neo4j-fastmcp-server

artur-nohup/neo4j-fastmcp-server

3.2

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The Neo4j FastMCP Server with Descope Authentication is a production-ready remote Model Context Protocol (MCP) server designed for enterprise-grade authentication and seamless integration with Claude.ai and other MCP clients.

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Neo4j FastMCP Server with Descope Authentication

A production-ready remote Model Context Protocol (MCP) server with enterprise-grade authentication powered by Descope. Fully compatible with Claude.ai and other MCP clients.

Docker Image License: MIT

🚀 Features

  • 🔐 Enterprise Authentication: OAuth 2.1 with PKCE + API key authentication via Descope
  • 🎯 Claude.ai Ready: Full OAuth flow integration for Claude's custom integrations
  • 🧠 Neo4j Knowledge Graph: Persistent memory storage with full-text search
  • 🛡️ Fine-grained Permissions: MCP-specific scopes and role-based access control
  • 📊 Session Management: Automatic token refresh and session validation
  • 🐳 Production Ready: Docker support with health checks and monitoring
  • ⚡ FastMCP Framework: Built on the latest FastMCP TypeScript framework

🎯 Perfect for Claude.ai Integration

This server is specifically designed to work with Claude.ai's custom integrations feature:

  1. OAuth 2.1 Compliance: Full PKCE support for secure authentication
  2. Remote MCP Protocol: HTTP streaming transport for cloud deployment
  3. Scope-based Permissions: Fine-grained access control
  4. Session Management: Automatic token handling and refresh
  5. Production Security: Enterprise-grade authentication via Descope

🚀 Quick Start

1. Clone and Setup

git clone https://github.com/artur-nohup/neo4j-fastmcp-server.git
cd neo4j-fastmcp-server
npm install
cp .env.example .env

2. Configure Environment

Edit .env with your configuration:

# Descope Configuration (REQUIRED)
DESCOPE_PROJECT_ID=your-descope-project-id
DESCOPE_MANAGEMENT_KEY=your-management-key

# Neo4j Configuration (REQUIRED)
NEO4J_URI=bolt://localhost:7687
NEO4J_USERNAME=neo4j
NEO4J_PASSWORD=your-password

# OAuth Configuration (REQUIRED for Claude.ai)
OAUTH_CLIENT_ID=your-oauth-client-id
OAUTH_CLIENT_SECRET=your-oauth-client-secret
OAUTH_REDIRECT_URI=http://localhost:8081/oauth/callback

# Session Security
SESSION_SECRET=your-secure-session-secret

3. Start Development Server

# Start development server
npm run dev

# Or run tests
npm run test

# The server starts on:
# - MCP Server: http://localhost:8081/stream
# - OAuth Server: http://localhost:8082

4. Claude.ai Integration

  1. In Claude.ai, go to Settings > Integrations
  2. Click Add Integration
  3. Enter MCP Server URL: http://localhost:8081/stream
  4. Complete the OAuth flow when prompted
  5. Start using your Neo4j knowledge graph in Claude!

🔐 Authentication Methods

OAuth 2.1 Flow (for Claude.ai)

Perfect for interactive clients like Claude.ai with full PKCE support.

API Key Authentication

Ideal for programmatic access and automation:

# Create API key (admin access required)
curl -X POST http://localhost:8082/admin/api-keys \
  -H "Authorization: Bearer <oauth-token>" \
  -d '{"name":"my-app","permissions":["mcp:read","mcp:write"]}'

# Use API key
curl -X POST http://localhost:8081/stream \
  -H "X-API-Key: <your-api-key>" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

🎛️ Available Tools

10 MCP Tools with Permission-based Access

  1. create_entities - Create knowledge graph entities
  2. create_relations - Create relationships between entities
  3. add_observations - Add observations to entities
  4. delete_entities - Remove entities and relations
  5. delete_observations - Remove specific observations
  6. delete_relations - Remove relationships
  7. read_graph - Read entire knowledge graph
  8. search_nodes - Full-text search across the graph
  9. find_nodes - Find specific entities by name
  10. health_check - Server and Neo4j health status

Permission Scopes

  • mcp:read - Read operations and graph queries
  • mcp:write - Create, update, and delete operations
  • mcp:admin - Administrative operations and health checks

🧪 Testing & Development

MCP Inspector Testing

# Start test server
npm run test

# In another terminal, start MCP Inspector
npx @modelcontextprotocol/inspector

# Configure connection:
# URL: http://localhost:8081/stream
# Auth: Use OAuth flow or API key

cURL Testing

# Test with OAuth token
curl -X POST http://localhost:8081/stream \
  -H "Authorization: Bearer <oauth-token>" \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

# Test with API key  
curl -X POST http://localhost:8081/stream \
  -H "X-API-Key: <api-key>" \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

🐳 Docker Deployment

Using Pre-built Image

docker pull arturrenzenbrink/neo4j-fastmcp-server:latest

docker run -d \
  --name neo4j-mcp-server \
  -p 8081:8081 \
  -p 8082:8082 \
  -e DESCOPE_PROJECT_ID="your-project-id" \
  -e DESCOPE_MANAGEMENT_KEY="your-management-key" \
  -e NEO4J_URI="bolt://your-neo4j:7687" \
  -e NEO4J_USERNAME="neo4j" \
  -e NEO4J_PASSWORD="your-password" \
  -e SESSION_SECRET="your-session-secret" \
  arturrenzenbrink/neo4j-fastmcp-server:latest

Docker Compose

# Use the included docker-compose.yml
docker compose up -d

📚 Documentation

  • - Complete Descope setup and configuration
  • - Full API documentation with examples
  • - Comprehensive testing instructions

🏗️ Architecture

┌─────────────────┐    ┌─────────────────┐    ┌─────────────────┐
│   Claude.ai     │───▶│  OAuth Server   │───▶│    Descope      │
│                 │    │  (Port 8082)    │    │   Platform      │
│ - Custom MCP    │    │                 │    │                 │
│ - OAuth Client  │    │ - Authorization │    │ - User Identity │
│ - Token Mgmt    │    │ - Token Exchange│    │ - OAuth Providers│
└─────────────────┘    │ - PKCE Support  │    │ - Session Mgmt  │
           │            └─────────────────┘    └─────────────────┘
           ▼
┌─────────────────┐    ┌─────────────────┐    ┌─────────────────┐
│   MCP Server    │───▶│   FastMCP Auth  │───▶│   Neo4j DB     │
│  (Port 8081)    │    │                 │    │                 │
│                 │    │ - Session Val   │    │ - Knowledge     │
│ - Stream API    │    │ - Scope Check   │    │   Graph         │
│ - Tool Execution│    │ - Permissions   │    │ - Full-text     │
│ - Health Checks │    │ - Audit Logs    │    │   Search        │
└─────────────────┘    └─────────────────┘    └─────────────────┘

🎯 Use Cases

Claude.ai Knowledge Graph

Add custom MCP integration → Complete OAuth flow → Claude gains persistent memory

Enterprise Knowledge Management

Deploy with company OAuth → Teams authenticate with existing credentials → Build shared knowledge graphs

AI Agent Memory

Agents authenticate via API keys → Store learned information → Search and retrieve context across interactions

🤝 Contributing

  1. Fork the repository
  2. Create a feature branch
  3. Implement your changes
  4. Add tests and documentation
  5. Submit a pull request

📄 License

MIT License - see LICENSE file for details.

🆘 Support

Ready to enhance Claude.ai with your own knowledge graph? 🚀

The Neo4j FastMCP Server with Descope provides enterprise-grade authentication that works seamlessly with Claude.ai while maintaining the flexibility to support any MCP client. Perfect for building persistent AI memory, knowledge management systems, and contextual AI applications.