# MCP Roblox Docs - Improvement Report

**Generated:** January 25, 2026  
**Current Version:** 3.3.0  
**Audit By:** OpenCode AI  

This report tracks recommended improvements based on MCP best practices audit.

---

## Summary

| Priority | Total | Implemented | Remaining |
|----------|-------|-------------|-----------|
| High     | 3     | 3           | 0         |
| Medium   | 4     | 4           | 0         |
| Low      | 4     | 4           | 0         |

**Status:** ALL items completed! Full MCP best practices compliance achieved.

---

## High Priority Issues

### H1. Input Validation Not Wired Up
**Status:** ✅ Completed (v3.2.0)  
**File:** `src/server.py`  
**Changes:** Added validation imports and calls to all 17 tools that accept user input.

---

### H2. Duplicate Regex Patterns in loader.py
**Status:** ✅ Completed (v3.2.0)  
**File:** `src/data/loader.py`  
**Changes:** Removed duplicate regex block.

---

### H3. USER_AGENT Version Outdated
**Status:** ✅ Completed (v3.2.0)  
**File:** `src/data/syncer.py`  
**Changes:** Updated USER_AGENT to `"mcp-roblox-docs/3.1.0"`

---

## Medium Priority Issues

### M1. No MCP Resources Primitive
**Status:** ✅ Completed (v3.3.0)  
**File:** `src/server.py`  
**Changes:** Added 5 resource templates:
- `roblox://class/{name}`
- `roblox://enum/{name}`
- `roblox://datatype/{name}`
- `roblox://library/{name}`
- `roblox://luau/{topic}`

---

### M2. No MCP Prompts Primitive
**Status:** ✅ Completed (v3.3.0)  
**File:** `src/server.py`  
**Changes:** Added 4 prompt templates:
- `explain-api` - Explain a Roblox API class
- `debug-deprecation` - Help migrate from deprecated APIs
- `code-review` - Review Roblox Luau code
- `learn-service` - Learn about a Roblox service

---

### M3. No Error Return with isError Flag
**Status:** ✅ Completed (v3.3.0)  
**Investigation Result:** FastMCP automatically handles this. Exceptions raised in tools are converted to error responses with `isError: true`. Our approach of returning error strings for expected errors (like "Class not found") provides better UX, while unexpected exceptions properly set isError.

---

### M4. Missing Timeouts on External Calls
**Status:** ✅ Completed (v3.3.0)  
**File:** `src/server.py`  
**Changes:** Added 2-minute timeout to `roblox_sync()` operation using `asyncio.timeout()`. DevForum search already had 30s timeout via httpx.

---

## Low Priority Issues

### L1. No Logging Level Configuration
**Status:** ✅ Completed (v3.2.0)  
**File:** `src/server.py`  
**Changes:** Added `MCP_ROBLOX_DOCS_LOG_LEVEL` environment variable support.

---

### L2. No Cache Cleanup for Stale Disk Entries
**Status:** ✅ Completed (v3.2.0)  
**File:** `src/server.py`  
**Changes:** Updated `_save_devforum_cache()` to filter out expired entries before saving.

---

### L3. Missing py.typed Marker
**Status:** ✅ Completed (v3.2.0)  
**File:** `src/py.typed` (new file)  
**Changes:** Created empty py.typed marker for PEP 561 compliance.

---

### L4. No Health Check Tool
**Status:** ✅ Completed (v3.2.0)  
**File:** `src/server.py`  
**Changes:** Added `roblox_health` tool with version, stats, and diagnostics.

---

## Implementation Checklist

### High Priority
- [x] H1. Wire up validation functions in all tools
- [x] H2. Remove duplicate regex patterns in loader.py
- [x] H3. Update USER_AGENT to 3.1.0

### Medium Priority
- [x] M1. Add Resources primitive (5 resource templates)
- [x] M2. Add Prompts primitive (4 prompt templates)
- [x] M3. Investigate isError flag handling (FastMCP handles automatically)
- [x] M4. Add timeouts to external operations (2 min for sync)

### Low Priority
- [x] L1. Add configurable logging via environment variable
- [x] L2. Add cache cleanup for expired disk entries
- [x] L3. Add py.typed marker file
- [x] L4. Add roblox_health status tool

---

## Version History

| Version | Changes |
|---------|---------|
| 3.1.0   | Initial audit - all items pending |
| 3.2.0   | Completed H1, H2, H3, L1, L2, L3, L4 |
| 3.3.0   | Completed M1, M2, M3, M4 - ALL ITEMS DONE |

---

## Final Stats (v3.3.0)

- **Tools:** 27
- **Resources:** 5 templates
- **Prompts:** 4 templates
- **Tests:** 56 passing
- **MCP Compliance:** Full (all 3 primitives implemented)
