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Expert Registry MCP Server

by agentience
  • Linux
  • Apple

Expert Registry MCP Server

Last Updated: 2025-06-30

A high-performance MCP server for expert discovery, registration, and context injection built with FastMCP v2, featuring vector and graph database integration for enhanced semantic search and relationship modeling.

Features

  • 🚀 High Performance: Multi-layer caching with vector indices for sub-millisecond queries
  • 📁 File-Based Updates: Hot reload on registry/context file changes
  • 🔍 Semantic Search: Vector database integration for meaning-based expert discovery
  • 🔗 Relationship Modeling: Graph database for expert networks and team formation
  • 💉 Context Injection: AI-powered prompt enhancement with expert knowledge
  • 📊 Analytics: Performance tracking with collaborative filtering
  • 🧠 Hybrid Discovery: Combined vector similarity and graph connectivity scoring
  • 🐍 Python-First: Built with FastMCP v2 for clean, Pythonic code

Installation

The easiest way to run the Expert Registry MCP server is using Docker:

# Build and deploy locally ./scripts/build.sh ./scripts/deploy.sh # Or use pre-built image from GitHub Container Registry docker pull ghcr.io/agentience/expert-registry-mcp:latest

Features:

  • 🐳 Single container service for multiple MCP clients
  • 📦 Expert contexts and registry mapped to host for easy editing
  • 🔄 Hot reload support when files change on host
  • 🌐 SSE transport for client connections
  • 🗄️ Includes Neo4j database setup
  • 🚀 Production-ready with health checks

See DOCKER.md for complete deployment guide.

Local Development

Using uv (recommended):

# Create virtual environment and install uv venv uv pip install -e . # Or install directly uv pip install expert-registry-mcp

Using pip:

pip install expert-registry-mcp

Database Setup

Vector Database (ChromaDB - Embedded)
# ChromaDB is embedded, no separate installation needed # It will create a vector-db directory automatically
Graph Database (Neo4j)
# Option 1: Docker (recommended) docker run -d --name neo4j \ -p 7474:7474 -p 7687:7687 \ -e NEO4J_AUTH=neo4j/password \ neo4j:latest # Option 2: Local installation # Download from https://neo4j.com/download/

Quick Start

  1. Set up your expert system directory structure:
expert-system/ ├── registry/ │ └── expert-registry.json ├── expert-contexts/ │ ├── aws-amplify-gen2.md │ ├── aws-cloudscape.md │ └── ... └── performance/ └── metrics.json
  1. Configure environment:
export EXPERT_SYSTEM_PATH=/path/to/expert-system export NEO4J_URI=bolt://localhost:7687 export NEO4J_PASSWORD=password
  1. Run the server:
# Using FastMCP CLI fastmcp run expert-registry-mcp # Or using Python python -m expert_registry_mcp.server

Claude Desktop Configuration

Add to your Claude Desktop configuration:

{ "mcpServers": { "expert-registry": { "command": "uv", "args": ["run", "expert-registry-mcp"], "env": { "EXPERT_SYSTEM_PATH": "/path/to/expert-system", "NEO4J_URI": "bolt://localhost:7687", "NEO4J_PASSWORD": "password" } } } }

Usage Examples

Basic Expert Discovery

# Detect technologies in your project technologies = await expert_detect_technologies( scan_paths=["./src", "./package.json"] ) # Select the best expert with hybrid search result = await expert_smart_discover( context={ "description": "Refactor authentication system using AWS Amplify", "technologies": technologies.technologies, "constraints": ["maintain backward compatibility"], "preferred_strategy": "single" } )

Context Injection

# Load expert context context = await expert_load_context( expert_id=result.expert.id ) # Inject into prompt enhanced_prompt = await expert_inject_context( prompt="Refactor the authentication system", expert_id=result.expert.id, injection_points=["constraints", "patterns", "quality-criteria"] )

Performance Tracking

# Track usage await expert_track_usage( expert_id=result.expert.id, task_id="auth-refactor-001", outcome={ "success": True, "adherence_score": 9.5, "task_type": "refactoring" } ) # Get analytics analytics = await expert_get_analytics( expert_id=result.expert.id )

Available Tools

Registry Management

  • expert_registry_list - List experts with filtering
  • expert_registry_get - Get expert details
  • expert_registry_search - Search experts by query

Expert Selection

  • expert_detect_technologies - Detect project technologies
  • expert_select_optimal - Select best expert for task
  • expert_assess_capability - Assess expert capability
  • expert_smart_discover - AI-powered hybrid search (vector + graph)
  • expert_semantic_search - Search using natural language
  • expert_find_similar - Find similar experts

Graph Operations

  • expert_explore_network - Explore expert relationships
  • expert_find_combinations - Find complementary expert teams

Context Operations

  • expert_load_context - Load expert knowledge
  • expert_inject_context - Enhance prompts with expertise

Analytics

  • expert_track_usage - Record expert performance
  • expert_get_analytics - Get performance metrics

Expert Registry Format

{ "version": "1.0.0", "last_updated": "2025-06-30T00:00:00Z", "experts": [ { "id": "aws-amplify-gen2", "name": "AWS Amplify Gen 2 Expert", "version": "1.0.0", "description": "Expert in AWS Amplify Gen 2 development", "domains": ["backend", "cloud", "serverless"], "specializations": [ { "technology": "AWS Amplify Gen 2", "frameworks": ["AWS CDK", "TypeScript"], "expertise_level": "expert" } ], "workflow_compatibility": { "feature": 0.95, "bug-fix": 0.85, "refactoring": 0.80, "investigation": 0.70, "article": 0.60 }, "constraints": [ "Use TypeScript-first approach", "Follow AWS Well-Architected Framework" ], "patterns": [ "Infrastructure as Code", "Serverless-first architecture" ], "quality_standards": [ "100% type safety", "Comprehensive error handling" ] } ] }

Expert Context Format

Expert context files are markdown documents in expert-contexts/:

# AWS Amplify Gen 2 Expert Context ## Constraints - Use TypeScript for all backend code - Follow AWS Well-Architected Framework principles - Implement proper error handling and logging ## Patterns - Infrastructure as Code using CDK - Serverless-first architecture - Event-driven communication ## Quality Standards - 100% TypeScript type coverage - Comprehensive error handling - Unit test coverage > 80%

Development

Setup Development Environment

# Clone repository git clone https://github.com/agentience/expert-registry-mcp cd expert-registry-mcp # Create virtual environment with uv uv venv source .venv/bin/activate # or .venv\Scripts\activate on Windows # Install in development mode uv pip install -e ".[dev]"

Run Tests

# Run all tests pytest # Run with coverage pytest --cov=expert_registry_mcp # Run specific test file pytest tests/test_registry.py

Code Quality

# Format code black src tests # Lint code ruff check src tests # Type checking mypy src

Architecture

Multi-Layer Caching

  • Registry Cache: 24-hour TTL for expert definitions
  • Vector Cache: Embeddings cached until expert updates
  • Graph Cache: Relationship queries cached for 10 minutes
  • Selection Cache: 5-minute TTL for technology detection
  • Context Cache: LRU cache for expert contexts (50 entries)

Database Integration

  • ChromaDB: Embedded vector database for semantic search
    • Multiple collections for different embedding types
    • Automatic embedding generation with sentence-transformers
  • Neo4j: Graph database for relationship modeling
    • Expert-Technology-Task relationships
    • Team synergy calculations
    • Evolution tracking

Performance Features

  • Vector Indices: Annoy indices for ultra-fast similarity search
  • Precomputed Combinations: Common expert pairs cached
  • Batch Operations: Efficient bulk processing
  • Smart Invalidation: Targeted cache updates

File Watching

  • Uses watchdog for cross-platform file monitoring
  • Automatic registry reload and database sync
  • No server restart required for updates

Troubleshooting

Common Issues

  1. Expert not found
    • Verify expert ID in registry
    • Check file paths are correct
    • Ensure registry JSON is valid
  2. Context file missing
    • Check expert-contexts directory
    • Verify filename matches expert ID
    • Ensure .md extension
  3. Cache not updating
    • File watcher may need restart
    • Check file permissions
    • Verify EXPERT_SYSTEM_PATH

Debug Mode

Enable debug logging:

export FASTMCP_DEBUG=1 expert-registry-mcp

Advanced Features

The system uses ChromaDB to enable natural language queries:

# Find experts by meaning, not just keywords results = await expert_semantic_search( query="implement secure authentication with cloud integration", search_mode="hybrid" )

Relationship Exploration

Neo4j powers sophisticated relationship queries:

# Explore expert networks network = await expert_explore_network( start_expert_id="aws-amplify-gen2", depth=2, relationship_types=["SPECIALIZES_IN", "COMPATIBLE_WITH"] )

Team Formation

AI-powered team composition:

# Find complementary expert teams teams = await expert_find_combinations( requirements=["AWS Amplify", "React", "DynamoDB"], team_size=3 )

Contributing

  1. Fork the repository
  2. Create your feature branch (git checkout -b feature/amazing-feature)
  3. Run tests and linting
  4. Commit your changes (git commit -m 'Add amazing feature')
  5. Push to the branch (git push origin feature/amazing-feature)
  6. Open a Pull Request

License

MIT License - see LICENSE file for details

Support

  • Documentation: https://github.com/agentience/expert-registry-mcp
  • Issues: https://github.com/agentience/expert-registry-mcp/issues
  • Discussions: https://github.com/agentience/expert-registry-mcp/discussions

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