Enkrypt AI provides security and compliance tools to detect threats, remove vulnerabilities, and monitor AI system performance.
MCP Defender
MCP Defender protects Cursor and other desktop AI applications from security threats; the project has been acquired by Docker.
About MCP Defender
MCP Defender monitors communications between desktop AI applications and MCP servers, scanning MCP tool calls and alerting when malicious activity is identified. It uses LLM analysis together with deterministic signatures, and addresses threats such as prompt injection, tool poisoning, credential theft, arbitrary code execution and remote command injection.
It supports Cursor, Claude, Visual Studio Code and Windsurf, and allows use of a preferred LLM provider with the user's own API keys. The project has been acquired by Docker Inc.
Key features
- Acts as proxy between AI apps and MCP servers
- Scans MCP tool calls in real-time for threats
- Alerts when malicious activity is identified
- Uses LLM analysis with deterministic signatures
- Lets users manage signatures used during scanning
- Supports use of preferred LLM with own API keys
Best for: People using Cursor, Claude, Visual Studio Code or Windsurf with MCP servers who want tool calls checked.
Good for
- Supports Cursor, Claude, Visual Studio Code and Windsurf
- Combines LLM analysis with deterministic signatures
- Allows choice of LLM provider and management of signatures
Watch out for
- Requires users to supply their own LLM API keys
MCP Defender at a glance
- Website
- mcpdefender.com
- Category
- AI & Machine Learning › AI Data & Analytics
- Type
- Online tool
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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MCP Defender FAQ
Which AI applications are supported?
Cursor, Claude, Visual Studio Code and Windsurf.
How does it check for threats?
It acts as a proxy between AI applications and MCP servers and analyzes communications in real-time.
Can I use my own LLM provider?
Yes, it can be used with a preferred LLM using your own API keys.
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