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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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11,951 servers. Last updated -

Matching MCP tools:

Matching MCP servers:

  • Contextual MCP Serverofficial

    ContextualAI
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    A Model Context Protocol server that provides Retrieval-Augmented Generation capabilities using Contextual AI, enabling AI interfaces like Cursor IDE and Claude Desktop to query domain-specific knowledge with context-aware responses and source citations.
    Last updated -
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  • Code Reasoning MCP Server

    mettamatt
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    An enhanced sequential thinking tool optimized for programming tasks that helps break down complex coding problems into structured, self-auditing thought steps with branching and revision capabilities.
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    MIT License
    • Apple

  • Advanced Reasoning MCP Server

    angrysky56
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    An MCP server that enhances sequential thinking with meta-cognitive capabilities including confidence tracking, hypothesis testing, and organized memory storage through graph-based libraries and structured JSON documents.
    Last updated -
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    4
    MIT License

  • MCP Sequential Thinking Tools

    xinzhongyouhai
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    Guides problem-solving by breaking down complex problems into steps and recommending appropriate MCP tools for each stage, with confidence scores and rationales for tool suggestions.
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    26
    MIT License

  • MCP Advanced Reasoning Server

    AzDeltaQQ
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    A Model Context Protocol server that enhances Claude in Cursor AI with advanced reasoning capabilities including Monte Carlo Tree Search, Beam Search, R1 Transformer, and Hybrid Reasoning methods.
    Last updated -
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  • Smart-Thinking

    Leghis
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    A sophisticated MCP server that provides a multi-dimensional, adaptive reasoning framework for AI assistants, replacing linear reasoning with a graph-based architecture for more nuanced cognitive processes.
    Last updated -
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    MIT License
    • Apple
    • Linux

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  • MCP Tools for Obsidian

    jacksteamdev
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    A local MCP server that enables AI applications like Claude Desktop to securely access and work with Obsidian vaults, providing capabilities for reading notes, executing templates, and performing semantic searches.
    Last updated -
    455
    MIT License
    • Apple
    • Linux

  • CRASH - Cascaded Reasoning with Adaptive Step Handling

    nikkoxgonzales
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    Enables structured, iterative reasoning for complex problem-solving with features like confidence tracking, revision mechanisms, and branching support. Provides flexible validation and multiple output formats for systematic analysis and decision-making tasks.
    Last updated -
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    54
    MIT License
    • Linux
    • Apple

  • Gemini Thinking MCP Server

    falahgs
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    A Model Context Protocol (MCP) server implementation for the Google Gemini language model. This server allows Claude Desktop users to access the powerful reasoning capabilities of Gemini-2.0-flash-thinking-exp-01-21 model.
    Last updated -
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    MIT License

  • Reasoning Tool MCP Server

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    Implements Anthropic's 'reasoning' tool as an MCP server for Claude, providing a dedicated scratchpad for structured thinking that dramatically improves performance on complex problem-solving tasks.

  • Retrieval-Augmented Thinking MCP Server

    stat-guy
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    Enhances AI model capabilities with structured, retrieval-augmented thinking processes that enable dynamic thought chains, parallel exploration paths, and recursive refinement cycles for improved reasoning.
    Last updated -
    16
    MIT License
    • Apple

  • Unconventional-thinking MCP server

    stagsz
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    This is a MCP server that implements an unreasonable thinking system. It helps generate unconventional solutions: Generating unreasonable thoughts that challenge conventional wisdom. Creating branches of thinking in different directions
    Last updated -
    3
    25
    MIT License
    • Apple

  • Branch Thinking

    ssdeanx
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    An MCP server that enables managing multiple lines of thought with features like branch navigation, cross-references between related thoughts, and insight generation from key points.
    Last updated -
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    15
    MIT License
    • Apple

  • Database Tools for Claude AI

    elber-code
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    MCP server that allows Claude AI to interact directly with MySQL databases, enabling query execution and table information retrieval through natural language.
    Last updated -
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    6
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  • 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

  • Sequential Thinking MCP Server

    LangGPT
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    An MCP server that enables Claude to break down complex problems into manageable steps with support for revision and branching, facilitating dynamic and reflective problem-solving through a structured thinking process.
    Last updated -
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    6
    • Apple

  • Deep Code Reasoning MCP Server

    haasonsaas
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    Pairs Claude Code with Google's Gemini AI for complementary code analysis, enabling intelligent routing where Claude handles local-context operations while Gemini leverages its 1M token context for distributed system debugging and long-trace analysis.
    Last updated -
    10
    98
    MIT License

  • Memory MCP Server

    ideadesignmedia
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    SQLite-backed memory storage for MCP agents with optional semantic search via OpenAI embeddings, enabling agents to remember, recall, and manage contextual information across sessions.
    Last updated -
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    MIT License

  • Branch Thinking MCP Server

    m-siles
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    An MCP server for navigating thought processes using branches, supporting thought cross-references and priority tracking to enhance insight generation and structured idea exploration.
    Last updated -
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    43
    MIT License

  • Shannon Thinking MCP Server

    olaservo
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    A tool that implements Claude Shannon's problem-solving methodology to help break down complex problems into structured steps including problem definition, constraints, modeling, validation, and implementation.
    Last updated -
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    49
    MIT License

  • Sequential Thinking Multi-Agent System

    FradSer
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    An advanced MCP server that implements sophisticated sequential thinking using a coordinated team of specialized AI agents (Planner, Researcher, Analyzer, Critic, Synthesizer) to deeply analyze problems and provide high-quality, structured reasoning.
    Last updated -
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    269
    • Linux
    • Apple

  • MCP Memory

    julianorck
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    Enables AI assistants to remember user information and preferences across conversations using vector search technology. Built on Cloudflare infrastructure with isolated user namespaces for secure, persistent memory storage.
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  • Enhanced Sequential Thinking MCP Server

    new69toss
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    Enables structured problem-solving through sequential thinking stages with persistent storage and analysis. Helps break down complex problems into manageable cognitive steps while tracking progress and generating summaries of the entire thought process.
    Last updated -
    MIT License

  • mcp-structured-thinking

    Promptly-Technologies-LLC
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    A TypeScript Model Context Protocol (MCP) server to allow LLMs to programmatically construct mind maps to explore an idea space, with enforced "metacognitive" self-reflection.
    Last updated -
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    MIT License

  • MCP Memory Server

    jessefreitas
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    Provides persistent memory functionality for AI conversations by creating, managing and querying entities and relationships in a knowledge graph. Features SQLite storage, advanced search capabilities, and Windows auto-start integration for long-term AI memory retention.
    Last updated -
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    MIT License

  • 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

  • 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 -
    49
    • Apple
    • Linux

  • MCP AI Memory

    scanadi
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    Enables AI agents to store, retrieve, and manage contextual knowledge across sessions using semantic search with PostgreSQL and vector embeddings. Supports memory relationships, clustering, multi-agent isolation, and intelligent caching for persistent conversational context.
    Last updated -
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    41
    MIT License

  • 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
    883
    Apache 2.0
    • Linux

  • Memory Bank MCP

    movibe
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    Memory Bank Server provides a set of tools and resources for AI assistants to interact with Memory Banks. Memory Banks are structured repositories of information that help maintain context and track progress across multiple sessions.
    Last updated -
    101
    44
    MIT License