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61 #open-source MCP Servers & Clients

Every MCP server and client below is tagged #open-source — install one to give Claude, Cursor, VS Code, or any other MCP-compatible client access to open-source tools.

All

Production-ready MCP integrations for AI applications

Klavis-AI

Klavis AI: MCP integration platforms that let AI agents use tools reliably at any scale

Added 2 years ago

ACI: Open-Source Infra to Power Unified MCP Servers

aipotheosis-labs

ACI.dev is the open source tool-calling platform that hooks up 600+ tools into any agentic IDE or custom AI agent through direct function calling or a unified MCP server. The birthplace of VibeOps.

Added 2 years ago

MCP Client for Ollama (ollmcp)

jonigl

Harness the power of local LLMs with this TUI MCP Client for Ollama. Featuring all core MCP primitives (tools, prompts, resources), agent mode, multi-server, model switching, streaming responses, human-in-the-loop, thinking mode, model params config, system prompts, and saved pre

Added last year

Earn With AI

garylab

A list of open-source AI projects you can use to generate income easily.

Added 2 years ago

Earn With AI

garymengcom

A list of open-source AI projects you can use to generate income easily.

Added 2 years ago

11111111111

mannaandpoem

Added 2 years ago

Wikipedia MCP Server

Rudra-ravi

A Model Context Protocol (MCP) server that retrieves information from Wikipedia to provide context to LLMs.

Added 2 years ago

Api200

API-200

API 200 is an open source API gateway to simplify 3rd-party integrations. Import endpoints, set up caching, retries, and mocks. Access all services via one URL. Monitor logs, track errors, and get alerts on API incidents.

Added 2 years ago

PLUR

plur-ai

AI agents start every session with amnesia — you re-explain the project, repeat your preferences, and correct the same mistakes over and over. PLUR gives them a memory that persists. Your agent's corrections, preference

Added 3 months ago

MCP Servers

pathintegral-institute

Open Source MCP Servers for Scientific Research

Added 2 years ago

Fabric MCP Server

ksylvan

Fabric MCP Server: Seamlessly integrate Fabric AI capabilities into MCP-enabled tools like IDEs and chat interfaces.

Added last year

Gofannon

The-AI-Alliance

A web app for rapidly prototyping AI agents and the lightweight web UIs that wrap them—build flows, preview interactions, and share agent-driven experiences without lock-in.

Added 2 years ago

MCP SearXNG Enhanced Server

OvertliDS

Enhanced MCP server for SearXNG: category-aware web-search, web-scraping, and date/time retrieval.

Added last year

MCP File System Server

MarcusJellinghaus

MCP Workspace Server: A secure Model Context Protocol server providing file, git, and GitHub tools for AI assistants within a sandboxed project directory.

Added 2 years ago

Gainium

Ares Sanchez

Docker Compose stack for deploying the Gainium trading platform, including microservices, databases, and frontend applications for local development and self-hosting.

Added 3 months ago

Octagon VC Agents

OctagonAI

An MCP server that runs AI-driven venture capitalist agents (Fred Wilson, Peter Thiel, etc.), whose thinking is continuously enriched by Octagon Private Markets' real-time deals, valuations, and deep research intelligence. Use it to spin up programmable "VC brains" for pitch feed

Added 2 years ago

MCP Manager

nstebbins

CLI tool for managing Model Context Protocol (MCP) servers in one place & using them across them different clients

Added 2 years ago

AI Chat Desktop Applications

alexandephilia

Electron-based desktop applications for various AI chat platforms.

Added 2 years ago

AI Chat Linux Desktops Applications

alexandephilia

Electron-based desktop applications for various AI chat platforms.

Added last year

MCP Browser Automation

algonius

MCP browser automation server. Exposes browser control tools to external AI systems via Model Context Protocol. Open-source & secure.

Added last year

Simplenote Mcp Server

docdyhr

MCP Server for Simplenote integration with Claude Desktop

Added 2 years ago

Anthropic MCP Code Analyzer

kivo360

An MCP server for analyzing open source projects and assisting with codebase integration

Added 2 years ago

Mimic Ai

miapre

The design system copilot that builds Figma from HTML using your real components and tokens. Learns your system, surfaces your gaps.

Added 7 months ago

pseolint

ouranos-labs

SpamBrain-proof your pSEO before you publish, audit page relationships, not just pages. AI-triaged findings, 8 LLM providers, local telemetry, cost caps, MCP server.

Added 5 months ago

Casefile

azimov777

One case file per task — shared by every session, agent and person that touches it. Self-hosted MCP server and live board. MIT.

Added last month

Openmm MCP

QBT-Labs

MCP server giving AI agents real crypto trading capabilities. 13+ tools for market data, order execution, grid strategies, and portfolio management across 4 exchanges

Added 8 months ago

Infomesh

dotnetpower

🕸️ Fully decentralized P2P search engine for LLMs — no API key, no billing, forever free. MCP-native web search via Kademlia DHT + libp2p + FTS5. Production stable ✅ → pip install infomesh

Added 8 months ago

File system MCP

iBz-04

This is a File system mcp server that could allow an LLM to read and list files from a specified safe directory on your local machine.

Added 2 years ago

Novu MCP

novuhq

Notification and agent communication infrastructure for AI agents and coding tools. Trigger multi-channel notification workflows (email, SMS, push, in-app, chat), manage subscribers and preferences, and create, connect,

Added 2 months ago

GitLab MCP Server

TheRealChrisThomas

Gitlab MCP Server

Added last year

MCP - Dev.to

extinctsion

mcp server to publish dev.to article automatically. In .NET 9

Added last year

Geniuz

jackccrawford

Open-source MCP server that gives Claude persistent memory. Your AI keeps your standards, decisions, and reasons across sessions. Recalled by meaning, not keywords. Runs fully local: on-device semantic search, no cloud, no API keys. macOS, Windows, Linux. MIT.

Added 5 months ago

mcp_prompt_mapper

Sumedh1599

Generates optimal Claude/OpenAI-ready prompts to build each part of the MCP server (resources, tools, prompts) from the input generated by `mcp_input_analyzer`.

Added last year

Agent402

MikeyPetrillo

Open-source MCP server with ~1,100 deterministic tools — web search, headless Chromium, PDFs, OCR, images, ~1,040 CPU utilities. Free to self-host or pay per call via x402 (USDC on Base).

Added 4 months ago
PM

pgEdge MCP Server for Postgres

pgedge

The pgEdge Postgres Model Context Protocol (MCP) server enables SQL queries against PostgreSQL databases through MCP-compatible clients like Claude Desktop. The Natural Language Agent provides supporting functionality that allows you to use natural language to form SQL queries.

Added 9 months ago

Omnara

Omnara

Launch and manage Omnara agents, profiles, secrets and machines from Claude Code, Codex, Cursor or any MCP client.

Added 12 days ago

Open Brewery DB

jimbuck

A free database of breweries, cideries, brewpubs, and bottleshops.

Added last year

mcp_server_generator

Sumedh1599

Automatically generates a full MCP server codebase (Node/Python/Java) using the validated schema, outputting modular files for CLI-based execution or Claude Desktop connection.

Added last year

MCP-Community

deepinsightsx-hari

Open source community for mcp servers

Added 2 years ago

Eyevinn Open Source Cloud MCP Server

MCP-Mirror

Mirror of

Added 2 years ago

Jitsu

Jitsu

Jitsu is an open-source Customer Data Platform — an MIT-licensed alternative to Segment. This MCP server gives your AI assistant direct control over a Jitsu workspace, so you can run and debug data pipelines in conversat

Added 2 months ago

easy-mcp

zcaceres

Absurdly easy Model Context Protocol Servers in Typescript

Added 2 years ago

mcp_auto_builder

Sumedh1599

Final unified interface for global users. Just describe your server, paste your API key (Claude/OpenAI/Grok), and this library will build, test, and deploy the full MCP server locally or remotely.

Added last year

PostgreSQL MCP Server

SwanHtetAungPhyo

Added last year

Flutter MCP Server

Centinol-alt

Open-source Model Context Protocol (MCP) server for Dart & Flutter. Exposes SDK tools and project resources for AI-driven workflows, automation, and remote development

Added 2 years ago

ai-memory — Persistent Memory for Any AI

alphaonedev

Persistent memory for any AI assistant. Zero token cost until recall. Stores memories locally in SQLite, ranks by 6-factor scoring, returns results in TOON compact format (79% smaller than JSON). 17 MCP tools, 20 HTTP endpoints, 25 CLI commands. 4 tiers from keyword to autonomous

Added 7 months ago

Personal Context Technology MCP Server

mikhashev

Personal Context Technology for AI Personalization MCP server

Added 2 years ago

MCP Ecosystem Server Repository

Toowiredd

Added 2 years ago

MCP Dev LATAM — 109 Servers · 2,289 Tools for Agentic Commerce

codespar

109 MCP servers for agentic commerce across LATAM (Brazil, Mexico, Argentina, Colombia, Chile, Peru). Stripe ACP, x402, AP2, Google UCP + 100 regional providers covering payments, fiscal, banking, communication, logistics, ERP, identity. 2,289 tools. stdio + Streamable HTTP. Publ

Added 6 months ago
Q

QuerySculptor

flinstonedev

QuerySculptor is a GraphQL query builder designed for AI agents that provides 26 structured tools via the Model Context Protocol (MCP). Instead of generating complex GraphQL queries from scratch, AI agents can build queries step-by-step with real-time validation, schema introspec

Added last year

Gerolamo — Competitive Science and Technology Intelligence for AI Agents

adjective-rob

Scout, score, and fuse 36,000+ open-source projects, papers, and ML models into defensible technology stacks. Your agent can discover undervalued sleepers before they break out, threat-check dependencies for frontier-lab obsolescence risk, compose new software architectures from

Added 6 months ago

Pro MCP

codixra

World Growing MCP Directory for Developers and AI Enthusiast to explore and latest and finest MCP servers on the web.

Added 2 years ago

Issac_rodriguez_chatinterface

24f1002341

this code belongs to issac...we r trying to connect it to a mcp server that we designing...its public u can use if u want

Added last year

MCP Agent Connector

Sumedh1599

Enables any MCP-compliant agentic platform (Claude, Grok, TypingMind, Cursor, etc.) to auto-discover generated MCP servers and sync capabilities from build metadata.

Added last year

Byakugan: Private, open-source AI-text checker

JayOfemi

A private, open-source AI-text checker, as a browser app and an MCP server, all on your own machine.

Added 4 months ago

Filesystem MCP 🌐

Tabeeh

Node.js Model Context Protocol (MCP) server providing secure, relative filesystem access for AI agents like Cline/Claude.

Added 2 years ago

Klavis AI 🌟

alexgolemelectrico

Klavis AI (YC X25): Open Source, easy to use MCPs on Slack, Discord and Web

Added 2 years ago

GitHub Actions for Plane-MCP

Creodot

✈ MCP For Plane.so

Added 2 years ago

Openaccountants

openaccountants

Open-source, accountant-verified tax computation skills for AI agents. 261+ skills across 172+ jurisdictions covering income tax, VAT/GST, payroll, corporate tax, crypto, and cross-border planning. Every skill is verified section-by-section by licensed CPAs and chartered accounta

Added 5 months ago

McpMux — Configure MCP servers once, connect every AI client

mcpmux

One app to manage all your MCP servers across every AI client.

Added 8 months ago

Novu - Connect your AI agents & products to customers

Novu

Novu is the open-source communication layer for AI agents. An agent built on Novu connects to MCP servers like Linear, GitHub, and Notion for its tools, then talks with your users on Slack, Microsoft Teams, WhatsApp, Tel

Frequently asked questions

Common questions about MCP servers and clients tagged #open-source

1

What is a #open-source MCP server?

An MCP server tagged #open-source implements the Model Context Protocol so AI assistants like Claude, Cursor, and VS Code can access open-source-related tools, data, or APIs.

2

How many #open-source MCP servers and clients are there?

mcp.so currently lists 61 MCP servers and clients tagged #open-source.

3

How do I install a #open-source MCP server?

Open any server below and copy its install snippet into Claude Desktop, Cursor, VS Code, or another MCP client's configuration — remote servers need no separate download.