What is MCP Defender
MCP Defender is a desktop app and AI Firewall designed to monitor and protect Model Context Protocol (MCP) communications. It intercepts tool calls and responses, verifying them against security signatures.
Features of MCP Defender
- AI Firewall: Automatically scans and protects all MCP tool calls.
- Threat Detection: Provides advanced LLM-powered detection of malicious activity.
- Scan Control: Allows management of signatures used during scanning.
- Intelligent Threat Detection: Alerts users upon identifying malicious activity from AI apps.
- Automatic Protection: Acts as a secure proxy between AI applications and MCP servers, analyzing communications in real-time. Supported apps include Cursor, Claude, Visual Studio Code, and Windsurf.
Use Cases of MCP Defender
MCP Defender identifies and blocks common AI security threats, including:
- Prompt Injection: Manipulating an LLM with malicious instructions.
- Credential Theft: Reading or transmitting sensitive credentials like SSH keys.
- Arbitrary Code Execution: Unsanitized execution of malicious code.
- Remote Command Injection: Giving an attacker remote shell access.
