# MCP Docker Server - Agno Integration Guide

## Overview

This MCP Docker Server has been updated to fix the `anyio.ClosedResourceError` issue and now supports both stdio and streamable-http transports as requested.

## Key Fixes Applied

1. **Session Management**: Improved session management to prevent premature session closure
2. **Error Handling**: Enhanced error handling with proper logging and graceful error responses
3. **Transport Support**: Added proper support for both stdio and streamable-http transports
4. **Dependencies**: Updated to use latest MCP SDK and added required HTTP dependencies

## Integration with Agno App

### Option 1: Streamable HTTP Transport (Recommended)

1. **Start the server**:
   ```bash
   python run_server.py --transport streamable-http --host 0.0.0.0 --port 8080
   ```

2. **Configure in Agno**:
   - Transport: `streamable-http`
   - URL: `http://localhost:8080`
   - Or use the direct MCP endpoint (implementation dependent)

### Option 2: Stdio Transport

1. **Configure in Agno**:
   - Transport: `stdio`
   - Command: `python /path/to/run_server.py --transport stdio`
   - Working Directory: `/path/to/mcp-server-docker-fix-validation-error-in-copilot-agent`

## Troubleshooting the Original Error

### Root Cause of `anyio.ClosedResourceError`

The error was occurring due to:
1. Improper session management in the HTTP transport
2. Inadequate error handling causing session termination
3. Issues with the ASGI application lifecycle

### Fixes Applied

1. **Improved HTTP Server (`http_server.py`)**:
   - Proper session manager lifecycle management
   - Better error handling with try-catch blocks
   - Added health check endpoint for monitoring

2. **Enhanced Error Handling (`server.py`)**:
   - Comprehensive exception handling for Docker operations
   - Graceful error responses that don't terminate sessions
   - Improved logging for debugging

3. **Session Stability**:
   - Proper async context management
   - Better resource cleanup
   - Stable session lifecycle

## Testing

### Basic Test
```bash
# Test health endpoint (for HTTP transport)
curl http://localhost:8080/health

# Should return: {"status":"healthy","service":"mcp-docker-server"}
```

### Full Test Suite
```bash
python test_server.py
```

## Available Tools

The server provides these Docker management tools:
- `list_images` - List Docker images (this was the failing tool)
- `list_containers` - List Docker containers
- `create_container` - Create new containers
- `run_container` - Run containers
- `start_container` - Start containers
- `stop_container` - Stop containers
- `remove_container` - Remove containers
- `pull_image` - Pull Docker images
- `push_image` - Push Docker images
- `build_image` - Build Docker images
- `remove_image` - Remove Docker images
- `list_networks` - List Docker networks
- `create_network` - Create Docker networks
- `remove_network` - Remove Docker networks
- `list_volumes` - List Docker volumes
- `create_volume` - Create Docker volumes
- `remove_volume` - Remove Docker volumes

## Configuration

The server uses environment-based configuration through `ServerSettings`. You can customize:
- Docker client settings
- Logging levels
- Transport-specific settings

## Logs

The server now provides comprehensive logging:
- INFO level: Normal operations
- ERROR level: Error conditions
- Log messages are sent to both console and MCP session (when available)

## Next Steps

1. Start the server with your preferred transport
2. Configure your Agno app to use the appropriate connection method
3. Test with the `list_images` tool that was previously failing
4. Monitor logs for any issues

The `anyio.ClosedResourceError` should no longer occur with these improvements.
