freemcp-registry

<p align="center"> <img src="https://img.shields.io/badge/MCP-Registry-6366f1?style=for-the-badge&logo=data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMjQiIGhlaWdodD0iMjQiIHZpZXdCb3g9IjAgMCAyNCAyNCIgZmlsbD0ibm9uZSIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj48cGF0aCBkPSJNMTIgMkwyIDdsOTkuOTk5IDUgMTAtNS0xMC01ek0yIDE3bDEwIDUgMTAtNUMyIDEybDEwIDUgMTAtNSIgc3Ryb2tlPSJ3aGl0ZSIgc3Ryb2tlLXdpZHRoPSIyIi8+PC9zdmc+" alt="FreeMCP Registry" /> <img src="https://img.shields.io/badge/100%25-Free%20%26%20Open%20Source-34d399?style=for-the-badge" alt="Free & Open Source" /> <img src="https://img.shields.io/badge/License-MIT-818cf8?style=for-the-badge" alt="MIT License" /> <img src="https://img.shields.io/badge/Infra%20Cost-%240%2Fmo-22d3ee?style=for-the-badge" alt="$0/mo" /> </p> <h1 align="center">FreeMCP.in</h1> <p align="center"> <strong>The community-curated registry of 100% free and open-source<br/>Model Context Protocol (MCP) servers.</strong> </p> <p align="center"> <a href="https://freemcp.in">🌐 Live Site</a> &nbsp;·&nbsp; <a href="#-submit-a-server">📬 Submit a Server</a> &nbsp;·&nbsp; <a href="#-contributing">🤝 Contribute</a> &nbsp;·&nbsp; <a href="https://github.com/strbbrn/freemcp-registry/registry/discussions">💬 Discussions</a> </p>

---

🧠 What is MCP?

The Model Context Protocol (MCP) is an open standard created by Anthropic that provides a universal way for AI models and agents to connect to external tools, data sources, and services. Think of it as a USB-C port for AI — one protocol, infinite possibilities.

MCP servers expose capabilities (tools, resources, prompts) that any compatible AI client — Claude Desktop, Cursor, LangChain, LangGraph, CrewAI — can instantly use without custom integration code.

FreeMCP.in exists because finding reliable, truly free MCP servers shouldn't require digging through scattered GitHub repos or hitting enterprise paywalls.

✨ What is FreeMCP?

FreeMCP is a fast, searchable, static registry that curates only free and open-source MCP servers. No freemium traps. No enterprise tiers. No vendor lock-in.

Why FreeMCP?

| Problem | FreeMCP Solution | |---|---| | Existing directories mix paid and free tools | Strictly 100% free & open-source servers only | | Hard to find servers by use case | Category filters + real-time search by name, tags, description | | No standardized quality bar | Community-vetted with clear submission criteria | | Registries require expensive backends | Zero-cost static site — JSON data + Cloudflare Pages | | Discovery is fragmented across GitHub | One central hub for the community |

Who is this for?

• 🤖 AI Engineers building autonomous agents with LangGraph, LangChain, or CrewAI
• 🛡️ DevSecOps Teams looking for security and ASM tooling via MCP
• 🧑‍💻 Developers integrating MCP servers into Claude Desktop or Cursor
• 🌍 Open-source contributors who want to help the ecosystem grow

🗂️ Registry Structure

All server data lives in a single static JSON file:

src/data/registry.json

Each entry follows this schema:

{
  "id": "unique-server-id",
  "name": "Server Display Name",
  "description": "What this server does and why it's useful for agents.",
  "githubUrl": "https://github.com/author/repo",
  "author": "github-username",
  "category": "Database | Development | Security | DevOps | Utilities | Search | Communication | Cloud",
  "stars": 1234,
  "tags": ["tag1", "tag2", "langchain", "devsecops"],
  "featured": false
}

Current Categories

| Category | Description | Examples | |---|---|---| | 🗄️ Database | SQL/NoSQL access for agents | SQLite, PostgreSQL | | ⌨️ Development | Code, repos, and dev workflows | GitHub, Filesystem | | 🛡️ Security | Scanning, SAST, recon, ASM | Shodan, Nmap, Semgrep | | 🚀 DevOps | Containers, CI/CD, infra | Docker | | 🔧 Utilities | General-purpose tools | Puppeteer, Browser automation | | 🔍 Search | Web and data search | Brave Search | | 💬 Communication | Messaging and notifications | Slack | | ☁️ Cloud | Cloud provider integrations | AWS Knowledge Base |

---

📬 Submit a Server

Found a great open-source MCP server that's not listed? We'd love to add it!

Submission Criteria

Before submitting, make sure the server meets all of these:

• [x] Open source — public GitHub repo with a recognized OSS license (MIT, Apache 2.0, GPL, etc.)
• [x] 100% free — no paid tiers, no API key paywalls for core functionality
• [x] MCP compliant — implements the Model Context Protocol standard
• [x] Working — has a functional README with setup instructions
• [x] Not a duplicate — check the live registry first

How to Submit

Option A: GitHub Issue (easiest)

1. Go to Submit a Server →
2. Fill out the issue template with the server details
3. A maintainer will review and add it to the registry

Option B: Pull Request (for contributors)

1. Fork this repository
2. Add the server entry to src/data/registry.json
3. Follow the schema above — make sure the JSON is valid
4. Open a PR with the title: Add: [Server Name]
5. A maintainer will review and merge

What happens after submission?

You submit → Maintainer reviews → Merged to main → Cloudflare auto-deploys → Live on freemcp.in

Typical turnaround: 24–72 hours. We review every submission manually to maintain quality.

---

🤝 Contributing

FreeMCP is built by the community, for the community. There are many ways to contribute beyond adding servers!

Ways to Contribute

| Contribution | Description | Difficulty | |---|---|---| | 🆕 Submit a server | Add a new MCP server to the registry | Easy | | 🐛 Report a bug | Found a broken link or UI issue? Open an issue | Easy | | 📝 Improve descriptions | Help write clearer server descriptions | Easy | | 🏷️ Suggest categories/tags | Help us organize better | Easy | | 🎨 UI/UX improvements | Design tweaks, accessibility, mobile fixes | Medium | | ⭐ Star the repo | Helps others discover FreeMCP | Easy | | 📢 Spread the word | Share on Twitter/X, Reddit, Discord, HN | Easy | | 🧪 Test servers | Verify listed servers still work | Medium | | 🌐 Add features | Search improvements, new pages, PWA support | Advanced |

Development Setup

# Clone the repo
git clone https://github.com/strbbrn/freemcp-registry/registry.git
cd registry

# Install dependencies
npm install

# Start dev server
npm run dev

# Build for production
npm run build

# Preview production build
npm run preview

Project Structure

freemcp-registry/
├── src/
│   ├── data/
│   │   └── registry.json       # ← The registry database (edit this to add servers)
│   ├── layouts/
│   │   └── Layout.astro        # Global layout, nav, footer, design system
│   └── pages/
│       └── index.astro         # Main page — hero, search, card grid
├── astro.config.mjs            # Astro configuration
├── tailwind.config.mjs         # Tailwind CSS configuration
├── wrangler.toml               # Cloudflare Pages deployment config
└── package.json

Code Guidelines

• Keep it static — no backend, no databases, no API calls at runtime
• Keep it fast — the site should feel instant; minimize JS where possible
• Keep it accessible — semantic HTML, proper contrast, keyboard navigation
• Keep it clean — readable code with clear comments for complex sections
• Test your changes — run npm run build before submitting a PR

---

🏗️ Tech Stack

| Layer | Technology | Why | |---|---|---| | Framework | Astro | Zero-JS by default, blazing fast static builds | | Styling | Tailwind CSS + custom CSS | Utility-first with design token system | | Fonts | Inter + JetBrains Mono | Premium readability for UI + code | | Data | Static JSON | No database, no API, no cost | | Hosting | Cloudflare Pages | Free tier, global CDN, automatic deploys | | Domain | freemcp.in | Custom domain |

Total infrastructure cost: $0/month (forever on the free tier)

---

🗺️ Roadmap

We're just getting started. Here's what's planned:

• [ ] Server detail pages — individual pages with full README, install commands, and compatibility matrix
• [ ] GitHub star count sync — auto-update star counts via GitHub Actions (scheduled cron)
• [ ] Server health checks — automated testing to verify servers are still functional
• [ ] One-click config generator — paste-ready claude_desktop_config.json snippets
• [ ] RSS feed — subscribe to new server additions
• [ ] Community voting — upvote your favorite servers
• [ ] MCP server compatibility matrix — which servers work with which clients
• [ ] Dark/light mode toggle — for the light mode fans
• [ ] PWA support — install FreeMCP as a desktop/mobile app

Have an idea? Start a discussion →

---

🌱 Help the Community Grow

FreeMCP is a zero-budget, community-driven project. The best way to help is to spread the word:

• ⭐ Star this repo — it's the #1 signal that helps others discover us
• 🐦 Share on Twitter/X — tag your AI engineering friends
• 💬 Post in Discord/Slack communities — LangChain, CrewAI, AI Engineering groups
• 📝 Write about it — blog posts, tutorials, mentions in newsletters
• 🎥 Make a video — showcase how you use MCP servers in your agent stack
• 🔗 Link to freemcp.in — from your README, docs, or blog

Every star, share, and contribution helps more AI engineers discover free tools. Let's build the definitive open-source MCP ecosystem together.

---

📄 License

This project is licensed under the MIT License — see the LICENSE file for details.

You're free to use, modify, and distribute this project. Attribution is appreciated but not required.

---

<p align="center"> <strong>Built with ❤️ for the AI engineering community</strong> <br/> <a href="https://freemcp.in">freemcp.in</a> </p>