MCP-Defender

<p align="center"> <picture> <source media="(prefers-color-scheme: dark)" srcset="./src/assets/white_knight_icon.png"> <source media="(prefers-color-scheme: light)" srcset="./src/assets/black_knight_icon.png"> <img alt="Shows a black knight in light color mode and a white knight one in dark color mode." src="./src/assets/white_knight_icon.png" width="200" height="200"> </picture> </p> <h1 align="center">MCP Defender</h1> <h2 align="center">Automatically protects MCP traffic in AI apps</h2> <p align="center"> <a href="https://github.com/MCP-Defender/MCP-Defender"><img src="https://img.shields.io/github/stars/MCP-Defender/MCP-Defender?style=social" alt="GitHub stars"></a> <a href="https://discord.gg/SqXz6RGU"><img src="https://img.shields.io/discord/1376849284884074526?color=7289DA&label=Discord&logo=discord&logoColor=white" alt="Discord"></a> <a href="https://x.com/MCPDefender"><img src="https://img.shields.io/twitter/follow/MCPDefender?style=social" alt="Twitter Follow"></a> <a href="LICENSE"><img src="https://img.shields.io/github/license/MCP-Defender/MCP-Defender" alt="GitHub License"></a> </p> 🛡️ MCP Defender is a desktop application that automatically protects your computer from malicious MCP traffic. 🚦 All MCP tool call requests and responses from AI apps like Cursor, Claude and Windsurf are automatically proxied through MCP Defender. 🔎 The intercepted data is then checked against security signatures - if anything harmful is detected, MCP Defender will alert you and ask if you want to allow or block the tool call from proceeding. # Quick Start [Download MCP Defender for Mac](https://mcpdefender.com) Windows & Linux Coming Soon Alternatively you can clone the git repo, and run it as follows: ```bash # Install dependencies npm install # Start app npm start ``` # Demos ## Contributing We love contributions! Feel free to open issues for bugs or feature requests. ## License MCP Defender is [Apache 2.0 licensed](LICENSE).