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Open-Source MCP servers

Production-ready MCP servers that extend AI capabilities through file access, database connections, API integrations, and other contextual services.

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9,443 servers. Last updated -

Matching MCP tools:

Matching MCP servers:

  • mcp-knowledge-graph

    shaneholloman
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    An improved implementation of persistent memory using a local knowledge graph with a customizable --memory-path. This lets Claude remember information about the user across chats.
    Last updated -
    9
    1,113
    652
    MIT License
    • Apple

  • Neo4j Knowledge Graph

    mjftw
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    Enables storage and retrieval of knowledge in a graph database format, allowing users to create, update, search, and delete entities and relationships in a Neo4j-powered knowledge graph through natural language.
    Last updated -
    3
    • Linux

  • Knowledge Graph Memory Server

    itseasy21
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    An implementation of persistent memory for Claude using a local knowledge graph, allowing the AI to remember information about users across conversations with customizable storage location.
    Last updated -
    11
    228
    54
    JavaScript
    MIT License
    • Apple

  • Knowledge Graph Memory Server

    modelcontextprotocol
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    A basic implementation of persistent memory using a local knowledge graph. This lets Claude remember information about the user across chats.
    Last updated -
    9
    71,166
    68,255
    MIT License
    • Apple
    • Linux

  • Knowledge Graph Memory Server

    yodakeisuke
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    This MCP server provides persistent memory integration for chat applications by utilizing a local knowledge graph to remember user information across interactions.
    Last updated -
    9
    71,166
    5

  • query_table

    wukan1986
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    A web scraper for financial table data that implements the Model Context Protocol, allowing users to query stock data from multiple Chinese financial websites including THS, TDX, and EastMoney.
    Last updated -
    35
    MIT License
    • Linux
    • Apple

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  • Knowledge Graph Memory Server

    AgentWong
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    A persistent memory implementation using a local knowledge graph that lets Claude remember information about users across conversations.
    Last updated -
    6
    MIT License

  • Knowledge Graph Builder

    rebots-online
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    Transforms text or web content into structured knowledge graphs using local AI models with MCP integration for persistent storage in Neo4j and Qdrant.
    Last updated -
    3

  • Ontology MCP

    bigdata-coss
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    A Model Context Protocol (MCP) server that connects GraphDB's SPARQL endpoints and Ollama models to Claude, enabling Claude to query and manipulate ontology data while leveraging various AI models.
    Last updated -
    28
    2
    MIT License
    • Apple
    • Linux

  • Knowledge Graph Memory Server

    T1nker-1220
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    Enhances user interaction through a persistent memory system that remembers information across chats and learns from past errors by utilizing a local knowledge graph and lesson management.
    Last updated -
    13
    71,166
    52
    MIT License

  • Knowledge Graph Memory Server

    bneil
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    Enhances the MCP memory server by implementing PouchDB for robust document storage and enabling the creation and management of a knowledge graph that captures interactions via language models.
    Last updated -
    4
    MIT License
    • Apple

  • Elasticsearch Knowledge Graph for MCP

    j3k0
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    Provides a scalable knowledge graph implementation for Model Context Protocol using Elasticsearch, enabling AI models to store and query information with advanced search capabilities, memory-like behavior, and multi-zone architecture.
    Last updated -
    20
    16

  • JSON Query MCP

    mgraczyk
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    A Model Context Protocol server for querying large JSON files using JSONPath expressions, enabling LLMs to efficiently search and extract information from large JSON data.
    Last updated -
    3
    7

  • MCP Vibe Coding Knowledge Graph

    sascodiego
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    A comprehensive Model Context Protocol server that integrates Vibe Coding methodology with Knowledge Graph technology for AI-assisted software development using Kuzu embedded database.
    Last updated -
    2
    • Apple
    • Linux

  • Knowledge MCP Server

    sven-borkert
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    Provides centralized knowledge management for projects, allowing users to store, search, and maintain project-specific knowledge that persists across sessions.
    Last updated -
    27
    2
    1
    MIT License
    • Apple

  • A Share MCP

    24mlight
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    A Model Context Protocol server providing tools for querying A-share stock market data, including historical prices, financial reports, market indices, and macroeconomic indicators.
    Last updated -
    27
    424
    MIT License

  • Dune Query MCP

    olaxbt
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    A bridge that connects Dune Analytics blockchain data to AI applications through Model Control Protocol, allowing LLMs to access on-chain data via natural language interactions.
    Last updated -
    8
    • Linux
    • Apple

  • Database Query MCP

    NewToolAI
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    A versatile tool that enables querying and exporting data from multiple relational databases (MySQL, PostgreSQL, Oracle, SQLite, etc.) in read-only mode for data safety.
    Last updated -
    6
    Apache 2.0

  • MCP Blockchain Query Server

    pavel-bc
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    A Model Context Protocol server providing tools for querying Bitcoin blockchain data via Blockchain Data and Query APIs, supporting various BTC information retrieval functions.
    Last updated -
    1
    • Linux
    • Apple

  • MCP DuckDB Knowledge Graph Memory Server

    IzumiSy
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    A memory server for Claude that stores and retrieves knowledge graph data in DuckDB, enhancing performance and query capabilities for conversations with persistent user information.
    Last updated -
    8
    4
    45
    MIT License
    • Apple

  • MCP Microsoft Graph Server

    tcpatter
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    Provides secure access to Microsoft Entra ID (Azure AD) resources including users, devices, and applications through Microsoft Graph API. Enables querying organizational data with comprehensive audit logging to Azure Blob Storage.
    Last updated -

  • YouTube Knowledge MCP

    efikuta
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    Transforms YouTube into a queryable knowledge source with search, video details, transcript analysis, and AI-powered tools for summaries, learning paths, and knowledge graphs. Features quota-aware API access with caching and optional OpenAI/Anthropic integration for advanced content analysis.
    Last updated -
    1

  • Narrative Graph MCP

    angrysky56
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    A Model Context Protocol server implementing the Random Tree Model for encoding, compressing, and recalling narrative information across different levels of abstraction with configurable cognitive parameters.
    Last updated -
    4

  • Knowledge Base MCP Server

    Leon4s4
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    A mem0-like memory system for GitHub Copilot that provides persistent knowledge storage and retrieval capabilities using local ChromaDB.
    Last updated -
    MIT License

  • A-Share MCP Server

    24mlight
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    license
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    A Model Context Protocol server focused on China's A-share stock market that provides data on stocks, financials, market indices, and macroeconomic indicators.
    Last updated -
    27
    424
    MIT License

  • PolyNeural.ai Knowledge Graph MCP Bundleofficial

    PolyNeural-ai
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    Provides AI agents with persistent memory and knowledge management through a comprehensive knowledge graph platform. Enables storing, searching, and managing entities, relationships, and observations with advanced features like trending analysis and smart ranking.
    Last updated -
    1

  • Dify Knowledge MCP Server

    liiklin
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    A Model Context Protocol server that enables AI assistants like Cursor to directly query and retrieve information from Dify knowledge bases through natural language.
    Last updated -
    2
    2
    1
    • Linux
    • Apple

  • MCP Neo4j Knowledge Graph Memory Server

    JovanHsu
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    Enhanced knowledge graph memory server for AI assistants that uses Neo4j as the backend storage engine, enabling powerful graph queries and efficient storage of user interaction information with full MCP protocol compatibility.
    Last updated -
    16
    MIT License

  • Knowledge MCP Service

    vietnama10
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    Enables AI-powered document analysis and querying for project documentation using vector embeddings stored in Redis. Supports document upload, context-aware Q\&A, automatic test case generation, and requirements traceability through OpenAI integration.
    Last updated -
    637

  • Azure Topology Graph MCP Server

    dhippley
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    Enables exploration and analysis of Azure infrastructure by querying Azure Resource Graph, ARM, and Network Watcher APIs to create interactive topology maps. Provides tools for searching resources, discovering relationships, finding connectivity paths, and visualizing complete Azure infrastructure topologies.
    Last updated -

  • PostgreSQL Query MCP Server

    RathodDarshil
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    A secure Model Context Protocol server that allows Claude to execute read-only SQL queries against a PostgreSQL database, enabling natural language interaction with database data.
    Last updated -
    1
    • Apple