MCP servers

Open-source MCP servers

MCP, the Model Context Protocol, is an open standard for connecting AI assistants to outside tools and data. An MCP server exposes something, such as a database, a browser, a GitHub account or a folder of files, as tools the assistant can call. Clients such as Claude Desktop, Cursor and VS Code load these servers.

How to choose

Check what a server can reach before you install it. One that can run shell commands or write files has all the power of the account it runs under, so prefer servers that ask for the narrowest access: read-only tokens and a single folder. Also check whether it runs locally over stdio or as a remote service you would have to trust.

Most-starred projects

553–576 of 634

mondaycom

mcp

★ 427

Enable AI agents to work reliably - giving them secure access to structured data, tools to take action, and the context needed to make smart decisions.

TypeScript

agent-sh

agnix

★ 425

The missing linter and lsp for AI coding assistants. Validate CLAUDE.md, AGENTS.md, SKILL.md, hooks, MCP. Plugin for all major IDEs included, with autofixes.

Rust

elara-labs

code-context-engine

★ 424

Save 94% on AI coding tokens. Index your codebase, agents search instead of reading files. Works with Claude Code, Codex, Copilot, Cursor, Gemini CLI. Local MCP server, free, open source.

Python

cwinvestments

memstack

★ 422

Structured skill framework for Claude Code. 130 skills, persistent memory, TokenStack compression, localhost dashboard with 3-agent runner, real-time streaming, MCP tools.

Python

itechmeat

open-second-brain

★ 422

Local-first 🧠 memory for Hermes Agent that lives in your Obsidian vault and remembers project context. Nightly 😴 dream passes turn repeat corrections into confirmed preferences with measurable confidence. Adapters ship for Claude Code, Codex, and OpenClaw, with an MCP server for anything else.

TypeScript

ThinkfleetAI

memmesh

★ 422

Persistent, self-improving memory for AI agents. Local-first Rust memory engine with MCP support.

Rust

pax-beehive

paxm

★ 421

Persistent, provider-neutral memory for Codex, Claude Code, OpenCode, Pi, and MCP coding agents.

zapier

zapier-mcp

★ 420

Official plugin distribution for the hosted Zapier MCP server. Install it in your AI client and connect to thousands of apps.

openaccountants

★ 419

Open-source Tax Guides for AI agents, reviewed by named CPAs/CAs/EAs. 1,000+ Guides across 190+ jurisdictions. MCP server included. Works with Claude, ChatGPT, Cursor.

Python

erpipe-org

mcp-odoo

★ 417

Odoo MCP for AI agents — gated writes, multi-instance. Hosted product: https://erpipe.com

Python

burugo

one-mcp

★ 414

A centralized reverse-proxy platform for MCP servers — manage, group, and export as Skills from a single endpoint.

gotalab

skillport

★ 414

Bring Agent Skills to Any AI Agent and Coding Agent — via CLI or MCP. Manage once, serve anywhere.

Python

Kocoro-lab

Kocoro

★ 413

A Mac-native AI agent with memory, local computer access, browser control, IM channels, and MCP-native integrations. Built on Shannon.

alibaba

UnifiedModel

★ 411

The semantic layer that makes enterprise data understandable to AI agents — model entities and relations once, query through SPL/MCP/REST, and connect telemetry, services, and business objects in one object graph.

HuangYuChuh

ComfyUI_Skills_OpenClaw

★ 411

Agent-friendly ComfyUI workflow skills for OpenClaw, Hermes Agent, Codex, and Claude Code; complementary to Comfy official local MCP.

Python

Lyellr88

marm-memory

★ 409

Local-first 3-in-1 AI memory layer & MCP server for Claude Code, Codex, Grok, Gemini, VS Code and Cursor. Fuses session history, codebase indexing & concept graphs in SQLite. Enables zero-cloud, privacy-first context & instant recall, supports multi-agent swarms.

Python

IBM

mcp

★ 407

A collection of Model Context Protocol (MCP) servers, clients and developer tools by IBM.

oxbshw

watch-skill

★ 406

Give AI agents eyes, ears, and verifiable results. Watch Skill turns video, audio and screen activity into searchable, timestamped evidence and proves work with deterministic contracts, not model opinion. DeepWatch is the agent workspace built on DeepSeek Harness. Python + npm, MCP, CLI, REST, Web.

Python

chenxin-yan

crust

★ 405

A TypeScript CLI framework that ships your commands as a CLI, agent skills, and MCP.

TypeScript

shinpr

mcp-local-rag

★ 405

Local-first RAG server for developers. Semantic + keyword search for code and technical docs. Works with MCP or CLI. Fully private, zero setup.

TypeScript

shamspias

customizable-gpt-chatbot

★ 404

Veldra — talk an agent into existence, then watch it grow. A self-hostable, local-first agent platform: describe what you need in plain language and it compiles a working agent tools, MCP, RAG, teams. The more you use it, the better it gets agents learn from your feedback and reshape as you talk.

Python

Context-Engine-AI

Context-Engine

★ 402

Context-Engine MCP - Agentic Context Compression Suite

Python

drfccv

mcp-server-12306

★ 401

12306 MCP Server 是一个基于 Model Context Protocol (MCP) 的高性能火车票查询后端系统。它通过标准化接口提供官方 12306 的实时数据服务，包括余票查询、车站信息、列车经停站、中转换乘方案等核心功能。

Python

agent-next

polymarket-paper-trader

★ 399

Paper trading simulator for Polymarket — built for AI agents. MCP server, live order books, strategy backtesting. Install: npx clawhub install polymarket-paper-trader

Python