Code Sanitizer MCP server

<!-- mcp-name: io.github.notasandy/mcp-code-sanitizer -->

mcp-code-sanitizer

Strict AI-powered code reviewer for Claude Desktop, Cursor, VS Code, and Claude Code CLI.

Finds bugs, vulnerabilities, and security issues — powered by Groq (free API).

Claude / Cursor / VS Code  ──MCP──►  code-sanitizer  ──REST──►  Groq API
                                        (server.py)              (llama-3.3-70b)

Features

Example output

{
  "summary": "Critical SQL injection and secret exposed in logs",
  "score": 23,
  "issues": [
    {
      "severity": "critical",
      "line": 2,
      "title": "SQL Injection",
      "description": "f-string directly interpolates user_id into query",
      "fix": "cursor.execute('SELECT * FROM users WHERE id = %s', (user_id,))"
    }
  ],
  "warnings": [{"title": "No exception handling", "description": "..."}],
  "suggestions": ["Consider using an ORM instead of raw SQL"]
}

Installation

Prerequisite: Get a free Groq API key at console.groq.com/keys — no credit card required.

Claude Code CLI

claude mcp add code-sanitizer -e GROQ_API_KEY=gsk_your_key -- uvx mcp-code-sanitizer

Claude Desktop

{
  "mcpServers": {
    "code-sanitizer": {
      "command": "uvx",
      "args": ["mcp-code-sanitizer"],
      "env": {
        "GROQ_API_KEY": "gsk_your_key_here"
      }
    }
  }
}

Cursor

Create .cursor/mcp.json in your project (or ~/.cursor/mcp.json globally):

{
  "mcpServers": {
    "code-sanitizer": {
      "command": "uvx",
      "args": ["mcp-code-sanitizer"],
      "env": {
        "GROQ_API_KEY": "gsk_your_key_here"
      }
    }
  }
}

VS Code

Requires VS Code 1.99+ with GitHub Copilot. Create .vscode/mcp.json in your project:

{
  "servers": {
    "code-sanitizer": {
      "command": "uvx",
      "args": ["mcp-code-sanitizer"],
      "env": {
        "GROQ_API_KEY": "gsk_your_key_here"
      }
    }
  }
}

Or add globally via Ctrl+Shift+P → "MCP: Add Server".

Don't have uvx? Install it with pip install uv, then use the commands above.

Manual install (alternative)

If you prefer cloning the repo:

git clone https://github.com/notasandy/mcp-code-sanitizer
cd mcp-code-sanitizer
pip install -r requirements.txt
cp .env.example .env   # add your GROQ_API_KEY
python server.py

Then point the client config to:

{
  "command": "python",
  "args": ["/full/path/to/server.py"],
  "env": { "GROQ_API_KEY": "gsk_your_key_here" }
}

GitHub Action — automatic PR review

Add AI code review to any repository in 5 lines. The action posts a structured comment on every PR with score, issues, and fix suggestions.

Shortened. The full README is on GitHub.