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Secure AI Apps

MCP Defender is a desktop app that provides automatic protection for
AI apps
Claude AI App
Visual Studio Code
Cursor IDE
Command Line
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AI FirewallThreat DetectionScan Control

MCP Defender

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AI Firewall

Automatically scans and protects all MCP tool calls

Threat Detection

Advanced LLM-powered detection of malicious activity

Scan Control

Manage signatures that are used during scanning

See MCP Defender in Action

Watch how MCP Defender protects Cursor in real-time

WHY MCP DEFENDER?

Intelligent Threat Detection
MCP Defender will alert you as soon it identifies any malicious
activity being performed by your AI apps
MCP Defender Protection
Control How You Scan

Choose Your LLM Provider

Use MCP Defender with your preferred AI provider or our hosted
service for seamless security.

Open Source
Check out MCP Defender on GitHub
 
GitHub
Automatic Protection
MCP Defender acts as a secure proxy between your AI applications and
MCP servers, analyzing all communications for potential threats in
real-time. Cursor, Claude, Visual Studio Code and Windsurf are
supported, with more coming soon.
Claude
VSCode
Cursor
MCP Defender
GitHub
Figma
Cloudflare

SECURITY THREATS

What We Protect Against

MCP Defender identifies and blocks these common AI security threats
before they can cause damage

Prompt Injection

Manipulate an LLM with malicious instructions

Credential Theft

Read or transmit sensitive credentials like SSH keys

Arbitrary Code Execution

Unsanitized execution of malicious code

Remote Command Injection

Gives an attacker remote shell access

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