MCP Defender

As AI tools become part of everyday workflows, they also become new attack surfaces — and most users have no idea. MCP Defender is a desktop application designed to automatically secure AI apps like Cursor, Claude, Visual Studio Code, and Windsurf from a range of sophisticated attacks. Acting as an AI Firewall, it monitors and protects Model Context Protocol (MCP) communications by intercepting tool calls and responses in real time, verifying them against security signatures, and immediately alerting you if malicious activity is detected. You stay in full control — choosing to block or allow each action — while MCP Defender's intelligent LLM-powered threat detection works as a secure proxy analyzing every communication as it happens.