Overview
This MCP server enables Claude Desktop to interact with a Neo4j graph database by exposing a set of tools that execute Cypher queries, create nodes, and create relationships. By default it connects to the 'neo4j' database, with Neo4j Enterprise support to target a specific database using the NEO4J_DATABASE environment variable. Configuration requires NEO4J_URI (default bolt://localhost:7687), NEO4J_USERNAME (default neo4j), NEO4J_PASSWORD (required), and optional NEO4J_DATABASE (default neo4j). It exposes tools to execute Cypher queries, create nodes, and create relationships, with parameterized inputs to prevent injection and structured results. The 'execute_query' tool handles all Cypher types (READ/CREATE/UPDATE/DELETE); 'create_node' creates a node with labels and properties and returns the internal ID; 'create_relationship' creates a relationship between two existing nodes with a specified type, direction, and properties, requiring node IDs. Quick Start shows npx usage and Claude Desktop JSON config. For development, clone, install, and build; optional Smithery installation. Usage examples demonstrate connecting to a specific database, querying data, creating nodes, and forming relationships through natural language.
Features
Neo4j Enterprise Support
Supports connecting to specific databases in Neo4j Enterprise Edition; defaults to 'neo4j' and allows overriding via NEO4J_DATABASE.
execute_query tool
Executes Cypher queries on the Neo4j database; supports all query types (READ, CREATE, UPDATE, DELETE); returns structured results; supports parameterized inputs to prevent injection.
create_node tool
Creates a new node with labels and properties; returns the created node with its internal ID; supports all Neo4j data types for properties.
create_relationship tool
Creates a relationship between two existing nodes; specifies relationship type and direction; accepts properties; requires source and target node IDs.
Claude Desktop integration
Enables graph database operations to be performed via natural language interactions in Claude Desktop.
Who Is This For?
- Developers:Integrate Neo4j with Claude Desktop to query and mutate graphs using natural language.
- Data Engineers:Build analytics by issuing natural language Cypher queries through the MCP server.
- Neo4j Admins:Manage multiple databases and graph schemas via natural language operations.
