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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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11,221 servers. Last updated -

Matching MCP tools:

Matching MCP servers:

  • Semantic D1 MCPofficial

    semanticintent
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    Enables AI-assisted analysis and optimization of Cloudflare D1 databases through comprehensive schema introspection, relationship mapping, validation, and optimization recommendations. Demonstrates semantic intent patterns with hexagonal architecture for maintainable database development workflows.
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    4
    2
    MIT License

  • Local RAG

    shinpr
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    Privacy-first local document search using semantic search. Runs entirely on your machine with no cloud services, supporting PDF, DOCX, TXT, and Markdown files.
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    373
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    MIT License

  • Bitrefill Search and Shopofficial

    bitrefill
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    This MCP wraps Bitrefill public API to allow agents to search for products and shop using cryptocurrencies like Bitcoin, Ethereum, Solana, and many more.
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    4
    29
    5
    MIT License
    • Apple

  • Obsidian Semantic MCP Server

    aaronsb
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    A server that consolidates 21+ Obsidian tools into 5 intelligent operations (vault, edit, view, workflow, system) with contextual workflow hints to help AI agents effectively interact with Obsidian.
    Last updated -
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    23
    MIT License
    • Apple

  • Seroost Search MCP Server

    Parado-xy
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    Enables AI agents to perform semantic code search across entire codebases using natural language queries. Provides fast indexing and ranked search results with line numbers and file paths through the Seroost search engine.
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    5
    1

  • MCP RAG

    kalicyh
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    Intelligent knowledge base system that enables users to process documents in 25+ formats, perform semantic search and Q\&A through vector retrieval. Supports multiple AI models including OpenAI and DouBao with local processing capabilities.
    Last updated -
    10
    3

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  • Systems MCP

    lethain
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    An MCP server that allows users to run and visualize systems models using the lethain:systems library, including capabilities to run model specifications and load systems documentation into the context window.
    Last updated -
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    14
    MIT License
    • Apple

  • Memory Custom

    BRO3886
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    A customized MCP memory server that enables creation and management of a knowledge graph with features like custom memory paths and timestamping for capturing interactions via language models.
    Last updated -
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    4
    MIT License
    • Apple

  • basic-memory

    basicmachines-co
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    Basic Memory is a knowledge management system that allows you to build a persistent semantic graph from conversations with AI assistants. All knowledge is stored in standard Markdown files on your computer, giving you full control and ownership of your data. Integrates directly with Obsidan.md
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    2,026
    AGPL 3.0
    • Apple

  • mcp-memory-libsql

    spences10
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    A high-performance MCP server utilizing libSQL for persistent memory and vector search capabilities, enabling efficient entity management and semantic knowledge storage.
    Last updated -
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    253
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    MIT License

  • MCP Docs RAG Server

    kazuph
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    A TypeScript MCP server that allows querying documents using LLMs with context from locally stored repositories and text files through a RAG (Retrieval-Augmented Generation) system.
    Last updated -
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    12
    • Apple
    • Linux

  • Semantic Pen MCP Server

    pushkarsingh32
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    The official MCP server for Semantic Pen - an advanced AI article generator and SEO content writer. Create, manage, and optimize SEO-friendly articles directly from Claude Code and Cursor Windsurf with powerful AI automation.
    Last updated -
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    7
    2

  • MCP RAG

    santis84
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    A complete MCP server for Retrieval-Augmented Generation with file management and vector memory for agents. Supports multiple document formats (PDF, DOCX, TXT, MD, CSV, JSON) with semantic search using Hugging Face embeddings and ChromaDB for efficient vector storage.
    Last updated -
    11
    2
    MIT License

  • Calibre RAG MCP Server

    ispyridis
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    Enables semantic search and contextual conversations with your Calibre ebook library using vector-based RAG technology. Supports project-based organization, multi-format book processing, and OCR capabilities for enhanced content extraction and retrieval.
    Last updated -
    7

  • MCP Memory Service

    doobidoo
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    Provides semantic memory and persistent storage for Claude, leveraging ChromaDB and sentence transformers for enhanced search and retrieval capabilities.
    Last updated -
    3
    816
    Apache 2.0
    • Linux

  • MCP-RAG

    seanshin0214
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    Turns Claude Desktop into a personal document question-answering system using local vector search. Index PDF, TXT, and Markdown documents into collections and get answers based strictly on your documents with zero hallucination.
    Last updated -
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    MIT License
    • Apple
    • Linux

  • Semantic Context MCPofficial

    semanticintent
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    Enables AI assistants to save, load, and search conversation context with AI-powered summarization and auto-tagging. Demonstrates semantic intent patterns and hexagonal architecture for maintainable AI-assisted development.
    Last updated -
    1
    MIT License

  • Memory MCP

    HamzaFarhan
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    A knowledge-graph-based memory system for AI agents that enables persistent information storage between conversations.
    Last updated -
    6

  • Memory Engineering MCP

    romiluz13
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    Provides persistent memory and semantic code understanding for AI assistants using MongoDB Atlas Vector Search. Enables intelligent code search, memory management, and pattern detection across codebases with complete semantic context preservation.
    Last updated -
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    11
    MIT License

  • MCP Memory Server

    sdimitrov
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    Implements long-term memory capabilities for AI assistants using PostgreSQL with pgvector for efficient vector similarity search, enabling semantic retrieval of stored information.
    Last updated -
    43
    • Apple
    • Linux

  • MCP Memory

    tienngang
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    Enables MCP clients to remember user information, preferences, and behaviors across conversations using vector search technology. Built on Cloudflare infrastructure with AI-powered semantic search to find relevant memories based on meaning rather than keywords.
    Last updated -

  • MCP Memory

    jonaheaton
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    Enables MCP clients to remember user information, preferences, and behaviors across conversations using vector search technology. Built on Cloudflare infrastructure with persistent storage and semantic similarity matching.
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  • RAG-MCP

    Luxter77
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    A Python server that enables retrieval-augmented generation through semantic, question/answer, and style search modalities using PostgreSQL and pgvector for embedding storage and retrieval.
    Last updated -
    2
    Apache 2.0

  • RAG_MCP

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    A Retrieval-Augmented Generation server that enables semantic PDF search with OCR capabilities, allowing users to query document content through any MCP client and receive intelligent answers.

  • RAG Information Retriever

    ChandrahaasJ
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    An MCP server that implements Retrieval-Augmented Generation to efficiently retrieve and process important information from various sources, providing accurate and contextually relevant responses.
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  • Codebase RAG MCP Server

    allentcm
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    Enables semantic search and retrieval of code files using embeddings stored in PostgreSQL. Supports intelligent codebase exploration through natural language queries, file listing, and content retrieval.
    Last updated -
    6

  • DuckDB-RAG-MCP-Sample

    nananaman
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    An MCP server that enables RAG (Retrieval-Augmented Generation) on markdown documents by converting them to embedding vectors and performing vector search using DuckDB.
    Last updated -
    3
    Apache 2.0
    • Apple

  • Model Context Protocol Server

    arkeodev
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    Provides a standardized protocol for tool invocation, enabling an AI system to search the web, retrieve information, and provide relevant answers through integration with LangChain, RAG, and Ollama.
    Last updated -
    2
    MIT License

  • dbt Semantic Layer MCP Server

    TommyBez
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    A server that enables querying the dbt Semantic Layer through natural language conversations with Claude Desktop and other AI assistants, allowing users to discover metrics, create queries, analyze data, and visualize results.
    Last updated -
    11
    MIT License

  • RAG Memory MCP

    ttommyth
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    An advanced MCP server providing RAG-enabled memory through a knowledge graph with vector search capabilities, enabling intelligent information storage, semantic retrieval, and document processing.
    Last updated -
    35
    32
    • Apple
    • Linux

  • Continuo Memory System

    GtOkAi
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    Enables persistent memory and semantic search for development workflows with hierarchical compression. Store and retrieve development knowledge across IDE sessions using natural language queries, circumventing context window limitations.
    Last updated -
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  • MCP Memory Server

    WebSurfinMurf
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    Enables AI assistants to store and retrieve long-term memories using PostgreSQL with vector similarity search. Supports semantic memory operations, tagging, and real-time updates for persistent learning across conversations.
    Last updated -