MCP Defender
Acts as a secure proxy between AI applications and MCP servers, analyzing all communications for threats in real-time, blocking malicious activity.
MCP Defender is an AI firewall that protects AI applications like Cursor, Claude, and VS Code by acting as a secure proxy between the apps and MCP servers, analyzing all communications for threats in real-time. It targets developers and IT teams in organizations of all sizes, especially those using AI coding tools. It differentiates itself by combining advanced LLM analysis with deterministic signatures for comprehensive protection against prompt injection, credential theft, and command injection. It is available as an open-source, AGPL-3.0 licensed tool with a free tier and enterprise options.
Key features
- AI firewall for MCP tool calls
- Real-time threat detection
- LLM-powered malicious activity detection
- Deterministic signature scanning
- Protection against prompt injection
- Protection against credential theft
- Protection against command injection
- Secure proxy between AI apps and MCP servers
- Supports Cursor, Claude, VS Code, Windsurf
- Choose your own LLM provider
- Open source and AGPL-3.0 licensed
- No social media activity within the last 30 days
GTM channels
- Blog
ICP
- Software developers
- Engineering teams
- IT teams