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# `openapi2mcp`

### Turn any OpenAPI spec into a Model Context Protocol server with one command.

![License](https://img.shields.io/badge/license-MIT-blue.svg) ![Language](https://img.shields.io/badge/language-python-green.svg) ![Status](https://img.shields.io/badge/status-active-success.svg) ![MIT License](https://img.shields.io/badge/license-MIT-blue.svg) ![Python](https://img.shields.io/badge/python-3.9%2B-blue.svg) ![MCP](https://img.shields.io/badge/MCP-compatible-purple.svg)

<img src="demo.gif" alt="Demo" width="700" />

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## 🎯 Why?

MCP is exploding, but every REST API still needs a hand-written MCP server. OpenAPI specs already describe tools, parameters, and schemas, so there is a missing zero-config bridge that turns existing API contracts into MCP tools for Claude, Cursor, and other agents.

**Target audience:** AI application developers and platform engineers who want coding agents to call internal or public REST APIs without writing bespoke MCP servers.

## ✨ Features

- ✨ **Generates MCP tools from OpenAPI paths and schemas**
- ✨ **Runs a minimal MCP stdio server with tools/list and tools/call**
- ✨ **Supports default auth headers, method allowlists, and base URL overrides**

## 🚀 Quick Start

```bash
# Install
pip install openapi2mcp

# Run
openapi2mcp --help
```

## 📦 Installation

### From Source

```bash
git clone https://github.com/YOUR_USERNAME/openapi2mcp.git
cd openapi2mcp
```

```bash
# Create virtual environment
python -m venv .venv
source .venv/bin/activate  # Windows: .venv\Scripts\activate

# Install in development mode
pip install -e ".[dev]"

# Run tests
pytest -v
```

## 🎬 Demo

The GIF above was recorded using [Charm VHS](https://github.com/charmbracelet/vhs):

```bash
vhs < demo.tape
```

## 📖 Usage

```bash
# Show help
openapi2mcp --help

# Common usage examples
openapi2mcp --example
```

## 🏗️ Architecture

```mermaid
graph LR
    A[Input] --> B[Core Engine]
    B --> C[Output]
    B --> D[Plugins]
    D --> E[Extensions]
```

## 🤝 Contributing

Contributions are welcome! Please:

1. Fork the repo
2. Create a feature branch (`git checkout -b feature/amazing-feature`)
3. Commit your changes (`git commit -m 'Add amazing feature'`)
4. Push to the branch (`git push origin feature/amazing-feature`)
5. Open a Pull Request

## 📄 License

MIT © 2026 — See [LICENSE](LICENSE) for details.

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