Mcp Watchdog

This is a security layer that sits between Claude and your MCP servers to block malicious prompts and injection attempts. It claims to detect over 40 attack patterns without requiring configuration, acting as a transparent proxy on the stdio transport. You'd use this if you're running MCP servers that handle sensitive data or operations and want an extra defense against prompt injection, jailbreaking, or other LLM-specific attacks. The source doesn't detail which specific attack classes it covers or how detection works, but the zero-config promise suggests it's meant to drop in without modifying your existing server setup.