v4.5.0 - API-First MCP Architecture

🚀 API-First MCP Architecture & Legacy Cleanup

New Features

API-First MCP Server (mcp_server/server_api_client.py)

• Thin HTTP client calls FastAPI backend (468 lines)
• 5 MCP tools via HTTP API:
  • check_status - API health and connectivity
  • search_standards - Search with filters
  • analyze_code - Code analysis
  • list_standards - List all standards
  • get_recommendations - Improvement suggestions
• Clean stdout (MCP protocol compliant - no Neo4j pollution)
• Multi-client support (Claude Desktop, Claude Code, other agents)
• Remote access capability via HTTP

Architecture Improvements

Before: MCP → Direct Neo4j/Files → Stdout pollution, single-client
After: MCP Client → HTTP API → FastAPI → Neo4j → Clean stdout, multi-client

Benefits:

• Remote API access (not just local file-based)
• Centralized authentication and rate limiting
• Redis caching for improved performance
• 3,420 standards accessible via Neo4j
• Graceful degradation when services unavailable

Documentation

• API_FIRST_MCP_IMPLEMENTATION.md (321 lines): Architecture, testing, next steps
• MCP_SERVER_ARCHITECTURE_ANALYSIS.md (303 lines): Server evolution, Issue #11 investigation
• .mcp.json: Claude Desktop configuration

Cleanup

• Archived 8 legacy MCP server files to mcp_server/archive/
• Organized test files into tests/integration/
• Resolves GitHub Issue #11 (MCP server confusion)

Two MCP Server Options

1. server_simple.py (Local, file-based) - For simple deployments
2. server_api_client.py (Remote, HTTP API) - NEW - For remote access

Both are production-ready and MCP protocol compliant.

Testing

• API server verified running on port 8000
• Health endpoint healthy
• Neo4j connected (3,420 standards)
• Redis connected (caching available)
• HTTP endpoints returning 200 OK

Backward Compatibility

• No breaking changes
• server_simple.py still available for local use
• All existing functionality preserved

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See DEVELOPMENT_STATE.md for detailed implementation notes.