# MCP-Defender

> MCP-Defender — mcp-defender-mcp-defender. Use this tool when you need to protect AI applications from malicious traffic. The MCP-Defender desktop app automatically scans and blocks harmful MCP traffic in popular apps like Cursor, Claude, VS Code, and Windsurf, providing a secure environment for development and operation. It integrates with git, allowing for seamless security checks and code protection.

Canonical page: https://skillsregistry.net/skills/mcp-defender-mcp-defender  
JSON: https://api.skillsregistry.net/v1/skills/mcp-defender-mcp-defender

## Description

Desktop app that automatically scans and blocks malicious MCP traffic in AI apps like Cursor, Claude, VS Code and Windsurf.

## Trust

- **Trust score (0–1):** 0.76
- **Verification tier:** verified
- **Last scanned:** 2026-09-28

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** container
- **Runtime environment:** vm
- **License:** AGPL-3.0
- **Updated:** 2026-09-28

## Source

- **Source listing:** [GitHub](https://github.com/MCP-Defender/MCP-Defender)

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "mcp-defender-mcp-defender"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/mcp-defender-mcp-defender` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/mcp-defender-mcp-defender/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt