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"List of Easy-to-Use Free MCP Servers for Proof of Concept Development" matching MCP servers:

  • 5arz Proof-of-Human by LumiRx

    5arz Proof-of-Humanofficial

    LumiRx
    A
    license
    -
    quality
    C
    maintenance
    Enables agents to prove and verify that a real, unique human performed an action, issuing machine-readable signed credentials with public verification.
    Apache 2.0

  • AI Proof of Us MCP Server

    0xddneto
    A
    license
    A
    quality
    A
    maintenance
    Records privacy-preserving receipts for AI-assisted tasks and enables optional onchain reward claiming via AIPOU tokens. Integrates with MCP-compatible clients like Claude and Cursor.
    9
    3
    MIT

  • of-mcp

    ThiTheGoat
    A
    license
    A
    quality
    C
    maintenance
    Provides MCP tools to search, retrieve, and answer questions from the public Open Finance Brasil Confluence documentation using BM25-based local indexing.
    4
    MIT

  • MCP of MCPs

    eliavamar
    A
    license
    -
    quality
    D
    maintenance
    A meta-server that aggregates multiple MCP servers into a single interface, reducing token usage by 98%+ through progressive tool discovery and direct code execution that processes data between tools without consuming context window space.
    16
    10
    Apache 2.0

  • Oracle of Nethys

    fbonds
    F
    license
    -
    quality
    B
    maintenance
    Provides search and retrieval over a local database of Pathfinder 2e rules. Enables Claude Code to answer rules questions with cited, accurate answers from fetched entries.

  • library-of-babel-mcp

    slaufer
    A
    license
    A
    quality
    C
    maintenance
    An MCP server that provides access to the Library of Babel, allowing users to retrieve exact page contents by address, search for text to find its location, and generate random pages.
    4
    151
    ISC

  • world-of-claudecraft-mcp

    u2
    F
    license
    A
    quality
    C
    maintenance
    An MCP server adapter that allows LLM agents to autonomously play World of ClaudeCraft by wrapping the game's headless environment as MCP tools for state reading and action execution.
    7

  • Atom of Thoughts

    dioptx
    A
    license
    A
    quality
    D
    maintenance
    Structured reasoning MCP server that decomposes problems into atomic steps (premise, reasoning, hypothesis, verification, conclusion) with confidence scoring, live visualization, and approval feedback.
    3
    79
    MIT

  • doctor-of-credit-mcp

    monroedean
    F
    license
    A
    quality
    B
    maintenance
    An MCP server that lets AI clients search and retrieve Doctor of Credit articles, categories, and deals via flexible tools, interpreting article content at request time.
    8
    1

  • Chain of Draft Thinking

    bsmi021
    A
    license
    A
    quality
    D
    maintenance
    Chain of Draft Server is a powerful AI-driven tool that helps developers make better decisions through systematic, iterative refinement of thoughts and designs. It integrates seamlessly with popular AI agents and provides a structured approach to reasoning, API design, architecture decisions, code r
    1
    21
    24
    MIT

  • mcp-zen-of-languages

    Anselmoo
    A
    license
    A
    quality
    A
    maintenance
    Enables AI assistants and developers to analyze code for language-specific best practices and idiomatic patterns across programming languages, CI automation, and configuration formats.
    16
    2
    MIT

  • Clash of Clans MCP Server

    justinritchie
    A
    license
    -
    quality
    B
    maintenance
    Enables AI-assisted clan analysis for Clash of Clans by reading official API data and applying customizable rubrics for war grading, promotion screening, and carry-forward decisions.
    1
    MIT