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"Examples of MCPs (Microservices Communication Protocols) That Do Not Require API Keys" matching MCP servers:

  • MCP of MCPs

    eliavamar
    A
    license
    Not graded
    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

  • agent-keys

    Gonzih
    A
    license
    A
    quality
    D
    maintenance
    An MCP server that lets AI agents autonomously acquire, store, verify, and manage API keys for various services.
    7
    10
    MIT

  • communication-mcp-server

    ajaysingh16601
    A
    license
    Not graded
    quality
    B
    maintenance
    MCP server that provides email communication tools (send email, health check, list providers) via SMTP, accessible over HTTP/SSE for remote AI clients like Claude Desktop.
    10
    MIT

  • Multi-MCPs

    TaylorChen
    A
    license
    C
    quality
    D
    maintenance
    Aggregates multiple third-party APIs into unified MCP tools, providing out-of-the-box access to 10 popular services including OpenWeather, Google Maps, GitHub, Notion, Spotify, and more. Enables users to interact with weather data, search places, manage repositories, create content, and access various web services through a single MCP server.
    34
    MIT

  • MCP (dot-do)

    dot-do
    A
    license
    Not graded
    quality
    D
    maintenance
    A framework that provides search, fetch, and do primitives to enable AI agents to orchestrate complex tasks via sandboxed TypeScript code execution. It optimizes performance and security by reducing multiple sequential tool calls into a single, efficient inference round-trip.
    33
    MIT

  • home-remote-mcps

    SlobodaFR
    F
    license
    Not graded
    quality
    B
    maintenance
    A personal remote MCP gateway that exposes Garmin Connect, Home Assistant, and YouTube as MCP servers over HTTP, allowing Claude or any MCP client to query and control them from anywhere without local credentials. It includes a web UI for managing credentials and issuing API keys, with authentication delegated to an external SSO.

  • demo-mcps

    Viyozc
    F
    license
    Not graded
    quality
    C
    maintenance
    Provides manufacturing demo data across procurement, production, quality, warehouse, and finance categories via MCP Streamable HTTP, enabling LLMs to retrieve mock datasets.
  • Swap API by Swap-API

    Swap APIofficial

    Swap-API
    A
    license
    Not graded
    quality
    D
    maintenance
    Free DEX aggregator API that returns executable swap calldata across 46 EVM chains. No API key required. Single GET request returns ready-to-sign transactions for any token pair.
    22
    MIT

  • Fizzy Do MCP

    ryanyogan
    A
    license
    Not graded
    quality
    C
    maintenance
    Open-source MCP server that connects AI assistants to Fizzy (Basecamp's task management) with 70+ tools for boards, cards, workflows, and AI-powered project management.
    22
    3
    MIT

  • mcp-send-that-email

    pipeworx-io
    A
    license
    Not graded
    quality
    C
    maintenance
    Enables AI agents to analyze whether they should send an email, evaluating passive aggression and regret probability with a recommendation heavily weighted toward no.
    10
    1
    MIT

  • Oracle of Nethys

    fbonds
    F
    license
    Not graded
    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.

  • mcp-server-do

    irvinebroque
    F
    license
    Not graded
    quality
    F
    maintenance
    Implements an MCP server using Cloudflare Durable Objects with SSE transport, enabling remote MCP client connections.
    1

  • 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

  • cost-of-work-index

    kindrat86
    F
    license
    A
    quality
    B
    maintenance
    Per-unit cost of 13 back-office tasks done by a person vs by software, in the US, Greece and Ukraine, with an official statistic behind every hourly wage. Bundled data, works offline.
    5