Kiln-AI
★ 5,069Kiln
Build, Evaluate, and Optimize AI Systems. Includes evals, RAG, agents, fine-tuning, synthetic data generation, dataset management, MCP, and more.
AI channelMCP servers 
★ 4,469
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
73–96 of 57854yyyu
★ 5,026zotero-mcp
Zotero MCP: Connects your Zotero research library with Claude and other AI assistants via the Model Context Protocol to discuss papers, get summaries, analyze citations, and more.
exa-labs
★ 5,007exa-mcp-server
Exa MCP for web search and web crawling!
TabularisDB
★ 4,951tabularis
Open-source desktop SQL workspace for PostgreSQL, MySQL/MariaDB, SQLite and 15+ more databases like DuckDB, ClickHouse, Redis and Firestore. Built-in MCP server for Claude, Cursor and Devin, SQL notebooks and visual EXPLAIN.
aipotheosis-labs
★ 4,889aci
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.
agentgateway
★ 4,865agentgateway
Next Generation Agentic Proxy for AI Agents and MCP servers
Waishnav
★ 4,770devspace
Minimal Coding Agent Harness on MCP for ChatGPT, Claude, Hermes, Grok Bot, OpenClaw
homeassistant-ai
★ 4,734ha-mcp
The Unofficial and Awesome Home Assistant MCP Server
u14app
★ 4,684deep-research
Use any LLMs (Large Language Models) for Deep Research. Support SSE API and MCP server.
didilili
★ 4,647ai-agents-from-zero
🚀 2026 最系统的 AI Agent 速成指南｜智能体实战教程 · 完整学习路径 + 实战项目 + 面试题库 · 对标大模型应用开发工程师岗位 · 覆盖LangChain / LangGraph / Coze / Dify / MCP / skills / LLM / RAG / 提示词 · 企业级部署与微调 · 从0到企业级落地 + 从学习到上线项目 + 面试准备一体化
callstack
★ 4,594agent-device
Mobile app automation and verification for AI coding agents. CLI, MCP server, and typed Node.js API for iOS, Android, HarmonyOS, TV, web, macOS, and Linux.
An AI Gateway, registry, and proxy that sits in front of any MCP, A2A, or REST/gRPC APIs, exposing a unified endpoint with centralized discovery, guardrails and management. Optimizes Agent & Tool calling, and supports plugins.
open-webui
★ 4,375mcpo
A simple, secure MCP-to-OpenAPI proxy server
antvis
★ 4,364mcp-server-chart
🤖 A visualization mcp & skills contains 25+ visual charts using @antvis. Using for chart generation and data analysis.
archestra-ai
★ 4,279archestra
Enterprise AI Platform with guardrails, MCP registry, gateway & orchestrator
IvanMurzak
★ 4,273Unity-MCP
AI Skills, MCP Tools, and CLI for Unity Engine. Full AI develop and test loop. Use cli for quick setup. Efficient token usage, advanced tools. Any C# method may be turned into a tool by a single line. Works with Claude Code, Gemini, Copilot, Cursor and any other absolutely for free.
haris-musa
★ 4,186excel-mcp-server
A Model Context Protocol server for Excel file manipulation
nageoffer
★ 4,015ragent
企业级 Agentic RAG 智能体 - 全链路覆盖文档解析、多路检索、意图识别、问题重写、会话记忆、MCP 工具调用与深度思考。面向真实业务场景，从 0 到 1 完整工程实现。
bostrot
★ 4,000wsl2-distro-manager
GUI for the Windows Subsystem for Linux — and native Linux/macOS VMs on Mac. Install, back up, move and configure distros without CLI flags; AI assistant with tools, MCP server for agents, remote WSL over SSH.
evalstate
★ 3,919fast-agent
Code, Build and Evaluate agents - excellent Model and Skills/MCP/ACP/A2A Support
remorses
★ 3,893playwriter
Chrome extension & CLI to let agents control your browser. Runs Playwright snippets in a stateful sandbox. Available as CLI or MCP
bethington
★ 3,814ghidra-mcp
Ghidra MCP Server — 200+ MCP tools for AI-powered reverse engineering. GUI plugin + headless server, lazy tool loading, convention enforcement, batch operations, Ghidra Server integration, and Docker deployment.
Atmosphere
★ 3,812atmosphere
Portable AI agent runtime for the JVM. One @Agent class runs on Spring AI, LangChain4j, Anthropic, or 9 more behind one SPI. Token streaming, tool calls, human approvals, and governance over WebSocket, SSE, gRPC, or WebTransport/HTTP3. Speaks MCP, A2A, and AG-UI.
yvgude
★ 3,781lean-ctx
Control what your AI can see. LeanCTX (Lean Context) is the context intelligence layer for AI agents, one local Rust binary that decides what they read, remembers what they learn, guards what they touch, and proves what they save. 60 90% fewer tokens as the receipt. 76 MCP tools, 30+ agents, local-first.