x402-sentinel-mcp

MCP server for x402 Sentinel — quality verification data for 12,000+ x402 endpoints.

What it does

Gives your AI assistant (Claude Code, Cursor, ChatGPT) access to:

• Catalog: Find x402 endpoints by category, ranked by quality score
• Badge: Quick verified/not-verified check for any endpoint
• Score: Detailed quality breakdown (schema, consistency, cross-ref, LLM judge)
• Scan: Run a fresh deep quality scan on any endpoint

Quick Setup (Claude Code)

claude mcp add sentinel -e SENTINEL_API_KEY=your-key -- npx x402-sentinel-mcp

Manual Setup

Add to your MCP config:

{
  "mcpServers": {
    "sentinel": {
      "command": "npx",
      "args": ["x402-sentinel-mcp"],
      "env": {
        "SENTINEL_API_KEY": "your-key"
      }
    }
  }
}

Usage

Once configured, just ask your AI:

• "Find me a reliable web scraping x402 endpoint"
• "Is this endpoint trustworthy? https://..."
• "Run a quality scan on https://..."
• "What categories of x402 endpoints exist?"

Environment Variables

| Variable | Required | Description | |----------|----------|-------------| | SENTINEL_API_KEY | Yes (for score/scan) | API key for internal endpoints | | SENTINEL_URL | No | Sentinel server URL (default: https://x402-sentinel.fly.dev) |