                                                                                
 ▐▛███▜▌   Claude Code v2.1.7                                                   
▝▜█████▛▘  Opus 4.5 · Claude Max                                                
  ▘▘ ▝▝    ~/Documents/AI/mcp/lordabbett/mcp-defender                           
                                                                                
❯ /model                                                                        
  ⎿  Set model to Default (Opus 4.5 · Most capable for complex work)            
                                                                                
❯ /context                                                                      
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     Memory files · /memory                                                     
     └ CLAUDE.md: 596 tokens                                                    
                                                                                
                                                                                
                                                                                
                                                                                
❯ look at this and let me know how do we start testing this mcp?                
                                                                                
⏺ Let me explore the project structure to understand what's already set up.     
                                                                                
⏺ Search(pattern: "**/*")                                                       
  ⎿  Found 9 files (ctrl+o to expand)                                           
                                                                                
⏺ Read(pyproject.toml)                                                          
  ⎿  Read 48 lines                                                              
                                                                                
⏺ Here's how to start testing this MCP server:                                  
                                                                                
  1. Setup Environment                                                          
                                                                                
  # Create and activate virtual environment                                     
  python -m venv .venv                                                          
  source .venv/bin/activate                                                     
                                                                                
  # Install with dev dependencies                                               
  pip install -e ".[dev]"                                                       
                                                                                
  2. Run Unit Tests (No Azure credentials needed)                               
                                                                                
  # Run the existing tests                                                      
  pytest                                                                        
                                                                                
  # Or with verbose output                                                      
  pytest -v                                                                     
                                                                                
  The current tests in tests/test_server.py verify tool registration and schema 
  output without needing Azure credentials.                                     
                                                                                
  3. Integration Testing (Requires Azure setup)                                 
                                                                                
  For testing against real Microsoft Defender:                                  
                                                                                
  1. Create a .env file from the example:                                       
  cp .env.example .env                                                          
  2. Fill in Azure credentials - You need an Azure AD App Registration with:    
    - ThreatHunting.Read.All                                                    
    - SecurityIncident.Read.All                                                 
    - SecurityAlert.Read.All                                                    
  3. Run the server:                                                            
  mcp-defender                                                                  
                                                                                
  4. Test with an MCP Client                                                    
                                                                                
  Once running, you can connect to it using:                                    
  - Claude Desktop - Add to your MCP config                                     
  - MCP Inspector - npx @modelcontextprotocol/inspector                         
  - Custom client - Connect via stdio                                           
                                                                                
  Would you like me to help you set up the Azure App Registration, add more     
  comprehensive unit tests with mocking, or configure an MCP client to test     
  against the running server?                                                   
                                                                                
❯ also I am gonna use the certificate and not client id and secret              
                                                                                
⏺ Let me look at the current authentication implementation in the server.       
                                                                                
⏺ Read(src/mcp_defender/server.py)                                              
  ⎿  Read 355 lines                                                             
                                                                                
⏺ I see the current implementation uses ClientSecretCredential. I'll update it  
  to support certificate-based authentication using CertificateCredential from  
  azure-identity.                                                               
                                                                                
⏺ Update(src/mcp_defender/server.py)                                            
  ⎿  Added 1 line, removed 1 line                                               
       4   import os                                                            
       5   from typing import Any                                               
       6                                                                        
       7 -from azure.identity import ClientSecretCredential                     
       7 +from azure.identity import CertificateCredential,                     
         +ClientSecretCredential                                                
       8   from dotenv import load_dotenv                                       
       9   from mcp.server import Server                                        
      10   from mcp.server.stdio import stdio_server                            
                                                                                
⏺ Update(src/mcp_defender/server.py)                                            
  ⎿  Added 25 lines, removed 8 lines                                            
      30           tenant_id = os.environ.get("AZURE_TENANT_ID")                
      31           client_id = os.environ.get("AZURE_CLIENT_ID")                
      32           client_secret = os.environ.get("AZURE_CLIENT_SECRET")        
      33 +         certificate_path =                                           
         +os.environ.get("AZURE_CLIENT_CERTIFICATE_PATH")                       
      34 +         certificate_password =                                       
         +os.environ.get("AZURE_CLIENT_CERTIFICATE_PASSWORD")                   
      35                                                                        
      36 -         if not all([tenant_id, client_id, client_secret]):           
      36 +         if not tenant_id or not client_id:                           
      37               raise ValueError(                                        
      38 -                "Missing Azure credentials. Set AZURE_TENANT_ID       
         -, AZURE_CLIENT_ID, "                                                  
      39 -                "and AZURE_CLIENT_SECRET                              
         -environment variables."                                               
      38 +                "Missing Azure credentials. Set AZURE_TENANT_ID       
         + and AZURE_CLIENT_ID "                                                
      39 +                "environment variables."                              
      40               )                                                        
      41                                                                        
      42 -         credential = ClientSecretCredential(                         
      43 -             tenant_id=tenant_id,                                     
      44 -             client_id=client_id,                                     
      45 -             client_secret=client_secret,                             
      46 -         )                                                            
      42 +         # Use certificate if provided, otherwise fall back to        
         + client secret                                                        
      43 +         if certificate_path:                                         
      44 +             credential = CertificateCredential(                      
      45 +                 tenant_id=tenant_id,                                 
      46 +                 client_id=client_id,                                 
      47 +                 certificate_path=certificate_path,                   
      48 +                 password=certificate_password,  # Optional,          
         +for encrypted PFX/PEM                                                 
      49 +             )                                                        
      50 +         elif client_secret:                                          
      51 +             credential = ClientSecretCredential(                     
      52 +                 tenant_id=tenant_id,                                 
      53 +                 client_id=client_id,                                 
      54 +                 client_secret=client_secret,                         
      55 +             )                                                        
      56 +         else:                                                        
      57 +             raise ValueError(                                        
      58 +                 "Missing authentication method. Set either           
         +AZURE_CLIENT_CERTIFICATE_PATH "                                       
      59 +                 "or AZURE_CLIENT_SECRET environment                  
         +variable."                                                            
      60 +             )                                                        
      61 +                                                                      
      62           _graph_client = GraphServiceClient(                          
      63               credentials=credential,                                  
      64               scopes=["https://graph.microsoft.com/.default"],         
                                                                                
⏺ Now let me update the .env.example to include the certificate options.        
                                                                                
⏺ Update(.env.example)                                                          
  ⎿  Added 9 lines, removed 1 line                                              
       3                                                                        
       4   AZURE_TENANT_ID=your-tenant-id                                       
       5   AZURE_CLIENT_ID=your-client-id                                       
       6 - AZURE_CLIENT_SECRET=your-client-secret                               
       6                                                                        
       7 + # Authentication: Use EITHER certificate OR client secret            
         +(certificate preferred)                                               
       8 +                                                                      
       9 + # Option 1: Certificate authentication (recommended)                 
      10 + AZURE_CLIENT_CERTIFICATE_PATH=/path/to/certificate.pem               
      11 + # AZURE_CLIENT_CERTIFICATE_PASSWORD=optional-password-if-encr        
         +ypted                                                                 
      12 +                                                                      
      13 + # Option 2: Client secret authentication                             
      14 + # AZURE_CLIENT_SECRET=your-client-secret                             
      15 +                                                                      
      16   # Optional: Specify the Defender API endpoint (defaults to           
          commercial)                                                           
      17   # DEFENDER_API_ENDPOINT=https://api.security.microsoft.com           
                                                                                
⏺ Let me also update the CLAUDE.md to document this.                            
                                                                                
⏺ Read(CLAUDE.md)                                                               
  ⎿  Read 72 lines                                                              
                                                                                
⏺ Update(CLAUDE.md)                                                             
  ⎿  Added 6 lines, removed 3 lines                                             
      46   - Tool handlers are async functions that return                      
          `list[TextContent]`                                                   
      47                                                                        
      48   **Authentication flow:**                                             
      49 -1. Reads `AZURE_TENANT_ID`, `AZURE_CLIENT_ID`,                        
         -`AZURE_CLIENT_SECRET` from environment                                
      50 - 2. Uses `ClientSecretCredential` from azure-identity                 
      51 - 3. Creates `GraphServiceClient` with Microsoft Graph scope           
      49 +1. Reads `AZURE_TENANT_ID`, `AZURE_CLIENT_ID` from environment        
      50 + 2. Uses either:                                                      
      51 +    - `CertificateCredential` if                                      
         +`AZURE_CLIENT_CERTIFICATE_PATH` is set (recommended)                  
      52 +    - `ClientSecretCredential` if `AZURE_CLIENT_SECRET` is set        
         + (fallback)                                                           
      53 + 3. Optional: `AZURE_CLIENT_CERTIFICATE_PASSWORD` for                 
         +encrypted certificates                                                
      54 + 4. Creates `GraphServiceClient` with Microsoft Graph scope           
      55                                                                        
      56   **Adding new tools:**                                                
      57   1. Add `Tool` definition in `list_tools()` with name,                
          description, and JSON schema                                          
                                                                                
⏺ Let me run the tests and type check to make sure everything still works.      
                                                                                
⏺ Bash(source .venv/bin/activate && ruff check . 2>&1)                          
  ⎿  Error: Exit code 127                                                       
     (eval):source:1: no such file or directory: .venv/bin/activate             
                                                                                
⏺ The virtual environment doesn't exist yet. Let me set it up.                  
                                                                                
⏺ Bash(python -m venv .venv && source .venv/bin/activate && pip install -e      
      ".[dev]" 2>&1 | tail -20)                                                 
  ⎿  Downloading aiosignal-1.4.0-py3-none-any.whl (7.5 kB)                      
     Downloading frozenlist-1.8.0-cp312-cp312-macosx_11_0_arm64.whl (50 kB)     
     Using cached hpack-4.1.0-py3-none-any.whl (34 kB)                          
     … +57 lines (ctrl+o to expand)                                             
                                                                                
⏺ Bash(source .venv/bin/activate && ruff check . 2>&1)                          
  ⎿  Error: Exit code 1                                                         
     E501 Line too long (119 > 100)                                             
       --> src/mcp_defender/server.py:13:101                                    
        |                                                                       
     11 | from mcp.types import TextContent, Tool                               
     12 | from msgraph import GraphServiceClient                                
     13 | from msgraph.generated.security.microsoft_graph_security_run_hunting_q
     ery.run_hunting_query_post_request_body import (                           
        |                                                                       
                                  ^^^^^^^^^^^^^^^^^^^                           
     14 |     RunHuntingQueryPostRequestBody,                                   
     15 | )                                                                     
                                                                                
     … +14 lines (ctrl+o to see all)                                            
                                                                                
⏺ The tests show that the schema test passes (which validates my auth changes   
  don't break anything). The test_list_tools failure is a pre-existing issue    
  with how the test calls the MCP server API. The linting issues are also       
  pre-existing.                                                                 
                                                                                
  Let me run mypy to check the type annotations.                                
                                                                                
⏺ Bash(source .venv/bin/activate && mypy src 2>&1)                              
  ⎿  Error: Exit code 1                                                         
     src/mcp_defender/server.py:12: error: Module "msgraph" does not explicitly 
     export attribute "GraphServiceClient"  [attr-defined]                      
     src/mcp_defender/server.py:51: error: Incompatible types in assignment     
     (expression has type "ClientSecretCredential", variable has type           
     "CertificateCredential")  [assignment]                                     
     src/mcp_defender/server.py:69: error: Call to untyped function "list_tools"
     in typed context  [no-untyped-call]                                        
     src/mcp_defender/server.py:69: error: Untyped decorator makes function     
     "list_tools" untyped  [untyped-decorator]                                  
     src/mcp_defender/server.py:169: error: Untyped decorator makes function    
     "call_tool" untyped  [untyped-decorator]                                   
     Found 5 errors in 1 file (checked 2 source files)                          
                                                                                
                                                                                
⏺ That's a good architectural insight. MCP is best suited for interactive,      
  query-based operations where an AI assistant needs to dynamically investigate 
  - Advanced Hunting with KQL is perfect for that. Alerts and incidents are more
   like continuous data streams that belong in a pipeline (Kafka, Event Hub,    
  etc.).                                                                        
                                                                                
  So the refactored MCP would focus on:                                         
  - run_hunting_query - Execute KQL queries for investigations                  
  - get_hunting_schema - Discover available tables and columns                  
                                                                                
  And remove:                                                                   
  - list_incidents                                                              
  - get_incident                                                                
  - list_alerts                                                                 
                                                                                
  Would you like me to:                                                         
                                                                                
  1. Strip it down - Remove alerts/incidents, keep just the hunting tools       
  2. Enhance hunting - Add more hunting-focused tools like:                     
    - get_hunting_examples - Sample KQL queries for common investigations       
    - explain_hunting_result - Help interpret query results                     
    - Saved queries / query templates                                           
  3. Both - Clean up and enhance                                                
                                                                                
  Also, should I fix the mypy type error I introduced with the certificate auth 
  while we're at it?                                                            
                                                                                
⏺ That makes total sense. MCP is designed for interactive, on-demand operations 
  - perfect for Advanced Hunting where an AI assistant dynamically runs KQL     
  queries to investigate security events. Alerts and incidents are continuous   
  data feeds better suited for Kafka/Event Hub pipelines.                       
                                                                                
  Proposed new focus:                                                           
  ┌────────────────────┬────────────────┐                                       
  │        Keep        │     Remove     │                                       
  ├────────────────────┼────────────────┤                                       
  │ run_hunting_query  │ list_incidents │                                       
  ├────────────────────┼────────────────┤                                       
  │ get_hunting_schema │ get_incident   │                                       
  ├────────────────────┼────────────────┤                                       
  │                    │ list_alerts    │                                       
  └────────────────────┴────────────────┘                                       
  Before I strip it down, a few questions:                                      
                                                                                
⏺ User answered Claude's questions:                                             
  ⎿  · Should I add any additional hunting-focused tools beyond the basic       
     query and schema? → i want somethign where ai model shoudl be able to      
     create a kusto query and being able to run it via mcp and users shoudl     
     be able to query in natural lanuage to make investogation really really    
      fast and naturally using natural language... this would make things a     
     better usecase.. what you think? also have a schema helps as microsft      
     keeps adding more sources to the tables                                    
                                                                                
                                                                                
⏺ I think this is an excellent use case. Here's the architecture I envision:    
                                                                                
  ┌─────────────────────────────────────────────────────────┐                   
  │  User: "Show me any suspicious PowerShell activity     │                    
  │         from the last 24 hours"                        │                    
  └─────────────────────┬───────────────────────────────────┘                   
                        │                                                       
                        ▼                                                       
  ┌─────────────────────────────────────────────────────────┐                   
  │  AI (Claude)                                           │                    
  │  1. Calls get_hunting_schema to understand tables      │                    
  │  2. Translates natural language → KQL                  │                    
  │  3. Calls run_hunting_query with generated KQL         │                    
  │  4. Interprets results in plain English                │                    
  └─────────────────────┬───────────────────────────────────┘                   
                        │                                                       
                        ▼                                                       
  ┌─────────────────────────────────────────────────────────┐                   
  │  MCP Server (mcp-defender)                             │                    
  │  • get_hunting_schema - Provides table/column info     │                    
  │  • run_hunting_query  - Executes KQL against Defender  │                    
  └─────────────────────────────────────────────────────────┘                   
                                                                                
  The AI is the query builder - no need for a separate tool. The MCP just needs 
  to:                                                                           
  1. Expose schema - So the AI knows what tables/columns exist (and stays       
  current as Microsoft adds sources)                                            
  2. Execute queries - Run the KQL the AI generates                             
                                                                                
  This keeps the MCP simple and leverages the AI's natural language             
  understanding. Want me to:                                                    
                                                                                
  1. Strip out alerts/incidents                                                 
  2. Enhance get_hunting_schema to dynamically fetch real schema from Defender  
  (not just hardcoded tables)                                                   
  3. Clean up the code                                                          
                                                                                
  Sound good?                                                                   
                                                                                
✻ Worked for 4m 12s                                                             
                                                                                
❯ yes go for all 3                                                              
                                                                                
⏺ Write(src/mcp_defender/server.py)                                             
  ⎿  Added 86 lines, removed 236 lines                                          
      2                                                                         
      3   import asyncio                                                        
      4   import os                                                             
      5 -from typing import Any                                                 
      5 +from typing import Union                                               
      6                                                                         
      7   from azure.identity import CertificateCredential,                     
         ClientSecretCredential                                                 
      8   from dotenv import load_dotenv                                        
     ...                                                                        
      10   from mcp.server.stdio import stdio_server                            
      11   from mcp.types import TextContent, Tool                              
      12   from msgraph import GraphServiceClient                               
      13 -from msgraph.generated.security.microsoft_graph_security_run_hu       
         -nting_query.run_hunting_query_post_request_body import (              
      14 -     RunHuntingQueryPostRequestBody,                                  
      13 +from msgraph.generated.security.microsoft_graph_security_run_hu       
         +nting_query import (                                                  
      14 +     run_hunting_query_post_request_body as hunting_request,          
      15   )                                                                    
      16                                                                        
      17   load_dotenv()                                                        
      18                                                                        
      19 - # Initialize MCP server                                              
      19   server = Server("mcp-defender")                                      
      20                                                                        
      21 - # Microsoft Graph client (initialized lazily)                        
      21   _graph_client: GraphServiceClient | None = None                      
      22                                                                        
      23                                                                        
     ...                                                                        
      35                                                                        
      36           if not tenant_id or not client_id:                           
      37               raise ValueError(                                        
      38 -                "Missing Azure credentials.                           
         -Set AZURE_TENANT_ID and AZURE_CLIENT_ID "                             
      39 -                "environment variables."                              
      38 +                "Missing Azure credentials. "                         
      39 +                "Set AZURE_TENANT_ID and AZURE_CLIENT_ID              
         +environment variables."                                               
      40               )                                                        
      41                                                                        
      42 -         # Use certificate if provided, otherwise fall back to        
         - client secret                                                        
      42 +         credential: Union[CertificateCredential,                     
         +ClientSecretCredential]                                               
      43           if certificate_path:                                         
      44               credential = CertificateCredential(                      
      45                   tenant_id=tenant_id,                                 
      46                   client_id=client_id,                                 
      47                   certificate_path=certificate_path,                   
      48 -                password=certificate_password,                        
         -  # Optional, for encrypted PFX/PEM                                   
      48 +                password=certificate_password,                        
      49               )                                                        
      50           elif client_secret:                                          
      51               credential = ClientSecretCredential(                     
     ...                                                                        
      55               )                                                        
      56           else:                                                        
      57               raise ValueError(                                        
      58 -                "Missing authentication method.                       
         -Set either AZURE_CLIENT_CERTIFICATE_PATH "                            
      59 -                 "or AZURE_CLIENT_SECRET environment                  
         -variable."                                                            
      58 +                "Missing authentication method. "                     
      59 +                 "Set AZURE_CLIENT_CERTIFICATE_PATH or                
         +AZURE_CLIENT_SECRET."                                                 
      60               )                                                        
      61                                                                        
      62           _graph_client = GraphServiceClient(                          
     ...                                                                        
      68                                                                        
      69   @server.list_tools()                                                 
      70   async def list_tools() -> list[Tool]:                                
      71 -    """List available Defender tools."""                              
      71 +    """List available Defender Advanced Hunting tools."""             
      72       return [                                                         
      73           Tool(                                                        
      74               name="run_hunting_query",                                
      75               description=(                                            
      76                   "Execute a KQL (Kusto Query Language) query          
          against Microsoft Defender "                                          
      77 -                "Advanced Hunting. Use this to search across          
         -security data including "                                             
      78 -                 "DeviceEvents, DeviceProcessEvents,                  
         -EmailEvents, IdentityLogonEvents, etc."                               
      77 +                "Advanced Hunting. Use this to investigate            
         +security events across "                                              
      78 +                 "endpoints, email, identity, and cloud apps.         
         +Always call get_hunting_schema "                                      
      79 +                 "first to understand available tables and            
         +columns."                                                             
      80               ),                                                       
      81               inputSchema={                                            
      82                   "type": "object",                                    
      83                   "properties": {                                      
      84                       "query": {                                       
      85                           "type": "string",                            
      86 -                        "description": "The KQL query to              
         -execute. Example: DeviceEvents | take 10",                            
      86 +                        "description": "The KQL query to              
         +execute",                                                             
      87                       },                                               
      88                   },                                                   
      89                   "required": ["query"],                               
     ...                                                                        
       91           Tool(                                                       
       92               name="get_hunting_schema",                              
       93               description=(                                           
       94 -                "Get the Advanced Hunting schema including           
          - available tables and columns. "                                     
       95 -                "Use this to discover what data is available         
          - for querying."                                                      
       94 +                "Get the Advanced Hunting schema with                
          + available tables and columns. "                                     
       95 +                "Call this before writing queries to                 
          +understand what data is available. "                                 
       96 +                 "Returns table names, column names, and data        
          + types."                                                             
       97               ),                                                      
       98               inputSchema={                                           
       99                   "type": "object",                                   
      100                   "properties": {                                     
      101                       "table_name": {                                 
      102                           "type": "string",                           
      103 -                         "description": "Optional: specific          
          -table name to get schema for",                                       
      103 +                         "description": "Get detailed schema         
          +for a specific table",                                               
      104                       },                                              
      105                   },                                                  
      106                   "required": [],                                     
      107               },                                                      
      108           ),                                                          
      109 -         Tool(                                                       
      110 -             name="list_incidents",                                  
      111 -             description=(                                           
      112 -                 "List recent security incidents from                
          -Microsoft Defender. "                                                
      113 -                 "Returns incident details including                 
          -severity, status, and related alerts."                               
      114 -             ),                                                      
      115 -             inputSchema={                                           
      116 -                 "type": "object",                                   
      117 -                 "properties": {                                     
      118 -                     "top": {                                        
      119 -                         "type": "integer",                          
      120 -                         "description": "Number of incidents         
          -to return (default: 20, max: 100)",                                  
      121 -                         "default": 20,                              
      122 -                     },                                              
      123 -                     "filter": {                                     
      124 -                         "type": "string",                           
      125 -                         "description": "OData filter                
          -expression (e.g., \"severity eq 'high'\")",                          
      126 -                     },                                              
      127 -                 },                                                  
      128 -                 "required": [],                                     
      129 -             },                                                      
      130 -         ),                                                          
      131 -         Tool(                                                       
      132 -             name="get_incident",                                    
      133 -             description="Get detailed information about a           
          -specific incident by ID.",                                           
      134 -             inputSchema={                                           
      135 -                 "type": "object",                                   
      136 -                 "properties": {                                     
      137 -                     "incident_id": {                                
      138 -                         "type": "string",                           
      139 -                         "description": "The incident ID to          
          -retrieve",                                                           
      140 -                     },                                              
      141 -                 },                                                  
      142 -                 "required": ["incident_id"],                        
      143 -             },                                                      
      144 -         ),                                                          
      145 -         Tool(                                                       
      146 -             name="list_alerts",                                     
      147 -             description=(                                           
      148 -                 "List security alerts from Microsoft                
          -Defender. "                                                          
      149 -                 "Returns alert details including detection          
          -source and evidence."                                                
      150 -             ),                                                      
      151 -             inputSchema={                                           
      152 -                 "type": "object",                                   
      153 -                 "properties": {                                     
      154 -                     "top": {                                        
      155 -                         "type": "integer",                          
      156 -                         "description": "Number of alerts to         
          -return (default: 20, max: 100)",                                     
      157 -                         "default": 20,                              
      158 -                     },                                              
      159 -                     "filter": {                                     
      160 -                         "type": "string",                           
      161 -                         "description": "OData filter                
          -expression",                                                         
      162 -                     },                                              
      163 -                 },                                                  
      164 -                 "required": [],                                     
      165 -             },                                                      
      166 -         ),                                                          
      109       ]                                                               
      110                                                                       
      111                                                                       
      112   @server.call_tool()                                                 
      113 -async def call_tool(name: str, arguments: dict[str, Any]             
          -) -> list[TextContent]:                                              
      113 +async def call_tool(name: str, arguments: dict                       
          +) -> list[TextContent]:                                              
      114       """Handle tool calls."""                                        
      115 -     try:                                                            
      116 -         if name == "run_hunting_query":                             
      117 -             return await                                            
          -run_hunting_query(arguments["query"])                                
      118 -         elif name == "get_hunting_schema":                          
      119 -             return await                                            
          -get_hunting_schema(arguments.get("table_name"))                      
      120 -         elif name == "list_incidents":                              
      121 -             return await list_incidents(                            
      122 -                 top=arguments.get("top", 20),                       
      123 -                 filter_expr=arguments.get("filter"),                
      124 -             )                                                       
      125 -         elif name == "get_incident":                                
      126 -             return await                                            
          -get_incident(arguments["incident_id"])                               
      127 -         elif name == "list_alerts":                                 
      128 -             return await list_alerts(                               
      129 -                 top=arguments.get("top", 20),                       
      130 -                 filter_expr=arguments.get("filter"),                
      131 -             )                                                       
      132 -         else:                                                       
      133 -             return [TextContent(type="text", text=f"Unknown         
          -tool: {name}")]                                                      
      134 -     except Exception as e:                                          
      135 -         return [TextContent(type="text", text=f"Error:              
          -{e!s}")]                                                             
      115 +     if name == "run_hunting_query":                                 
      116 +         return await run_hunting_query(arguments["query"])          
      117 +     elif name == "get_hunting_schema":                              
      118 +         return await                                                
          +get_hunting_schema(arguments.get("table_name"))                      
      119 +     else:                                                           
      120 +         return [TextContent(type="text", text=f"Unknown             
          +tool: {name}")]                                                      
      121                                                                       
      122                                                                       
      123   async def run_hunting_query(query: str) ->                          
           list[TextContent]:                                                   
      124       """Execute an Advanced Hunting KQL query."""                    
      125 -     client = get_graph_client()                                     
      125 +     try:                                                            
      126 +         client = get_graph_client()                                 
      127 +         request_body =                                              
          +hunting_request.RunHuntingQueryPostRequestBody(query=query)          
      128 +         result = await client.security.microsoft_graph_secur        
          +ity_run_hunting_query.post(                                          
      129 +             request_body                                            
      130 +         )                                                           
      131                                                                       
      132 -     request_body =                                                  
          -RunHuntingQueryPostRequestBody(query=query)                          
      133 -     result = await client.security.microsoft_graph_security_        
          -run_hunting_query.post(request_body)                                 
      132 +         if result is None:                                          
      133 +             return [TextContent(type="text", text="No               
          +results returned from query")]                                       
      134                                                                       
      135 -     if result is None:                                              
      136 -         return [TextContent(type="text", text="No results           
          -returned from query")]                                               
      135 +         output_lines = []                                           
      136                                                                       
      137 -     # Format results as a table                                     
      138 -     output_lines = []                                               
      137 +         # Column headers                                            
      138 +         if result.schema:                                           
      139 +             headers = [col.name for col in result.schema if         
          +col.name]                                                            
      140 +             output_lines.append(" | ".join(headers))                
      141 +             output_lines.append("-" * 80)                           
      142                                                                       
      143 -     # Add column headers                                            
      144 -     if result.schema:                                               
      145 -         headers = [col.name for col in result.schema if             
          -col.name]                                                            
      146 -         output_lines.append(" | ".join(headers))                    
      147 -         output_lines.append("-" * 80)                               
      143 +         # Data rows                                                 
      144 +         if result.results:                                          
      145 +             for row in result.results:                              
      146 +                 if row.additional_data:                             
      147 +                     values = [str(v) for v in                       
          +row.additional_data.values()]                                        
      148 +                     output_lines.append(" | ".join(values))         
      149                                                                       
      150 -     # Add data rows                                                 
      151 -     if result.results:                                              
      152 -         for row in result.results:                                  
      153 -             if row.additional_data:                                 
      154 -                 values = [str(v) for v in                           
          -row.additional_data.values()]                                        
      155 -                 output_lines.append(" | ".join(values))             
      150 +         if not output_lines:                                        
      151 +             return [TextContent(type="text", text="Query            
          +returned no results")]                                               
      152                                                                       
      153 -     if not output_lines:                                            
      154 -         return [TextContent(type="text", text="Query                
          -returned no results")]                                               
      153 +         return [TextContent(type="text",                            
          +text="\n".join(output_lines))]                                       
      154                                                                       
      155 -     return [TextContent(type="text",                                
          -text="\n".join(output_lines))]                                       
      155 +     except Exception as e:                                          
      156 +         return [TextContent(type="text", text=f"Query error:        
          + {e}")]                                                              
      157                                                                       
      158                                                                       
      159   async def get_hunting_schema(table_name: str | None) ->             
           list[TextContent]:                                                   
      160 -    """Get Advanced Hunting schema information."""                   
      161 -     # Common Advanced Hunting tables with descriptions              
      162 -     schema_info = {                                                 
      163 -         "DeviceEvents": "Endpoint detection events including        
          - process, file, registry, network",                                  
      164 -         "DeviceProcessEvents": "Process creation and related        
          - events",                                                            
      165 -         "DeviceNetworkEvents": "Network connection events",         
      166 -         "DeviceFileEvents": "File creation, modification,           
          -and deletion events",                                                
      167 -         "DeviceRegistryEvents": "Registry key and value             
          -modifications",                                                      
      168 -         "DeviceLogonEvents": "Sign-in and authentication            
          -events on devices",                                                  
      169 -         "DeviceImageLoadEvents": "DLL loading events",              
      170 -         "DeviceInfo": "Device information including OS and          
          -configuration",                                                      
      171 -         "EmailEvents": "Email delivery and related events",         
      172 -         "EmailAttachmentInfo": "Information about email             
          -attachments",                                                        
      173 -         "EmailUrlInfo": "URLs contained in emails",                 
      174 -         "EmailPostDeliveryEvents": "Post-delivery actions on        
          - emails",                                                            
      175 -         "IdentityLogonEvents": "Authentication events from          
          -Active Directory",                                                   
      176 -         "IdentityQueryEvents": "Queries performed against           
          -Active Directory",                                                   
      177 -         "IdentityDirectoryEvents": "Directory object                
          -changes",                                                            
      178 -         "CloudAppEvents": "Events from connected cloud              
          -applications",                                                       
      179 -         "AlertInfo": "Alerts from Microsoft Defender",              
      180 -         "AlertEvidence": "Evidence associated with alerts",         
      181 -     }                                                               
      160 +    """Get Advanced Hunting schema                                   
          +- fetches dynamically from Defender."""                              
      161 +     try:                                                            
      162 +         client = get_graph_client()                                 
      163                                                                       
      164 -    if table_name:                                                   
      165 -         if table_name in schema_info:                               
      166 -             # Query for column information                          
      167 -             client = get_graph_client()                             
      164 +        if table_name:                                               
      165 +             # Get specific table schema                             
      166               query = f"{table_name} | getschema"                     
      167 -            request_body =                                           
          -RunHuntingQueryPostRequestBody(query=query)                          
      167 +            request_body = hunting_request.                          
          +RunHuntingQueryPostRequestBody(query=query)                          
      168 +             result = await client.security.microsoft_graph_s        
          +ecurity_run_hunting_query.post(                                      
      169 +                 request_body                                        
      170 +             )                                                       
      171                                                                       
      172 -             try:                                                    
      173 -                 result = await client.security.microsoft_gra        
          -ph_security_run_hunting_query.post(                                  
      174 -                     request_body                                    
      175 -                 )                                                   
      176 -                 if result and result.results:                       
      177 -                     output = [f"Schema for {table_name}:",          
          -f"Description: {schema_info[table_name]}", "", "Columns:"]           
      178 -                     for row in result.results:                      
      179 -                         if row.additional_data:                     
      180 -                             col_name =                              
          -row.additional_data.get("ColumnName", "")                            
      181 -                             col_type =                              
          -row.additional_data.get("ColumnType", "")                            
      182 -                             output.append(f"  - {col_name}:         
          -{col_type}")                                                         
      183 -                     return [TextContent(type="text",                
          -text="\n".join(output))]                                             
      184 -             except Exception as e:                                  
      185 -                 return [TextContent(type="text",                    
          -text=f"Error getting schema: {e}")]                                  
      172 +             if not result or not result.results:                    
      173 +                 return [TextContent(type="text",                    
          +text=f"Table '{table_name}' not found")]                             
      174                                                                       
      175 -             return [TextContent(type="text",                        
          -text=f"{table_name}: {schema_info[table_name]}")]                    
      176 -         else:                                                       
      177 -             return [TextContent(type="text", text=f"Unknown         
          -table: {table_name}")]                                               
      175 +             output = [f"Schema for {table_name}:", ""]              
      176 +             for row in result.results:                              
      177 +                 if row.additional_data:                             
      178 +                     col_name =                                      
          +row.additional_data.get("ColumnName", "")                            
      179 +                     col_type =                                      
          +row.additional_data.get("ColumnType", "")                            
      180 +                     output.append(f"  {col_name}:                   
          +{col_type}")                                                         
      181                                                                       
      182 -     # Return all tables                                             
      183 -     output = ["Available Advanced Hunting Tables:", ""]             
      184 -     for table, desc in schema_info.items():                         
      185 -         output.append(f"  {table}: {desc}")                         
      182 +             return [TextContent(type="text",                        
          +text="\n".join(output))]                                             
      183                                                                       
      184 -     return [TextContent(type="text",                                
          -text="\n".join(output))]                                             
      184 +         # List all available tables                                 
      185 +         query = "search * | distinct $table | sort by $table        
          + asc"                                                                
      186 +         request_body =                                              
          +hunting_request.RunHuntingQueryPostRequestBody(query=query)          
      187 +         result = await client.security.microsoft_graph_secur        
          +ity_run_hunting_query.post(                                          
      188 +             request_body                                            
      189 +         )                                                           
      190                                                                       
      191 +         if not result or not result.results:                        
      192 +             return [TextContent(type="text", text="Could not        
          + retrieve schema")]                                                  
      193                                                                       
      194 - async def list_incidents(top: int = 20, filter_expr: str |          
          -None = None) -> list[TextContent]:                                   
      195 -     """List security incidents."""                                  
      196 -     client = get_graph_client()                                     
      194 +         output = ["Available Advanced Hunting Tables:", ""]         
      195 +         for row in result.results:                                  
      196 +             if row.additional_data:                                 
      197 +                 table = row.additional_data.get("$table",           
          +"")                                                                  
      198 +                 if table:                                           
      199 +                     output.append(f"  {table}")                     
      200                                                                       
      201 -     top = min(top, 100)  # Cap at 100                               
      202 -                                                                     
      203 -     # Build request                                                 
      204 -     incidents = await client.security.incidents.get()               
      205 -                                                                     
      206 -     if incidents is None or incidents.value is None:                
      207 -         return [TextContent(type="text", text="No incidents         
          -found")]                                                             
      208 -                                                                     
      209 -     output = ["Recent Security Incidents:", ""]                     
      210 -     for incident in incidents.value[:top]:                          
      211 -         output.append(f"ID: {incident.id}")                         
      212 -         output.append(f"  Title: {incident.display_name}")          
      213 -         output.append(f"  Severity: {incident.severity}")           
      214 -         output.append(f"  Status: {incident.status}")               
      215 -         output.append(f"  Created:                                  
          -{incident.created_date_time}")                                       
      201           output.append("")                                           
      202 +         output.append("Use get_hunting_schema with                  
          +table_name to see columns.")                                         
      203                                                                       
      204 -    return [TextContent(type="text", text="\n".join(output))]        
      204 +                                                                     
          +return [TextContent(type="text", text="\n".join(output))]            
      205                                                                       
      206 +     except Exception as e:                                          
      207 +         return [TextContent(type="text", text=f"Schema              
          +error: {e}")]                                                        
      208                                                                       
      209 - async def get_incident(incident_id: str) ->                         
          -list[TextContent]:                                                   
      210 -     """Get detailed incident information."""                        
      211 -     client = get_graph_client()                                     
      209                                                                       
      210 -     incident = await                                                
          -client.security.incidents.by_incident_id(incident_id).get()          
      211 -                                                                     
      212 -     if incident is None:                                            
      213 -         return [TextContent(type="text", text=f"Incident            
          -{incident_id} not found")]                                           
      214 -                                                                     
      215 -     output = [                                                      
      216 -         f"Incident: {incident.id}",                                 
      217 -         f"Title: {incident.display_name}",                          
      218 -         f"Severity: {incident.severity}",                           
      219 -         f"Status: {incident.status}",                               
      220 -         f"Created: {incident.created_date_time}",                   
      221 -         f"Last Updated: {incident.last_update_date_time}",          
      222 -         f"Classification: {incident.classification}",               
      223 -         f"Determination: {incident.determination}",                 
      224 -         "",                                                         
      225 -         "Description:",                                             
      226 -         incident.description or "No description available",         
      227 -     ]                                                               
      228 -                                                                     
      229 -     return [TextContent(type="text",                                
          -text="\n".join(output))]                                             
      230 -                                                                     
      231 -                                                                     
      232 - async def list_alerts(top: int = 20, filter_expr: str | None        
          - = None) -> list[TextContent]:                                       
      233 -     """List security alerts."""                                     
      234 -     client = get_graph_client()                                     
      235 -                                                                     
      236 -     top = min(top, 100)                                             
      237 -                                                                     
      238 -     alerts = await client.security.alerts_v2.get()                  
      239 -                                                                     
      240 -     if alerts is None or alerts.value is None:                      
      241 -         return [TextContent(type="text", text="No alerts            
          -found")]                                                             
      242 -                                                                     
      243 -     output = ["Recent Security Alerts:", ""]                        
      244 -     for alert in alerts.value[:top]:                                
      245 -         output.append(f"ID: {alert.id}")                            
      246 -         output.append(f"  Title: {alert.title}")                    
      247 -         output.append(f"  Severity: {alert.severity}")              
      248 -         output.append(f"  Status: {alert.status}")                  
      249 -         output.append(f"  Created:                                  
          -{alert.created_date_time}")                                          
      250 -         output.append(f"  Detection Source:                         
          -{alert.detection_source}")                                           
      251 -         output.append("")                                           
      252 -                                                                     
      253 -     return [TextContent(type="text",                                
          -text="\n".join(output))]                                             
      254 -                                                                     
      255 -                                                                     
      210   def main() -> None:                                                 
      211       """Run the MCP server."""                                       
      212       asyncio.run(run_server())                                       
                                                                                
⏺ Write(tests/test_server.py)                                                   
  ⎿  Added 29 lines, removed 14 lines                                           
       1 -"""Tests for the MCP server."""                                       
       1 +"""Tests for the MCP Defender Advanced Hunting server."""             
       2                                                                        
       3   import pytest                                                        
       4                                                                        
       5 -from mcp_defender.server import server                                
       5 +from mcp_defender.server import list_tools                            
       6                                                                        
       7                                                                        
       8   @pytest.mark.asyncio                                                 
       9   async def test_list_tools():                                         
      10 -    """Test that tools are listed correctly."""                       
      11 -    tools = await server.list_tools()                                 
      10 +    """Test that only hunting tools are exposed."""                   
      11 +    tools = await list_tools()                                        
      12       tool_names = [t.name for t in tools]                             
      13                                                                        
      14 +     # Should only have hunting-focused tools                         
      15       assert "run_hunting_query" in tool_names                         
      16       assert "get_hunting_schema" in tool_names                        
      17 -     assert "list_incidents" in tool_names                            
      18 -     assert "get_incident" in tool_names                              
      19 -     assert "list_alerts" in tool_names                               
      17                                                                        
      18 +     # Should NOT have alerts/incidents (moved to streaming           
         +pipeline)                                                             
      19 +     assert "list_incidents" not in tool_names                        
      20 +     assert "get_incident" not in tool_names                          
      21 +     assert "list_alerts" not in tool_names                           
      22                                                                        
      23 +     # Should only be 2 tools                                         
      24 +     assert len(tools) == 2                                           
      25 +                                                                      
      26 +                                                                      
      27   @pytest.mark.asyncio                                                 
      28 - async def test_get_hunting_schema_returns_tables():                  
      29 -     """Test schema info for all tables."""                           
      30 -     from mcp_defender.server import get_hunting_schema               
      28 + async def test_run_hunting_query_tool_schema():                      
      29 +     """Test that run_hunting_query has correct input                 
         +schema."""                                                            
      30 +     tools = await list_tools()                                       
      31 +     query_tool = next(t for t in tools if t.name ==                  
         +"run_hunting_query")                                                  
      32                                                                        
      33 -     result = await get_hunting_schema(None)                          
      33 +     assert query_tool.inputSchema["required"] == ["query"]           
      34 +     assert "query" in query_tool.inputSchema["properties"]           
      35                                                                        
      36 -     assert len(result) == 1                                          
      37 -     assert "DeviceEvents" in result[0].text                          
      38 -     assert "EmailEvents" in result[0].text                           
      36 +                                                                      
      37 + @pytest.mark.asyncio                                                 
      38 + async def test_get_hunting_schema_tool_schema():                     
      39 +     """Test that get_hunting_schema has correct input                
         +schema."""                                                            
      40 +     tools = await list_tools()                                       
      41 +     schema_tool = next(t for t in tools if t.name ==                 
         +"get_hunting_schema")                                                 
      42 +                                                                      
      43 +     # table_name is optional                                         
      44 +     assert schema_tool.inputSchema["required"] == []                 
      45 +     assert "table_name" in                                           
         +schema_tool.inputSchema["properties"]                                 
                                                                                
⏺ Now let me update the documentation.                                          
                                                                                
⏺ Write(CLAUDE.md)                                                              
  ⎿  Added 16 lines, removed 20 lines                                           
       4                                                                        
       5   ## Project Overview                                                  
       6                                                                        
       7 -MCP server for Microsoft Defender Advanced Hunting. Enables AI        
         -assistants to execute KQL queries, investigate incidents, and         
         -analyze security alerts via the Model Context Protocol.               
       7 +MCP server for Microsoft Defender Advanced Hunting. Enables AI        
         +assistants to execute KQL queries and investigate security            
         +events via natural language through the Model Context Protocol.       
       8                                                                        
       9 + **Use case**: Users ask questions in natural language → AI           
         +translates to KQL → MCP executes against Defender → AI                
         +interprets results.                                                   
      10 +                                                                      
      11   ## Commands                                                          
      12                                                                        
      13   ```bash                                                              
     ...                                                                        
      35                                                                        
      36   ```                                                                  
      37   src/mcp_defender/                                                    
      38 -  server.py      # Main MCP server - all tools defined here           
      38 +  server.py      # Main MCP server - hunting tools only               
      39   ```                                                                  
      40                                                                        
      41 + **Tools exposed:**                                                   
      42 + - `run_hunting_query` - Execute KQL queries against Defender         
         +Advanced Hunting                                                      
      43 + - `get_hunting_schema` - Dynamically fetch available tables          
         +and columns                                                           
      44 +                                                                      
      45   **Key components in server.py:**                                     
      46   - `server` - MCP Server instance                                     
      47 -- `get_graph_client()` - Lazy-initialized Microsoft Graph             
         -client with Azure AD auth                                             
      48 - - `@server.list_tools()` - Declares available tools                  
         -(run_hunting_query, get_hunting_schema, list_incidents,               
         -get_incident, list_alerts)                                            
      49 -- `@server.call_tool()` - Routes tool calls to                        
         -handler functions                                                     
      50 - - Tool handlers are async functions that return                      
         -`list[TextContent]`                                                   
      47 +- `get_graph_client()` - Lazy-initialized Microsoft Graph             
         +client                                                                
      48 + - `list_tools()` - Declares the two hunting tools                    
      49 +- `call_tool()` - Routes tool calls to handlers                       
      50 + - `run_hunting_query()` - Executes KQL and formats results           
      51 + - `get_hunting_schema()` - Fetches schema dynamically from           
         +Defender                                                              
      52                                                                        
      53 -**Authentication flow:**                                              
      53 +**Authentication:**                                                   
      54   1. Reads `AZURE_TENANT_ID`, `AZURE_CLIENT_ID` from                   
          environment                                                           
      55   2. Uses either:                                                      
      56      - `CertificateCredential` if                                      
          `AZURE_CLIENT_CERTIFICATE_PATH` is set (recommended)                  
      57      - `ClientSecretCredential` if `AZURE_CLIENT_SECRET` is set        
           (fallback)                                                           
      58   3. Optional: `AZURE_CLIENT_CERTIFICATE_PASSWORD` for                 
          encrypted certificates                                                
      59 - 4. Creates `GraphServiceClient` with Microsoft Graph scope           
      59                                                                        
      60 - **Adding new tools:**                                                
      61 - 1. Add `Tool` definition in `list_tools()` with name,                
         -description, and JSON schema                                          
      62 - 2. Add routing case in `call_tool()`                                 
      63 - 3. Implement async handler function returning                        
         -`list[TextContent]`                                                   
      64 -                                                                      
      60   ## Microsoft Graph API                                               
      61                                                                        
      62   - Advanced Hunting: `client.security.microsoft_graph_security        
          _run_hunting_query.post()`                                            
      63 - - Incidents: `client.security.incidents.get()`                       
      64 - - Alerts: `client.security.alerts_v2.get()`                          
      63 + - Schema discovery: Uses KQL `getschema` and `search * |             
         +distinct $table`                                                      
      64                                                                        
      65 - KQL queries go through                                               
         -`RunHuntingQueryPostRequestBody(query=...)`.                          
      66 -                                                                      
      65   ## Required API Permissions                                          
      66                                                                        
      67 -App registration needs these Microsoft Graph permissions              
         - (Application type):                                                  
      67 +App registration needs this Microsoft Graph permission                
         + (Application type):                                                  
      68   - `ThreatHunting.Read.All`                                           
      69 - - `SecurityIncident.Read.All`                                        
      70 - - `SecurityAlert.Read.All`                                           
                                                                                
⏺ Bash(source .venv/bin/activate && mypy src 2>&1)                              
  ⎿  Error: Exit code 1                                                         
     src/mcp_defender/server.py:12: error: Module "msgraph" does not explicitly 
     export attribute "GraphServiceClient"  [attr-defined]                      
     src/mcp_defender/server.py:67: error: Call to untyped function "list_tools"
     in typed context  [no-untyped-call]                                        
     src/mcp_defender/server.py:67: error: Untyped decorator makes function     
     "list_tools" untyped  [untyped-decorator]                                  
     src/mcp_defender/server.py:111: error: Untyped decorator makes function    
     "call_tool" untyped  [untyped-decorator]                                   
     src/mcp_defender/server.py:112: error: Missing type parameters for generic 
     type "dict"  [type-arg]                                                    
     Found 5 errors in 1 file (checked 2 source files)                          
                                                                                
                                                                                
⏺ Tests pass. Let me fix the linting issue.                                     
                                                                                
⏺ Bash(source .venv/bin/activate && ruff check --fix . 2>&1)                    
  ⎿  Found 2 errors (2 fixed, 0 remaining).                                     
                                                                                
⏺ Read(src/mcp_defender/server.py)                                              
  ⎿  Read 221 lines                                                             
                                                                                
⏺ Update(src/mcp_defender/server.py)                                            
  ⎿  Added 1 line, removed 1 line                                               
       8   from mcp.server import Server                                        
       9   from mcp.server.stdio import stdio_server                            
      10   from mcp.types import TextContent, Tool                              
      11 -from msgraph import GraphServiceClient                                
      11 +from msgraph import GraphServiceClient                                
         +  # type: ignore[attr-defined]                                        
      12   from msgraph.generated.security.microsoft_graph_security_run_        
          hunting_query import (                                                
      13       run_hunting_query_post_request_body as hunting_request,          
      14   )                                                                    
                                                                                
⏺ Update(src/mcp_defender/server.py)                                            
  ⎿  Added 1 line                                                               
      2                                                                         
      3   import asyncio                                                        
      4   import os                                                             
      5 + from typing import Any                                                
      6                                                                         
      7   from azure.identity import CertificateCredential,                     
         ClientSecretCredential                                                 
      8   from dotenv import load_dotenv                                        
                                                                                
⏺ Update(src/mcp_defender/server.py)                                            
  ⎿  Added 1 line, removed 1 line                                               
      64       return _graph_client                                             
      65                                                                        
      66                                                                        
      67 -@server.list_tools()                                                  
      67 +@server.list_tools()  # type: ignore[misc]                            
      68   async def list_tools() -> list[Tool]:                                
      69       """List available Defender Advanced Hunting tools."""            
      70       return [                                                         
                                                                                
⏺ Update(src/mcp_defender/server.py)                                            
  ⎿  Added 2 lines, removed 2 lines                                             
      108       ]                                                               
      109                                                                       
      110                                                                       
      111 -@server.call_tool()                                                  
      112 -async def call_tool(name: str, arguments: dict                       
          -) -> list[TextContent]:                                              
      111 +@server.call_tool()  # type: ignore[misc]                            
      112 +async def call_tool(name: str, arguments: dict[str, Any]             
          +) -> list[TextContent]:                                              
      113       """Handle tool calls."""                                        
      114       if name == "run_hunting_query":                                 
      115           return await run_hunting_query(arguments["query"])          
                                                                                
⏺ Bash(source .venv/bin/activate && pytest -v && ruff check . && mypy src 2>&1) 
  ⎿  Error: Exit code 1                                                         
     ============================= test session starts                          
     ==============================                                             
     platform darwin -- Python 3.12.9, pytest-9.0.2, pluggy-1.6.0 -- /Users/tric
     yfalcon/Documents/AI/mcp/lordabbett/mcp-defender/.venv/bin/python          
     cachedir: .pytest_cache                                                    
     rootdir: /Users/trickyfalcon/Documents/AI/mcp/lordabbett/mcp-defender      
     configfile: pyproject.toml                                                 
     testpaths: tests                                                           
     plugins: anyio-4.12.1, asyncio-1.3.0                                       
     asyncio: mode=Mode.AUTO, debug=False,                                      
     asyncio_default_fixture_loop_scope=None,                                   
     asyncio_default_test_loop_scope=function                                   
     collecting ... collected 3 items                                           
     … +16 lines (ctrl+o to see all)                                            
                                                                                
⏺ Update(src/mcp_defender/server.py)                                            
  ⎿  Added 1 line, removed 1 line                                               
      64       return _graph_client                                             
      65                                                                        
      66                                                                        
      67 -@server.list_tools()  # type: ignore[misc]                            
      67 +@server.list_tools()  # type: ignore[                                 
         +no-untyped-call,untyped-decorator]                                    
      68   async def list_tools() -> list[Tool]:                                
      69       """List available Defender Advanced Hunting tools."""            
      70       return [                                                         
                                                                                
⏺ Update(src/mcp_defender/server.py)                                            
  ⎿  Added 1 line, removed 1 line                                               
      108       ]                                                               
      109                                                                       
      110                                                                       
      111 -@server.call_tool()  # type: ignore[misc]                            
      111 +@server.call_tool()  # type: ignore[untyped-decorator]               
      112   async def call_tool(name: str, arguments: dict[str, Any]) ->        
            list[TextContent]:                                                  
      113       """Handle tool calls."""                                        
      114       if name == "run_hunting_query":                                 
                                                                                
⏺ Bash(source .venv/bin/activate && pytest -v && ruff check . && mypy src 2>&1) 
  ⎿ ============================= test session starts =====================     
    =========                                                                   
    platform darwin -- Python 3.12.9, pytest-9.0.2, pluggy-1.6.0 -- /Users/     
    … +21 lines (ctrl+o to expand)                                              
                                                                                
                                                                                
                                                                                
⏺ All done. Here's the summary:                                                 
                                                                                
  Changes Made                                                                  
                                                                                
  1. Removed alerts/incidents tools                                             
  - Deleted list_incidents, get_incident, list_alerts                           
  - Now only exposes run_hunting_query and get_hunting_schema                   
                                                                                
  2. Enhanced schema fetching                                                   
  - get_hunting_schema() now fetches dynamically from Defender API              
  - Without table name: runs search * | distinct $table to list all available   
  tables                                                                        
  - With table name: runs {table} | getschema to get columns and types          
                                                                                
  3. Certificate authentication                                                 
  - Added support for AZURE_CLIENT_CERTIFICATE_PATH                             
  - Optional AZURE_CLIENT_CERTIFICATE_PASSWORD for encrypted certs              
  - Falls back to client secret if no certificate provided                      
                                                                                
  4. Cleaned up                                                                 
  - Simplified code from 355 lines → 222 lines                                  
  - All tests pass, linting clean, types check                                  
                                                                                
  To test with your certificate                                                 
                                                                                
  # Create .env file                                                            
  cat > .env << 'EOF'                                                           
  AZURE_TENANT_ID=your-tenant-id                                                
  AZURE_CLIENT_ID=your-client-id                                                
  AZURE_CLIENT_CERTIFICATE_PATH=/path/to/your/cert.pem                          
  EOF                                                                           
                                                                                
  # Run the server                                                              
  source .venv/bin/activate                                                     
  mcp-defender                                                                  
                                                                                
  The MCP only needs ThreatHunting.Read.All permission now. Ready to connect to 
  Claude Desktop or test with MCP Inspector.                                    
                                                                                
✻ Sautéed for 2m 45s                                                            
                                                                                
❯ I already have an app registration with all these permissions                 
                                                                                
  API / Permissions name                                                        
  Type                                                                          
  Description                                                                   
  Admin consent required                                                        
  Status                                                                        
  Microsoft Cloud App Security (3)                                              
  discovery.read                                                                
  Application                                                                   
  discovery.read                                                                
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  investigation.read                                                            
  Application                                                                   
  investigation.read                                                            
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  settings.read                                                                 
  Application                                                                   
  settings.read                                                                 
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  Microsoft Graph (1)                                                           
  User.Read                                                                     
  Delegated                                                                     
  Sign in and read user profile                                                 
  No                                                                            
  Granted for Lord Abbett & Co. LLC                                             
  MicrosoftEndpointDLP (1)                                                      
  Device.Read                                                                   
  Application                                                                   
  Read device profiles                                                          
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  WindowsDefenderATP (27)                                                       
  AdvancedQuery.Read.All                                                        
  Application                                                                   
  Run advanced queries                                                          
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  Alert.Read.All                                                                
  Application                                                                   
  Read all alerts                                                               
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  Alert.ReadWrite.All                                                           
  Application                                                                   
  Read and write all alerts                                                     
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  Event.Write                                                                   
  Application                                                                   
  Write timeline events                                                         
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  File.Read.All                                                                 
  Application                                                                   
  Read file profiles                                                            
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  IntegrationConfiguration.ReadWrite                                            
  Application                                                                   
  Read and Write Integration settings                                           
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  Ip.Read.All                                                                   
  Application                                                                   
  Read IP address profiles                                                      
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  Library.Manage                                                                
  Application                                                                   
  Manage live response library files                                            
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  Machine.CollectForensics                                                      
  Application                                                                   
  Collect forensics                                                             
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  Machine.Isolate                                                               
  Application                                                                   
  Isolate machine                                                               
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  Machine.LiveResponse                                                          
  Application                                                                   
  Run live response on a specific machine                                       
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  Machine.Read.All                                                              
  Application                                                                   
  Read all machine profiles                                                     
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  Machine.ReadWrite.All                                                         
  Application                                                                   
  Read and write all machine information                                        
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  Machine.RestrictExecution                                                     
  Application                                                                   
  Restrict code execution                                                       
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  Machine.Scan                                                                  
  Application                                                                   
  Scan machine                                                                  
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  Machine.StopAndQuarantine                                                     
  Application                                                                   
  Stop and quarantine file                                                      
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  RemediationTasks.Read.All                                                     
  Application                                                                   
  Read all remediation tasks                                                    
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  Score.Read.All                                                                
  Application                                                                   
  Read Threat and Vulnerability Management score                                
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  SecurityBaselinesAssessment.Read.All                                          
  Application                                                                   
  Read all security baselines assessment information                            
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  SecurityConfiguration.Read.All                                                
  Application                                                                   
  Read all security configurations                                              
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  SecurityConfiguration.ReadWrite.All                                           
  Application                                                                   
  Read and write all security configurations                                    
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  SecurityRecommendation.Read.All                                               
  Application                                                                   
  Read Threat and Vulnerability Management security recommendations             
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  Software.Read.All                                                             
  Application                                                                   
  Read Threat and Vulnerability Management software information                 
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  Ti.Read.All                                                                   
  Application                                                                   
  Read all IOCs                                                                 
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  Url.Read.All                                                                  
  Application                                                                   
  Read URL profiles                                                             
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  User.Read.All                                                                 
  Application                                                                   
  Read user profiles                                                            
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
  Vulnerability.Read.All                                                        
  Application                                                                   
  Read Threat and Vulnerability Management vulnerability information            
  Yes                                                                           
  Granted for Lord Abbett & Co. LLC                                             
                                                                                
⏺ I see you have AdvancedQuery.Read.All on WindowsDefenderATP - but our code    
  currently uses Microsoft Graph API which requires a different permission      
  (ThreatHunting.Read.All).                                                     
                                                                                
  These are two different APIs:                                                 
  API: Microsoft Graph                                                          
  Endpoint: graph.microsoft.com                                                 
  Permission You Have: ❌ Missing ThreatHunting.Read.All                        
  ────────────────────────────────────────                                      
  API: WindowsDefenderATP                                                       
  Endpoint: api.securitycenter.microsoft.com                                    
  Permission You Have: ✅ AdvancedQuery.Read.All                                
  You have two options:                                                         
                                                                                
⏺ User answered Claude's questions:                                             
  ⎿  · Which API should the MCP server use for Advanced Hunting? → which one    
      is better? graph or windows defender atp? adn which one is fast?          
                                                                                
⏺ WindowsDefenderATP API is better for your use case:                           
  Factor: Speed                                                                 
  WindowsDefenderATP: Faster - direct connection                                
  Microsoft Graph: Slower - abstraction layer                                   
  ────────────────────────────────────────                                      
  Factor: Purpose                                                               
  WindowsDefenderATP: Built for security ops & SOC                              
  Microsoft Graph: General-purpose unified API                                  
  ────────────────────────────────────────                                      
  Factor: Features                                                              
  WindowsDefenderATP: More Defender-specific endpoints                          
  Microsoft Graph: Broader but less specialized                                 
  ────────────────────────────────────────                                      
  Factor: Your setup                                                            
  WindowsDefenderATP: ✅ Already have permissions                               
  Microsoft Graph: Need to add permissions                                      
  Recommendation: Use WindowsDefenderATP API. It's purpose-built for security   
  investigations, has lower latency since it's direct to Defender, and you      
  already have the permissions configured.                                      
                                                                                
  Let me refactor the code to use the WindowsDefenderATP API instead of         
  Microsoft Graph.                                                              
                                                                                
⏺ Write(src/mcp_defender/server.py)                                             
  ⎿  Added 83 lines, removed 58 lines                                           
       1 -"""MCP server for Microsoft Defender Advanced Hunting."""             
       1 +"""MCP server for Microsoft Defender Advanced Hunting.                
       2                                                                        
       3 + Uses WindowsDefenderATP API                                          
         +(api.securitycenter.microsoft.com) for direct,                        
       4 + fast access to Advanced Hunting queries.                             
       5 + """                                                                  
       6 +                                                                      
       7   import asyncio                                                       
       8   import os                                                            
       9   from typing import Any                                               
      10                                                                        
      11 + import httpx                                                         
      12   from azure.identity import CertificateCredential,                    
          ClientSecretCredential                                                
      13   from dotenv import load_dotenv                                       
      14   from mcp.server import Server                                        
      15   from mcp.server.stdio import stdio_server                            
      16   from mcp.types import TextContent, Tool                              
      17 - from msgraph import GraphServiceClient  # type:                      
         -ignore[attr-defined]                                                  
      18 - from msgraph.generated.security.microsoft_graph_security_run_        
         -hunting_query import (                                                
      19 -     run_hunting_query_post_request_body as hunting_request,          
      20 - )                                                                    
      17                                                                        
      18   load_dotenv()                                                        
      19                                                                        
      20   server = Server("mcp-defender")                                      
      21                                                                        
      22 - _graph_client: GraphServiceClient | None = None                      
      22 + # Defender API endpoint                                              
      23 + DEFENDER_API_BASE =                                                  
         +"https://api.securitycenter.microsoft.com"                            
      24 + DEFENDER_SCOPE =                                                     
         +"https://api.securitycenter.microsoft.com/.default"                   
      25                                                                        
      26 + _credential: CertificateCredential | ClientSecretCredential |        
         + None = None                                                          
      27                                                                        
      28 - def get_graph_client() -> GraphServiceClient:                        
      29 -     """Get or create the Microsoft Graph client."""                  
      30 -     global _graph_client                                             
      31 -     if _graph_client is None:                                        
      28 +                                                                      
      29 + def get_credential() -> CertificateCredential |                      
         +ClientSecretCredential:                                               
      30 +     """Get or create Azure credential."""                            
      31 +     global _credential                                               
      32 +     if _credential is None:                                          
      33           tenant_id = os.environ.get("AZURE_TENANT_ID")                
      34           client_id = os.environ.get("AZURE_CLIENT_ID")                
      35           client_secret = os.environ.get("AZURE_CLIENT_SECRET")        
     ...                                                                        
      37                   "Set AZURE_TENANT_ID and AZURE_CLIENT_ID             
          environment variables."                                               
      38               )                                                        
      39                                                                        
      40 -         credential: CertificateCredential |                          
         -ClientSecretCredential                                                
      40           if certificate_path:                                         
      41 -            credential = CertificateCredential(                       
      41 +            _credential = CertificateCredential(                      
      42                   tenant_id=tenant_id,                                 
      43                   client_id=client_id,                                 
      44                   certificate_path=certificate_path,                   
      45                   password=certificate_password,                       
      46               )                                                        
      47           elif client_secret:                                          
      48 -            credential = ClientSecretCredential(                      
      48 +            _credential = ClientSecretCredential(                     
      49                   tenant_id=tenant_id,                                 
      50                   client_id=client_id,                                 
      51                   client_secret=client_secret,                         
     ...                                                                        
      57                   "Set AZURE_CLIENT_CERTIFICATE_PATH or                
          AZURE_CLIENT_SECRET."                                                 
      58               )                                                        
      59                                                                        
      60 -         _graph_client = GraphServiceClient(                          
      61 -             credentials=credential,                                  
      62 -             scopes=["https://graph.microsoft.com/.default"],         
      63 -         )                                                            
      64 -     return _graph_client                                             
      60 +     return _credential                                               
      61                                                                        
      62                                                                        
      63 + async def get_access_token() -> str:                                 
      64 +     """Get access token for Defender API."""                         
      65 +     credential = get_credential()                                    
      66 +     token = credential.get_token(DEFENDER_SCOPE)                     
      67 +     return token.token                                               
      68 +                                                                      
      69 +                                                                      
      70   @server.list_tools()  # type:                                        
          ignore[no-untyped-call,untyped-decorator]                             
      71   async def list_tools() -> list[Tool]:                                
      72       """List available Defender Advanced Hunting tools."""            
     ...                                                                        
      119           return [TextContent(type="text", text=f"Unknown             
           tool: {name}")]                                                      
      120                                                                       
      121                                                                       
      122 + async def run_defender_query(query: str) -> dict[str, Any]:         
      123 +     """Execute a query against Defender Advanced Hunting            
          +API."""                                                              
      124 +     token = await get_access_token()                                
      125 +                                                                     
      126 +     async with httpx.AsyncClient() as client:                       
      127 +         response = await client.post(                               
      128 +             f"{DEFENDER_API_BASE}/api/advancedqueries/run",         
      129 +             headers={                                               
      130 +                 "Authorization": f"Bearer {token}",                 
      131 +                 "Content-Type": "application/json",                 
      132 +             },                                                      
      133 +             json={"Query": query},                                  
      134 +             timeout=120.0,                                          
      135 +         )                                                           
      136 +         response.raise_for_status()                                 
      137 +         return response.json()                                      
      138 +                                                                     
      139 +                                                                     
      140   async def run_hunting_query(query: str) ->                          
           list[TextContent]:                                                   
      141       """Execute an Advanced Hunting KQL query."""                    
      142       try:                                                            
      143 -         client = get_graph_client()                                 
      144 -         request_body =                                              
          -hunting_request.RunHuntingQueryPostRequestBody(query=query)          
      145 -         result = await client.security.microsoft_graph_secur        
          -ity_run_hunting_query.post(                                          
      146 -             request_body                                            
      147 -         )                                                           
      143 +         result = await run_defender_query(query)                    
      144                                                                       
      145 -         if result is None:                                          
      146 -             return [TextContent(type="text", text="No               
          -results returned from query")]                                       
      147 -                                                                     
      145 +         # Format results                                            
      146           output_lines = []                                           
      147                                                                       
      148 -         # Column headers                                            
      149 -         if result.schema:                                           
      150 -             headers = [col.name for col in result.schema if         
          -col.name]                                                            
      148 +         # Get schema (column info)                                  
      149 +         schema = result.get("Schema", [])                           
      150 +         if schema:                                                  
      151 +             headers = [col.get("Name", "") for col in               
          +schema]                                                              
      152               output_lines.append(" | ".join(headers))                
      153               output_lines.append("-" * 80)                           
      154                                                                       
      155 -         # Data rows                                                 
      156 -         if result.results:                                          
      157 -             for row in result.results:                              
      158 -                 if row.additional_data:                             
      159 -                     values = [str(v) for v in                       
          -row.additional_data.values()]                                        
      160 -                     output_lines.append(" | ".join(values))         
      155 +         # Get results                                               
      156 +         results = result.get("Results", [])                         
      157 +         for row in results:                                         
      158 +             values = [str(row.get(col.get("Name", ""), ""))         
          +for col in schema]                                                   
      159 +             output_lines.append(" | ".join(values))                 
      160                                                                       
      161           if not output_lines:                                        
      162               return [TextContent(type="text", text="Query            
           returned no results")]                                               
      163                                                                       
      164 +         # Add stats                                                 
      165 +         stats = result.get("Stats", {})                             
      166 +         if stats:                                                   
      167 +             output_lines.append("")                                 
      168 +             output_lines.append(f"--- Query Stats ---")             
      169 +             output_lines.append(f"Execution time:                   
          +{stats.get('ExecutionTime', 'N/A')}")                                
      170 +             output_lines.append(f"Rows returned:                    
          +{len(results)}")                                                     
      171 +                                                                     
      172           return [TextContent(type="text",                            
           text="\n".join(output_lines))]                                       
      173                                                                       
      174 +     except httpx.HTTPStatusError as e:                              
      175 +         error_detail = e.response.text if e.response else           
          +str(e)                                                               
      176 +         return [TextContent(type="text", text=f"Query error:        
          + {error_detail}")]                                                   
      177       except Exception as e:                                          
      178           return [TextContent(type="text", text=f"Query error:        
            {e}")]                                                              
      179                                                                       
     ...                                                                        
      158   async def get_hunting_schema(table_name: str | None) ->             
           list[TextContent]:                                                   
      159       """Get Advanced Hunting schema - fetches dynamically            
           from Defender."""                                                    
      160       try:                                                            
      161 -         client = get_graph_client()                                 
      162 -                                                                     
      161           if table_name:                                              
      162               # Get specific table schema                             
      163 -            query = f"{table_name} | getschema"                      
      164 -             request_body =                                          
          -hunting_request.RunHuntingQueryPostRequestBody(query=query)          
      165 -             result = await client.security.microsoft_graph_s        
          -ecurity_run_hunting_query.post(                                      
      166 -                 request_body                                        
      167 -             )                                                       
      163 +            result = await run_defender_query(                       
          +f"{table_name} | getschema")                                         
      164                                                                       
      165 -             if not result or not result.results:                    
      165 +             schema_results = result.get("Results", [])              
      166 +             if not schema_results:                                  
      167                   return [TextContent(type="text",                    
           text=f"Table '{table_name}' not found")]                             
      168                                                                       
      169               output = [f"Schema for {table_name}:", ""]              
      170 -            for row in result.results:                               
      171 -                 if row.additional_data:                             
      172 -                     col_name =                                      
          -row.additional_data.get("ColumnName", "")                            
      173 -                     col_type =                                      
          -row.additional_data.get("ColumnType", "")                            
      174 -                     output.append(f"  {col_name}:                   
          -{col_type}")                                                         
      170 +            for row in schema_results:                               
      171 +                 col_name = row.get("ColumnName", "")                
      172 +                 col_type = row.get("ColumnType", "")                
      173 +                 output.append(f"  {col_name}: {col_type}")          
      174                                                                       
      175               return [TextContent(type="text",                        
           text="\n".join(output))]                                             
      176                                                                       
      177           # List all available tables                                 
      178 -         query = "search * | distinct $table | sort by $table        
          - asc"                                                                
      179 -         request_body =                                              
          -hunting_request.RunHuntingQueryPostRequestBody(query=query)          
      180 -         result = await client.security.microsoft_graph_secur        
          -ity_run_hunting_query.post(                                          
      181 -             request_body                                            
      178 +         result = await run_defender_query(                          
      179 +             "search * | distinct $table | sort by $table            
          +asc"                                                                 
      180           )                                                           
      181                                                                       
      182 -         if not result or not result.results:                        
      182 +         tables = result.get("Results", [])                          
      183 +         if not tables:                                              
      184               return [TextContent(type="text", text="Could not        
            retrieve schema")]                                                  
      185                                                                       
      186           output = ["Available Advanced Hunting Tables:", ""]         
      187 -        for row in result.results:                                   
      188 -             if row.additional_data:                                 
      189 -                 table = row.additional_data.get("$table",           
          -"")                                                                  
      190 -                if table:                                            
      191 -                     output.append(f"  {table}")                     
      187 +        for row in tables:                                           
      188 +             table = row.get("$table", "")                           
      189 +             if table:                                               
      190 +                output.append(f"  {table}")                          
      191                                                                       
      192           output.append("")                                           
      193           output.append("Use get_hunting_schema with                  
           table_name to see columns.")                                         
      194                                                                       
      195           return [TextContent(type="text",                            
           text="\n".join(output))]                                             
      196                                                                       
      197 +     except httpx.HTTPStatusError as e:                              
      198 +         error_detail = e.response.text if e.response else           
          +str(e)                                                               
      199 +         return [TextContent(type="text", text=f"Schema              
          +error: {error_detail}")]                                             
      200       except Exception as e:                                          
      201           return [TextContent(type="text", text=f"Schema              
           error: {e}")]                                                        
      202                                                                       
                                                                                
⏺ Read(pyproject.toml)                                                          
  ⎿  Read 48 lines                                                              
                                                                                
⏺ Update(pyproject.toml)                                                        
  ⎿  Removed 2 lines                                                            
       7   dependencies = [                                                     
       8       "mcp>=1.0.0",                                                    
       9       "azure-identity>=1.15.0",                                        
      10 -     "msgraph-sdk>=1.2.0",                                            
      10       "httpx>=0.27.0",                                                 
      11 -     "pydantic>=2.0.0",                                               
      11       "python-dotenv>=1.0.0",                                          
      12   ]                                                                    
      13                                                                        
                                                                                
⏺ Write(CLAUDE.md)                                                              
  ⎿  Added 13 lines, removed 8 lines                                            
       8                                                                        
       9   **Use case**: Users ask questions in natural language → AI           
          translates to KQL → MCP executes against Defender → AI                
          interprets results.                                                   
      10                                                                        
      11 + **API**: Uses WindowsDefenderATP API                                 
         +(`api.securitycenter.microsoft.com`) for direct, fast access.         
      12 +                                                                      
      13   ## Commands                                                          
      14                                                                        
      15   ```bash                                                              
     ...                                                                        
      46                                                                        
      47   **Key components in server.py:**                                     
      48   - `server` - MCP Server instance                                     
      49 - - `get_graph_client()` - Lazy-initialized Microsoft Graph            
         -client                                                                
      49 + - `get_credential()` - Lazy-initialized Azure credential             
      50 + - `get_access_token()` - Gets bearer token for Defender API          
      51 + - `run_defender_query()` - Executes KQL via httpx to Defender        
         + API                                                                  
      52   - `list_tools()` - Declares the two hunting tools                    
      53   - `call_tool()` - Routes tool calls to handlers                      
      54 - - `run_hunting_query()` - Executes KQL and formats results           
      55 - - `get_hunting_schema()` - Fetches schema dynamically from           
         -Defender                                                              
      54                                                                        
      55   **Authentication:**                                                  
      56   1. Reads `AZURE_TENANT_ID`, `AZURE_CLIENT_ID` from                   
          environment                                                           
     ...                                                                        
      58      - `CertificateCredential` if                                      
          `AZURE_CLIENT_CERTIFICATE_PATH` is set (recommended)                  
      59      - `ClientSecretCredential` if `AZURE_CLIENT_SECRET` is set        
           (fallback)                                                           
      60   3. Optional: `AZURE_CLIENT_CERTIFICATE_PASSWORD` for                 
          encrypted certificates                                                
      61 + 4. Gets token with scope:                                            
         +`https://api.securitycenter.microsoft.com/.default`                   
      62                                                                        
      63 - ## Microsoft Graph API                                               
      63 + ## WindowsDefenderATP API                                            
      64                                                                        
      65 - - Advanced Hunting: `client.security.microsoft_graph_security        
         -_run_hunting_query.post()`                                            
      66 - - Schema discovery: Uses KQL `getschema` and `search * |             
         -distinct $table`                                                      
      65 + - Endpoint: `https://api.securitycenter.microsoft.com`               
      66 + - Advanced Hunting: `POST /api/advancedqueries/run`                  
      67 + - Request body: `{"Query": "<KQL>"}`                                 
      68 + - Response: `{"Schema": [...], "Results": [...], "Stats":            
         +{...}}`                                                               
      69                                                                        
      70   ## Required API Permissions                                          
      71                                                                        
      72 -App registration needs this Microsoft Graph                           
         -permission (Application type):                                        
      73 - - `ThreatHunting.Read.All`                                           
      72 +App registration needs this WindowsDefenderATP                        
         +permission (Application type):                                        
      73 + - `AdvancedQuery.Read.All` - Run advanced queries                    
                                                                                
⏺ Bash(source .venv/bin/activate && pip install -e ".[dev]" 2>&1 | tail -5)     
  ⎿        Successfully uninstalled mcp-defender-0.1.0                          
     Successfully installed mcp-defender-0.1.0                                  
     … +2 lines (ctrl+o to expand)                                              
                                                                                
⏺ Bash(source .venv/bin/activate && pytest -v && ruff check . && mypy src 2>&1) 
  ⎿  Error: Exit code 2                                                         
     ============================= test session starts                          
     ==============================                                             
     platform darwin -- Python 3.12.9, pytest-9.0.2, pluggy-1.6.0 -- /Users/tric
     yfalcon/Documents/AI/mcp/lordabbett/mcp-defender/.venv/bin/python          
     cachedir: .pytest_cache                                                    
     rootdir: /Users/trickyfalcon/Documents/AI/mcp/lordabbett/mcp-defender      
     configfile: pyproject.toml                                                 
     testpaths: tests                                                           
     plugins: anyio-4.12.1, asyncio-1.3.0                                       
     asyncio: mode=Mode.AUTO, debug=False,                                      
     asyncio_default_fixture_loop_scope=None,                                   
     asyncio_default_test_loop_scope=function                                   
     collecting ... collected 0 items / 1 error                                 
     … +16 lines (ctrl+o to see all)                                            
                                                                                
⏺ Bash(source .venv/bin/activate && pip show mcp-defender 2>&1)                 
  ⎿  Name: mcp-defender                                                         
     Version: 0.1.0                                                             
     Summary: MCP server for Microsoft Defender Advanced Hunting queries        
     … +10 lines (ctrl+o to expand)                                             
                                                                                
⏺ Bash(source .venv/bin/activate && python -c "from mcp_defender.server import  
      list_tools; print('OK')" 2>&1)                                            
  ⎿  Error: Exit code 1                                                         
     Traceback (most recent call last):                                         
       File "<string>", line 1, in <module>                                     
     ModuleNotFoundError: No module named 'mcp_defender'                        
                                                                                
⏺ Bash(source .venv/bin/activate && pip uninstall mcp-defender -y && pip install
       -e ".[dev]" 2>&1 | tail -10)                                             
  ⎿  Found existing installation: mcp-defender 0.1.0                            
     Uninstalling mcp-defender-0.1.0:                                           
       Successfully uninstalled mcp-defender-0.1.0                              
     … +15 lines (ctrl+o to expand)                                             
                                                                                
⏺ Bash(source .venv/bin/activate && python -c "from mcp_defender.server import  
      list_tools; print('OK')" 2>&1)                                            
  ⎿  OK                                                                         
                                                                                
⏺ Bash(source .venv/bin/activate && pytest -v && ruff check . && mypy src 2>&1) 
  ⎿  Error: Exit code 2                                                         
     ============================= test session starts                          
     ==============================                                             
     platform darwin -- Python 3.12.9, pytest-9.0.2, pluggy-1.6.0 -- /Users/tric
     yfalcon/Documents/AI/mcp/lordabbett/mcp-defender/.venv/bin/python          
     cachedir: .pytest_cache                                                    
     rootdir: /Users/trickyfalcon/Documents/AI/mcp/lordabbett/mcp-defender      
     configfile: pyproject.toml                                                 
     testpaths: tests                                                           
     plugins: anyio-4.12.1, asyncio-1.3.0                                       
     asyncio: mode=Mode.AUTO, debug=False,                                      
     asyncio_default_fixture_loop_scope=None,                                   
     asyncio_default_test_loop_scope=function                                   
     collecting ... collected 0 items / 1 error                                 
     … +16 lines (ctrl+o to see all)                                            
                                                                                
⏺ Bash(source .venv/bin/activate && PYTHONPATH=/Users/trickyfalcon/Documents/AI/
      mcp/lordabbett/mcp-defender/src pytest -v 2>&1)                           
  ⎿ ============================= test session starts =====================     
    =========                                                                   
    platform darwin -- Python 3.12.9, pytest-9.0.2, pluggy-1.6.0 -- /Users/     
    … +19 lines (ctrl+o to expand)                                              
                                                                                
                                                                                
                                                                                
⏺ Update(pyproject.toml)                                                        
  ⎿  Added 1 line                                                               
      43   [tool.pytest.ini_options]                                            
      44   asyncio_mode = "auto"                                                
      45   testpaths = ["tests"]                                                
      46 + pythonpath = ["src"]                                                 
                                                                                
⏺ Bash(source .venv/bin/activate && pytest -v && ruff check . && mypy src 2>&1) 
  ⎿  Error: Exit code 1                                                         
     ============================= test session starts                          
     ==============================                                             
     platform darwin -- Python 3.12.9, pytest-9.0.2, pluggy-1.6.0 -- /Users/tric
     yfalcon/Documents/AI/mcp/lordabbett/mcp-defender/.venv/bin/python          
     cachedir: .pytest_cache                                                    
     rootdir: /Users/trickyfalcon/Documents/AI/mcp/lordabbett/mcp-defender      
     configfile: pyproject.toml                                                 
     testpaths: tests                                                           
     plugins: anyio-4.12.1, asyncio-1.3.0                                       
     asyncio: mode=Mode.AUTO, debug=False,                                      
     asyncio_default_fixture_loop_scope=None,                                   
     asyncio_default_test_loop_scope=function                                   
     collecting ... collected 3 items                                           
     … +20 lines (ctrl+o to see all)                                            
                                                                                
⏺ Bash(source .venv/bin/activate && ruff check --fix . 2>&1)                    
  ⎿  Found 1 error (1 fixed, 0 remaining).                                      
                                                                                
⏺ Bash(source .venv/bin/activate && pytest -v && ruff check . && mypy src 2>&1) 
  ⎿  Error: Exit code 1                                                         
     ============================= test session starts                          
     ==============================                                             
     platform darwin -- Python 3.12.9, pytest-9.0.2, pluggy-1.6.0 -- /Users/tric
     yfalcon/Documents/AI/mcp/lordabbett/mcp-defender/.venv/bin/python          
     cachedir: .pytest_cache                                                    
     rootdir: /Users/trickyfalcon/Documents/AI/mcp/lordabbett/mcp-defender      
     configfile: pyproject.toml                                                 
     testpaths: tests                                                           
     plugins: anyio-4.12.1, asyncio-1.3.0                                       
     asyncio: mode=Mode.AUTO, debug=False,                                      
     asyncio_default_fixture_loop_scope=None,                                   
     asyncio_default_test_loop_scope=function                                   
     collecting ... collected 3 items                                           
     … +9 lines (ctrl+o to see all)                                             
                                                                                
⏺ Read(src/mcp_defender/server.py)                                              
  ⎿  Read 150 lines                                                             
                                                                                
⏺ Update(src/mcp_defender/server.py)                                            
  ⎿  Added 1 line, removed 1 line                                               
       6                                                                        
       7   import asyncio                                                       
       8   import os                                                            
       9 -from typing import Any                                                
       9 +from typing import Any, cast                                          
      10                                                                        
      11   import httpx                                                         
      12   from azure.identity import CertificateCredential,                    
          ClientSecretCredential                                                
                                                                                
⏺ Update(src/mcp_defender/server.py)                                            
  ⎿  Added 1 line, removed 1 line                                               
      141               timeout=120.0,                                          
      142           )                                                           
      143           response.raise_for_status()                                 
      144 -        return response.json()                                       
      144 +        return cast(dict[str, Any], response.json())                 
      145                                                                       
      146                                                                       
      147   async def run_hunting_query(query: str) ->                          
           list[TextContent]:                                                   
                                                                                
⏺ Bash(source .venv/bin/activate && pytest -v && ruff check . && mypy src 2>&1) 
  ⎿ ============================= test session starts =====================     
    =========                                                                   
    platform darwin -- Python 3.12.9, pytest-9.0.2, pluggy-1.6.0 -- /Users/     
    … +21 lines (ctrl+o to expand)                                              
                                                                                
                                                                                
                                                                                
⏺ All checks pass. Here's the summary:                                          
                                                                                
  Changes Made                                                                  
                                                                                
  Switched to WindowsDefenderATP API:                                           
  - Endpoint: https://api.securitycenter.microsoft.com/api/advancedqueries/run  
  - Scope: https://api.securitycenter.microsoft.com/.default                    
  - Uses your existing AdvancedQuery.Read.All permission                        
                                                                                
  Simplified dependencies:                                                      
  - Removed msgraph-sdk (saves ~50MB)                                           
  - Uses httpx directly for API calls                                           
                                                                                
  All checks pass:                                                              
  - 3 tests ✓                                                                   
  - Ruff linting ✓                                                              
  - Mypy type checking ✓                                                        
                                                                                
  To Test                                                                       
                                                                                
  1. Create .env file:                                                          
  cat > .env << 'EOF'                                                           
  AZURE_TENANT_ID=your-tenant-id                                                
  AZURE_CLIENT_ID=your-client-id                                                
  AZURE_CLIENT_CERTIFICATE_PATH=/path/to/cert.pem                               
  EOF                                                                           
                                                                                
  2. Run the server:                                                            
  source .venv/bin/activate                                                     
  mcp-defender                                                                  
                                                                                
  3. Test with MCP Inspector:                                                   
  npx @modelcontextprotocol/inspector mcp-defender                              
                                                                                
  Do you have your certificate file ready? What format is it in (.pem, .pfx,    
  etc.)?                                                                        
                                                                                
✻ Worked for 3m 11s                                                             
                                                                                
❯ yes i have added the .pem file... client id is                                
  6001783c-3639-4463-b140-788571a31a6c adn tenant id is                         
                                                                                
⏺ It looks like your tenant ID got cut off. Can you share the full tenant ID so 
  I can help you set up the .env file?                                          
                                                                                
  In the meantime, what's the path to your .pem certificate file? Once I have   
  both, I'll create the .env file for you.                                      
                                                                                
❯ d28987d8-dfd7-449b-b74e-08226e9aa34a                                          
                                                                                
⏺ Got it. What's the path to your .pem certificate file?                        
                                                                                
❯ pem file is in the same folder                                                
                                                                                
⏺ Search(pattern: "*.pem")                                                      
  ⎿  Found 3 files (ctrl+o to expand)                                           
                                                                                
⏺ Found cert.pem. Let me create the .env file.                                  
                                                                                
⏺ Write(.env)                                                                   
  ⎿  Wrote 4 lines to .env                                                      
     AZURE_TENANT_ID=d28987d8-dfd7-449b-b74e-08226e9aa34a                       
     AZURE_CLIENT_ID=6001783c-3639-4463-b140-788571a31a6c                       
     AZURE_CLIENT_CERTIFICATE_PATH=/Users/trickyfalcon/Documents/AI/mcp/lor     
     dabbett/mcp-defender/cert.pem                                              
                                                                                
⏺ Now let's test the connection. I'll run a quick test to verify authentication 
  works.                                                                        
                                                                                
⏺ Bash(source .venv/bin/activate && python -c "                                 
      import asyncio…)                                                          
  ⎿  Error: Exit code 1                                                         
     Traceback (most recent call last):                                         
       File "<string>", line 3, in <module>                                     
     ModuleNotFoundError: No module named 'mcp_defender'                        
                                                                                
⏺ Bash(source .venv/bin/activate && PYTHONPATH=src python -c "                  
      import asyncio…)                                                          
  ⎿ Authentication failed: Valid PEM but no BEGIN/END delimiters for a priv     
    ate key found. Are you sure this is a private key?                          
                                                                                
                                                                                
⏺ The .pem file doesn't have a private key. Let me check what's in it.          
                                                                                
⏺ Bash(head -5                                                                  
      /Users/trickyfalcon/Documents/AI/mcp/lordabbett/mcp-defender/cert.pem     
      2>&1)                                                                     
  ⎿  -----BEGIN CERTIFICATE-----                                                
     MIIDEzCCAfugAwIBAgIUXR9pJ6rmMOMT0SwZy+/r6cV43bEwDQYJKoZIhvcNAQEL           
     BQAwGTEXMBUGA1UEAwwOTURFLUFQSS1TZXJ2ZXIwHhcNMjUxMTAxMjI1OTAzWhcN           
     … +2 lines (ctrl+o to expand)                                              
                                                                                
⏺ The .pem file only contains the public certificate, but Azure authentication  
  needs the private key as well.                                                
                                                                                
  When you created the certificate, you should have gotten two parts:           
  1. Certificate (public) - -----BEGIN CERTIFICATE----- ← this is what you have 
  2. Private Key - -----BEGIN PRIVATE KEY----- or -----BEGIN RSA PRIVATE        
  KEY----- ← this is missing                                                    
                                                                                
  Do you have a separate private key file (.key, .pem, or .pfx)?                
                                                                                
  If you generated the certificate using OpenSSL, you would have gotten a       
  private key file. If you used Azure Portal or PowerShell, you might have a    
  .pfx file that contains both.                                                 
                                                                                
  How did you create the certificate?                                           
                                                                                
✻ Worked for 33s                                                                
                                                                                
❯ i have added the rpiovate key as well to the same filder called               
  private.key                                                                   
                                                                                
⏺ Search(pattern: "*.key")                                                      
  ⎿  Found 1 file (ctrl+o to expand)                                            
                                                                                
⏺ Azure Identity needs both in a single file. Let me combine them.              
                                                                                
⏺ Bash(cat                                                                      
      /Users/trickyfalcon/Documents/AI/mcp/lordabbett/mcp-defender/private.key  
      /Users/trickyfalcon/Documents/AI/mcp/lordabbett/mcp-defender/cert.pem >   
      /Users/tric…)                                                             
  ⎿  Created combined.pem                                                       
                                                                                
⏺ Update(.env)                                                                  
  ⎿  Added 1 line, removed 1 line                                               
      1   AZURE_TENANT_ID=d28987d8-dfd7-449b-b74e-08226e9aa34a                  
      2   AZURE_CLIENT_ID=6001783c-3639-4463-b140-788571a31a6c                  
      3 -AZURE_CLIENT_CERTIFICATE_PATH=/Users/trickyfalcon/Documents/AI/m       
        -cp/lordabbett/mcp-defender/cert.pem                                    
      3 +AZURE_CLIENT_CERTIFICATE_PATH=/Users/trickyfalcon/Documents/AI/m       
        +cp/lordabbett/mcp-defender/combined.pem                                
                                                                                
⏺ Now let's test authentication.                                                
                                                                                
⏺ Bash(source .venv/bin/activate && PYTHONPATH=src python -c "                  
      import asyncio…)                                                          
  ⎿  Authentication successful! Token length: 2539 chars                        
                                                                                
⏺ Authentication works. Let's test a real query against Defender.               
                                                                                
⏺ Bash(source .venv/bin/activate && PYTHONPATH=src python -c " timeout: 30s     
      import asyncio…)                                                          
  ⎿ <string>:9: SyntaxWarning: invalid escape sequence '\!'                     
    Query successful\!                                                          
    Schema: ['Timestamp', 'DeviceId', 'DeviceName', 'ClientVersion', 'Publi     
    … +12 lines (ctrl+o to expand)                                              
                                                                                
                                                                                
⏺ It works! 🎉 Successfully connected to Defender and queried DeviceInfo.       
                                                                                
  Now you can run the MCP server:                                               
                                                                                
  source .venv/bin/activate                                                     
  mcp-defender                                                                  
                                                                                
  Or test with MCP Inspector:                                                   
                                                                                
  npx @modelcontextprotocol/inspector mcp-defender                              
                                                                                
  To add to Claude Desktop, add this to your config (~/Library/Application      
  Support/Claude/claude_desktop_config.json):                                   
                                                                                
  {                                                                             
    "mcpServers": {                                                             
      "defender": {                                                             
        "command": "/Users/trickyfalcon/Documents/AI/mcp/lordabbett/mcp-defender
  /.venv/bin/python",                                                           
        "args": ["-m", "mcp_defender.server"],                                  
        "env": {                                                                
          "PYTHONPATH":                                                         
  "/Users/trickyfalcon/Documents/AI/mcp/lordabbett/mcp-defender/src",           
          "AZURE_TENANT_ID": "d28987d8-dfd7-449b-b74e-08226e9aa34a",            
          "AZURE_CLIENT_ID": "6001783c-3639-4463-b140-788571a31a6c",            
          "AZURE_CLIENT_CERTIFICATE_PATH":                                      
  "/Users/trickyfalcon/Documents/AI/mcp/lordabbett/mcp-defender/combined.pem"   
        }                                                                       
      }                                                                         
    }                                                                           
  }                                                                             
                                                                                
  Want me to test a more interesting query like listing recent security events  
  or checking for suspicious activity?                                          
                                                                                
✻ Crunched for 38s                                                              
                                                                                
❯ yes go for it                                                                 
                                                                                
⏺ Bash(source .venv/bin/activate && PYTHONPATH=src python -c " timeout: 1m 0s   
      import asyncio…)                                                          
  ⎿  === Recent Device Events (last 24h) ===                                    
       PowerShellCommand: 558770 events                                         
       NamedPipeEvent: 492771 events                                            
     … +8 lines (ctrl+o to expand)                                              
                                                                                
⏺ Bash(source .venv/bin/activate && PYTHONPATH=src python -c " timeout: 1m 0s   
      import asyncio…)                                                          
  ⎿  <string>:23: SyntaxWarning: invalid escape sequence '\!'                   
     === Potentially Suspicious PowerShell (last 24h) ===                       
       [2026-01-19T07:49:36] prd1qtngppu0028.lordabbett.com                     
     … +14 lines (ctrl+o to expand)                                             
                                                                                
⏺ Bash(source .venv/bin/activate && PYTHONPATH=src python -c " timeout: 1m 0s   
      import asyncio…)                                                          
  ⎿  === Failed Logon Attempts (last 24h) ===                                   
        on la-028780393657: 78 failures                                         
        on la-0162k23173fb: 40 failures                                         
     … +8 lines (ctrl+o to expand)                                              
                                                                                
⏺ Bash(source .venv/bin/activate && PYTHONPATH=src python -c " timeout: 1m 0s   
      import asyncio…)                                                          
  ⎿  === Available Hunting Tables ===                                           
       DeviceAlertEvents                                                        
       DeviceBaselineComplianceAssessment                                       
     … +24 lines (ctrl+o to expand)                                             
                                                                                
⏺ MCP is fully working! Here's what we found in your environment:               
                                                                                
  Last 24 Hours Summary                                                         
  Category: Top Events                                                          
  Finding: 558K PowerShell commands, 493K Named Pipe events, 233K DPAPI access  
  ────────────────────────────────────────                                      
  Category: PowerShell w/ Bypass                                                
  Finding: Found on prd1qtngppu0028 - looks like SCCM/ConfigMgr (legitimate)    
  ────────────────────────────────────────                                      
  Category: Failed Logons                                                       
  Finding: 78 failures on la-028780393657 (empty username - worth investigating)
  ────────────────────────────────────────                                      
  Category: Available Tables                                                    
  Finding: 26 tables including Device, Process, Network, Registry, Vulnerability
                                                                                
    data                                                                        
  Your MCP Tools                                                                
                                                                                
  Now when you connect Claude to this MCP, you can ask things like:             
                                                                                
  - "Show me any suspicious PowerShell activity in the last hour"               
  - "Find devices with failed login attempts from unknown accounts"             
  - "What software vulnerabilities exist on our endpoints?"                     
  - "Show network connections to external IPs from finance department machines" 
                                                                                
  Claude will translate your question → KQL → execute via MCP → explain results.
                                                                                
  Want me to:                                                                   
  1. Add the MCP config to Claude Desktop automatically?                        
  2. Run any specific security investigation query?                             
  3. Add .gitignore entries for sensitive files (combined.pem, .env)?           
                                                                                
✻ Brewed for 46s                                                                
                                                                                
❯ this is good... now help me create a gitignore file so i can push this to     
  github and clean up the code and remove all creds and make sure its           
  tested against code quality and code secrity standards                        
                                                                                
⏺ Write(.gitignore)                                                             
  ⎿  Error writing file                                                         
                                                                                
⏺ Read(.gitignore)                                                              
  ⎿  Read 48 lines                                                              
                                                                                
⏺ Write(.gitignore)                                                             
  ⎿  Added 15 lines, removed 4 lines                                            
       1 + # Credentials and secrets - NEVER commit these                       
       2 + .env                                                                 
       3 + .env.*                                                               
       4 + *.pem                                                                
       5 + *.key                                                                
       6 + *.pfx                                                                
       7 + *.p12                                                                
       8 + *.crt                                                                
       9 + *.cer                                                                
      10 +                                                                      
      11   # Python                                                             
      12   __pycache__/                                                         
      13   *.py[cod]                                                            
     ...                                                                        
      24   .venv/                                                               
      25   venv/                                                                
      26   ENV/                                                                 
      27 + env/                                                                 
      28                                                                        
      29   # IDE                                                                
      30   .idea/                                                               
      31   .vscode/                                                             
      32   *.swp                                                                
      33   *.swo                                                                
      34 + *~                                                                   
      35 + .DS_Store                                                            
      36                                                                        
      37 - # Environment variables                                              
      38 - .env                                                                 
      39 - .env.local                                                           
      40 -                                                                      
      37   # Testing                                                            
      38   .pytest_cache/                                                       
      39   .coverage                                                            
      40   htmlcov/                                                             
      41 + .tox/                                                                
      42 + .nox/                                                                
      43                                                                        
      44   # mypy                                                               
      45   .mypy_cache/                                                         
                                                                                
⏺ Bash(grep -rn "lordabbett\|d28987d8\|6001783c\|password\|secret\|token"       
      --include="*.py"                                                          
      /Users/trickyfalcon/Documents/AI/mcp/lordabbett/mcp-defender/src 2>&1 ||  
      ech…)                                                                     
  ⎿ /Users/trickyfalcon/Documents/AI/mcp/lordabbett/mcp-defender/src/mcp_de     
    fender/server.py:35:        client_secret = os.environ.get("AZURE_CLIEN     
    T_SECRET")                                                                  
    … +22 lines (ctrl+o to expand)                                              
                                                                                
                                                                                
                                                                                
⏺ No hardcoded credentials - all values come from environment variables. Now let
   me add security scanning.                                                    
                                                                                
⏺ Update(pyproject.toml)                                                        
  ⎿  Added 1 line                                                               
      17       "pytest-asyncio>=0.23.0",                                        
      18       "ruff>=0.3.0",                                                   
      19       "mypy>=1.9.0",                                                   
      20 +     "bandit>=1.7.0",                                                 
      21   ]                                                                    
      22                                                                        
      23   [project.scripts]                                                    
                                                                                
⏺ Bash(source .venv/bin/activate && pip install bandit 2>&1 | tail -3)          
  ⎿  [notice] A new release of pip is available: 24.3.1 -> 25.3                 
     [notice] To update, run: pip install --upgrade pip                         
                                                                                
⏺ Bash(source .venv/bin/activate && echo "=== PYTEST ===" && pytest -v && echo  
      -e "\n=== RUFF ===" && ruff check . && echo -e "\n=== MYPY ===" && mypy   
      src && echo -e "…)                                                        
  ⎿ === PYTEST ===                                                              
    ============================= test session starts =====================     
    =========                                                                   
    … +56 lines (ctrl+o to expand)                                              
                                                                                
                                                                                
⏺ All checks pass. Now let me update the README for public release.             
                                                                                
⏺ Read(README.md)                                                               
  ⎿  Read 107 lines                                                             
                                                                                
⏺ Write(README.md)                                                              
  ⎿  Added 85 lines, removed 23 lines                                           
       1   # MCP Defender                                                       
       2                                                                        
       3 - An MCP (Model Context Protocol) server for Microsoft Defender        
         - Advanced Hunting. This server enables AI assistants to query         
         -security data, investigate incidents, and assist with threat          
         -hunting using natural language.                                       
       3 + An MCP (Model Context Protocol) server for Microsoft Defender        
         + Advanced Hunting. Enables AI assistants to investigate               
         +security events using natural language by translating queries         
         +to KQL and executing them against Defender.                           
       4                                                                        
       5 + ## How It Works                                                      
       6 +                                                                      
       7 + ```                                                                  
       8 + User: "Show me suspicious PowerShell activity in the last            
         +hour"                                                                 
       9 +   ↓                                                                  
      10 + AI translates to KQL using schema knowledge                          
      11 +   ↓                                                                  
      12 + MCP executes query against Defender API                              
      13 +   ↓                                                                  
      14 + AI interprets and explains the results                               
      15 + ```                                                                  
      16 +                                                                      
      17   ## Features                                                          
      18                                                                        
      19 -- **Advanced Hunting Queries                                          
         -**: Execute KQL queries against Defender's Advanced Hunting           
      20 -- **Schema Discovery**: Explore available tables and columns          
      21 - - **Incident Management**: List and investigate security             
         -incidents                                                             
      22 - - **Alert Analysis**: Review and analyze security alerts             
      19 +- **Advanced Hunting                                                  
         +**: Execute KQL queries against Defender's Advanced Hunting API       
      20 +- **Dynamic Schema Discovery**: Fetch                                 
         + available tables and columns                                         
         + directly from your Defender instance                                 
      21 + - **Natural Language Security Investigations**: Let AI               
         +translate your questions into KQL                                     
      22 + - **Certificate Authentication**: Secure authentication using        
         + Azure AD certificates (recommended)                                  
      23                                                                        
      24   ## Prerequisites                                                     
      25                                                                        
      26   - Python 3.10+                                                       
      27 - - Azure AD App Registration with Microsoft Graph API                 
         -permissions:                                                          
      28 -   - `ThreatHunting.Read.All`                                         
      29 -   - `SecurityIncident.Read.All`                                      
      30 -   - `SecurityAlert.Read.All`                                         
      27 + - Azure AD App Registration with WindowsDefenderATP                  
         +permission:                                                           
      28 +   - `AdvancedQuery.Read.All` - Run advanced queries                  
      29                                                                        
      30   ## Installation                                                      
      31                                                                        
      32   ```bash                                                              
      33 + # Clone the repository                                               
      34 + git clone https://github.com/yourusername/mcp-defender.git           
      35 + cd mcp-defender                                                      
      36 +                                                                      
      37   # Create and activate virtual environment                            
      38   python -m venv .venv                                                 
      39   source .venv/bin/activate  # On Windows:                             
          .venv\Scripts\activate                                                
     ...                                                                        
      32                                                                        
      33   1. Copy `.env.example` to `.env`                                     
      34   2. Fill in your Azure AD credentials:                                
      35 -    - `AZURE_TENANT_ID`: Your Azure AD tenant ID                      
      36 -    - `AZURE_CLIENT_ID`: App registration client ID                   
      37 -    - `AZURE_CLIENT_SECRET`: App registration client secret           
      35                                                                        
      36 + ```bash                                                              
      37 + AZURE_TENANT_ID=your-tenant-id                                       
      38 + AZURE_CLIENT_ID=your-client-id                                       
      39 +                                                                      
      40 + # Option 1: Certificate authentication (recommended)                 
      41 + AZURE_CLIENT_CERTIFICATE_PATH=/path/to/combined.pem                  
      42 +                                                                      
      43 + # Option 2: Client secret authentication                             
      44 + # AZURE_CLIENT_SECRET=your-client-secret                             
      45 + ```                                                                  
      46 +                                                                      
      47 + ### Certificate Setup                                                
      48 +                                                                      
      49 + For certificate authentication, combine your private key and         
         +certificate:                                                          
      50 +                                                                      
      51 + ```bash                                                              
      52 + cat private.key cert.pem > combined.pem                              
      53 + ```                                                                  
      54 +                                                                      
      55   ## Usage                                                             
      56                                                                        
      57   ### Running the Server                                               
     ...                                                                        
      44   mcp-defender                                                         
      45   ```                                                                  
      46                                                                        
      47 + ### Testing with MCP Inspector                                       
      48 +                                                                      
      49 + ```bash                                                              
      50 + npx @modelcontextprotocol/inspector mcp-defender                     
      51 + ```                                                                  
      52 +                                                                      
      53   ### Claude Desktop Configuration                                     
      54                                                                        
      55   Add to your Claude Desktop config (`~/Library/Application            
          Support/Claude/claude_desktop_config.json`):                          
     ...                                                                        
      52   {                                                                    
      53     "mcpServers": {                                                    
      54       "defender": {                                                    
      55 -      "command": "/path/to/.venv/bin/mcp-defender",                   
      55 +      "command": "/path/to/mcp-defender/.venv/bin/python",            
      56 +       "args": ["-m", "mcp_defender.server"],                         
      57         "env": {                                                       
      58 +         "PYTHONPATH": "/path/to/mcp-defender/src",                   
      59           "AZURE_TENANT_ID": "your-tenant-id",                         
      60           "AZURE_CLIENT_ID": "your-client-id",                         
      61 -         "AZURE_CLIENT_SECRET": "your-client-secret"                  
      61 +         "AZURE_CLIENT_CERTIFICATE_PATH":                             
         +"/path/to/combined.pem"                                               
      62         }                                                              
      63       }                                                                
      64     }                                                                  
     ...                                                                        
       68   | Tool | Description |                                              
       69   |------|-------------|                                              
       70   | `run_hunting_query` | Execute KQL queries against Advanced        
            Hunting |                                                           
       71 -| `get_hunting_schema` | Get available tables and columns |          
       72 - | `list_incidents` | List recent security incidents |               
       73 - | `get_incident` | Get details for a specific incident |            
       74 - | `list_alerts` | List recent security alerts |                     
       71 +| `get_hunting_schema` | Get available tables and columns            
          +dynamically |                                                        
       72                                                                       
       73 -## Example Queries                                                   
       73 +## Example Natural Language Queries                                  
       74                                                                       
       75 + Once connected to Claude, you can ask:                              
       76 +                                                                     
       77 + - *"Show me any suspicious PowerShell activity in the last          
          +hour"*                                                               
       78 + - *"Find devices with failed login attempts"*                       
       79 + - *"What processes are making network connections to                
          +external IPs?"*                                                      
       80 + - *"List all devices that haven't checked in for 7 days"*           
       81 +                                                                     
       82 + ## Example KQL Queries                                              
       83 +                                                                     
       84   ```kql                                                              
       85   // Find failed logon attempts                                       
       86   DeviceLogonEvents                                                   
       87   | where ActionType == "LogonFailed"                                 
       88 - | summarize count() by AccountName, DeviceName                      
       89 - | top 10 by count_                                                  
       88 + | where Timestamp > ago(24h)                                        
       89 + | summarize FailedAttempts = count() by AccountName,                
          +DeviceName                                                           
       90 + | top 10 by FailedAttempts                                          
       91                                                                       
       92 - // Detect PowerShell encoded commands                               
       92 + // Detect suspicious PowerShell                                     
       93   DeviceProcessEvents                                                 
       94 - | where ProcessCommandLine contains "-EncodedCommand"               
       94 + | where FileName in~ ("powershell.exe", "pwsh.exe")                 
       95 + | where ProcessCommandLine has_any ("encodedcommand",               
          +"bypass", "hidden", "downloadstring")                                
       96   | project Timestamp, DeviceName, AccountName,                       
           ProcessCommandLine                                                   
       97 +                                                                     
       98 + // Network connections to external IPs                              
       99 + DeviceNetworkEvents                                                 
      100 + | where RemoteIPType == "Public"                                    
      101 + | where Timestamp > ago(1h)                                         
      102 + | summarize ConnectionCount = count() by DeviceName,                
          +RemoteIP                                                             
      103 + | top 20 by ConnectionCount                                         
      104   ```                                                                 
      105                                                                       
      106   ## Development                                                      
     ...                                                                        
       99                                                                       
      100   # Type check                                                        
      101   mypy src                                                            
      102 +                                                                     
      103 + # Security scan                                                     
      104 + bandit -r src                                                       
      105   ```                                                                 
      106                                                                       
      107 + ## API Reference                                                    
      108 +                                                                     
      109 + This server uses the WindowsDefenderATP API:                        
      110 + - **Endpoint**: `https://api.securitycenter.microsoft.com`          
      111 + - **Advanced Hunting**: `POST /api/advancedqueries/run`             
      112 +                                                                     
      113   ## License                                                          
      114                                                                       
      115   MIT                                                                 
                                                                                
⏺ Let me verify what files would be committed.                                  
                                                                                
⏺ Bash(git init 2>/dev/null; git status --short 2>&1)                           
  ⎿ Initialized empty Git repository in /Users/trickyfalcon/Documents/AI/mc     
    p/lordabbett/mcp-defender/.git/                                             
    ?? .gitignore                                                               
    … +5 lines (ctrl+o to expand)                                               
                                                                                
                                                                                
⏺ Sensitive files are properly ignored. Let me verify .env.example is present.  
                                                                                
⏺ Bash(ls -la                                                                   
      /Users/trickyfalcon/Documents/AI/mcp/lordabbett/mcp-defender/*.example    
      /Users/trickyfalcon/Documents/AI/mcp/lordabbett/mcp-defender/.env* 2>&1)  
  ⎿  Error: Exit code 1                                                         
     (eval):1: no matches found:                                                
     /Users/trickyfalcon/Documents/AI/mcp/lordabbett/mcp-defender/*.example     
                                                                                
⏺ Bash(ls -la /Users/trickyfalcon/Documents/AI/mcp/lordabbett/mcp-defender/.env*
       2>&1 || echo "No .env files found")                                      
  ⎿ -rw-r--r--@ 1 trickyfalcon  staff  210 Jan 19 12:32 /Users/trickyfalcon     
    /Documents/AI/mcp/lordabbett/mcp-defender/.env                              
    -rw-r--r--@ 1 trickyfalcon  staff  672 Jan 19 10:06 /Users/trickyfalcon     
    /Documents/AI/mcp/lordabbett/mcp-defender/.env.example                      
                                                                                
                                                                                
                                                                                
⏺ Bash(git status --short 2>&1)                                                 
  ⎿  ?? .gitignore                                                              
     ?? CLAUDE.md                                                               
     ?? README.md                                                               
     … +3 lines (ctrl+o to expand)                                              
                                                                                
⏺ The .env.example is being ignored. Let me fix the .gitignore.                 
                                                                                
⏺ Update(.gitignore)                                                            
  ⎿  Added 2 lines, removed 1 line                                              
      1   # Credentials and secrets - NEVER commit these                        
      2   .env                                                                  
      3 -.env.*                                                                 
      3 +.env.local                                                             
      4 + !.env.example                                                         
      5   *.pem                                                                 
      6   *.key                                                                 
      7   *.pfx                                                                 
                                                                                
⏺ Bash(git status --short 2>&1)                                                 
  ⎿  ?? .env.example                                                            
     ?? .gitignore                                                              
     ?? CLAUDE.md                                                               
     … +4 lines (ctrl+o to expand)                                              
                                                                                
⏺ All ready for GitHub. Here's the final summary:                               
                                                                                
  Files Ready for Commit                                                        
  ┌────────────────┬────────────────────────────┐                               
  │      File      │           Status           │                               
  ├────────────────┼────────────────────────────┤                               
  │ .gitignore     │ ✓ Protects sensitive files │                               
  ├────────────────┼────────────────────────────┤                               
  │ .env.example   │ ✓ Template for users       │                               
  ├────────────────┼────────────────────────────┤                               
  │ CLAUDE.md      │ ✓ Updated docs             │                               
  ├────────────────┼────────────────────────────┤                               
  │ README.md      │ ✓ Public-ready docs        │                               
  ├────────────────┼────────────────────────────┤                               
  │ pyproject.toml │ ✓ With security tools      │                               
  ├────────────────┼────────────────────────────┤                               
  │ src/           │ ✓ Clean code               │                               
  ├────────────────┼────────────────────────────┤                               
  │ tests/         │ ✓ 3 passing tests          │                               
  └────────────────┴────────────────────────────┘                               
  Excluded (Sensitive)                                                          
  ┌──────────────┬───────────┐                                                  
  │     File     │  Status   │                                                  
  ├──────────────┼───────────┤                                                  
  │ .env         │ ✓ Ignored │                                                  
  ├──────────────┼───────────┤                                                  
  │ *.pem, *.key │ ✓ Ignored │                                                  
  ├──────────────┼───────────┤                                                  
  │ .venv/       │ ✓ Ignored │                                                  
  └──────────────┴───────────┘                                                  
  Quality Checks                                                                
  ┌────────┬──────────────────────┐                                             
  │ Check  │        Result        │                                             
  ├────────┼──────────────────────┤                                             
  │ pytest │ ✓ 3 passed           │                                             
  ├────────┼──────────────────────┤                                             
  │ ruff   │ ✓ No issues          │                                             
  ├────────┼──────────────────────┤                                             
  │ mypy   │ ✓ No issues          │                                             
  ├────────┼──────────────────────┤                                             
  │ bandit │ ✓ No security issues │                                             
  └────────┴──────────────────────┘                                             
  To push to GitHub:                                                            
                                                                                
  git add .                                                                     
  git commit -m "Initial commit: MCP server for Defender Advanced Hunting       
                                                                                
  - KQL query execution via WindowsDefenderATP API                              
  - Dynamic schema discovery                                                    
  - Certificate and client secret authentication                                
  - Full test suite with security scanning"                                     
  git branch -M main                                                            
  git remote add origin https://github.com/yourusername/mcp-defender.git        
  git push -u origin main                                                       
                                                                                
  Want me to help you create the initial commit?                                
                                                                                
✻ Worked for 2m 19s                                                             
                                                                                
❯ all done :) /exit                                                             
                                                                                
⏺ Great work! You now have a fully functional MCP server for Defender Advanced  
  Hunting.                                                                      
                                                                                
  Quick recap:                                                                  
  - Natural language → KQL → Defender API                                       
  - Certificate auth working                                                    
  - Clean code, all checks passing                                              
  - Ready for GitHub                                                            
                                                                                
  Enjoy your security investigations! 👋                                        
                                                                                
❯ /exit                                                                         
  ⎿  Goodbye!                                                                   
                                                                                
❯ /theme                                                                        
  ⎿  Theme picker dismissed                                                     

