Rat Radar

Connect it to your AI

Claude Code

claude mcp add --transport http rat-radar https://rat-radar.github-a18.workers.dev/mcp

Claude, ChatGPT, Cursor and other apps

Add it as a custom connector with this URL (Streamable HTTP):

https://rat-radar.github-a18.workers.dev/mcp

Cursor, VS Code and other apps (mcp.json)

{
  "mcpServers": {
    "rat-radar": {
      "url": "https://rat-radar.github-a18.workers.dev/mcp"
    }
  }
}

Tools it offers

8 tools, as the server itself reported during our check on Oct 31, 2026.

• check_siteCan I scrape this site, and how? Returns a verdict (open, guarded, hostile, blocked), a hostility score, a recommended approach with steps and risks, bot protections, robots.txt and AI-crawler policy, machine-readable su
• get_playbookWhat should I build with this site, and how? Give a domain and, optionally, a goal in plain words (for example "price alerts", "sales leads", "new jobs", "change log", "knowledge base"). Returns the best-matching workflo
• list_sitesList the sites in the dataset, optionally by category or verdict. Use it to find easy targets or to see what is covered.
• xray_pageHow do I extract the data from THIS page? Fetches one public page and returns a ranked extraction plan: embedded JSON, JSON-LD, repeated records with CSS selectors and field names, tables, feeds, hidden API calls. Each s
• xray_diagramDraw a page's anatomy as an Excalidraw diagram: its regions, the ranked ways to get its data, proof rows, the best route and what the page is made of. Returns a download link for the .excalidraw file (give it to the user
• search_sitesFind sites in the dataset by a word: a name, host, category (jobs, shop, news, gov), country or verdict. Use it to discover what is covered before calling check_site.
• can_fetchDoes robots.txt allow fetching this exact URL? Fetches the live robots.txt and applies the longest-match rule for a user agent (default: * plus GPTBot, ClaudeBot, Google-Extended, CCBot, PerplexityBot). Returns allowed o
• summaryHeadline numbers across the dataset: verdict mix, how many sites block AI crawlers (and which), protection vendors, by category and country.

Questions