Best Neo4j MCP Servers
Neo4j is a graph database management system developed by Neo4j, Inc. It is a native graph database that stores data in nodes connected by relationships, providing an efficient way to query connected data.
Why this server?
Enables Neo4j as a graph-database sink for HKEx filings, including optional graph links between companies and filings.
AlicenseAqualityAmaintenanceA read-only MCP server so AI agents can query the corpus or the live site.212275 PyPI16MITWhy this server?
Provides an optional Neo4j backend for storing and querying the code property graph, enabling graph database capabilities.

mcp-reposkeinofficial
AlicenseAqualityAmaintenanceDeterministic code-graph (GraphRAG) over your repo for LLM agents — local-first, git-native, zero-infra, served via MCP. Python, TS/JS, Rust, Go, Java, C#.812Apache 2.0Why this server?
Can be combined with Neo4j MCP server as mentioned in the tutorial for building a knowledge graph assistant

Tavily MCP Serverofficial
AlicenseAqualityDmaintenanceThis server enables AI systems to integrate with Tavily's search and data extraction tools, providing real-time web information access and domain-specific searches.423,680 npm2,417MITWhy this server?
Provides Cypher query access to a local Reactome Neo4j graph database, enabling curation and graph-based exploration of pathway data.

reactome-mcpofficial
AlicenseBqualityCmaintenanceEnables AI assistants to search, browse, analyze, and export biological pathway data from Reactome through natural language.56443 npm6Apache 2.0Why this server?
Supports the Cypher query language, allowing graph database interactions compatible with Neo4j.
AlicenseAqualityAmaintenanceArcadeDB Multi-Model Database, one DBMS that supports SQL, Cypher, Gremlin, HTTP/JSON, MongoDB and Redis. ArcadeDB is a conceptual fork of OrientDB, the first Multi-Model DBMS. ArcadeDB supports Vector Embeddings.101,196Apache 2.0Why this server?
Allows interaction with a local Neo4j graph database containing PDBe-KB data, enabling read-only Cypher queries to explore molecular interactions and relationships in the Protein Data Bank.

PDBe MCP Serversofficial
AlicenseBqualityAmaintenanceProvides seamless access to the Protein Data Bank in Europe (PDBe) API and search capabilities, enabling AI clients to query protein structures, perform advanced searches, and retrieve structural biology data.3340Apache 2.0Why this server?
Exports the code graph in Cypher format for Neo4j, enabling the map to be loaded into a Neo4j database for further graph-based analysis.
AlicenseAqualityAmaintenanceEnables agents to explore a codebase as a graph via MCP, searching for relevant functions and their connections, and retrieving cited code chunks with callers, callees, and neighbours.169194 PyPI9MITWhy this server?
Search entity relationships and retrieve graph memory from a Neo4j database.

mem0-mcpofficial
AlicenseAqualityCmaintenanceSelf-hosted Mem0 MCP server integrating Qdrant, Neo4j, and Ollama for semantic memory search, graph entity relationships, and memory management via OpenMemory API.64MITWhy this server?
Integrates with Neo4j graph database for storing architectural relationships via call graphs, enabling structural navigation and reverse dependency analysis.
AlicenseAqualityAmaintenanceKnot is a semantic and structural codebase indexer designed for AI coding agents and developers navigating large projects. It combines vector search and graph traversal to find code by meaning, analyze impact via reverse dependencies, and explore file architectures.67MIT