How to Find 404 Errors with Claude
Find all 404 errors on your site using Claude and ToolRouter. Fix broken pages before they hurt SEO.
Tool
Claude crawls your site to find every 404 error and helps you triage them intelligently. After finding broken pages, discuss which ones get the most traffic, ask Claude to suggest redirect targets for each 404, or have it generate a complete redirect map you can implement in your web server configuration.
Connect ToolRouter to Claude
1Go to Settings → Connectors → Add custom connector
2Enter the details below and click Add
Name
ToolRouterURL
https://api.toolrouter.com/mcp3Done — works on Claude chat, desktop, and mobile
Steps
Once connected (see setup above), use the Site Crawler tool:
- Ask Claude: "Crawl mysite.com and find all pages returning 404 errors"
- Claude crawls the site and lists every 404 with the pages that link to it
- Ask: "Which 404s are linked from the most pages? Those are the highest priority."
- Claude suggests redirects or content fixes for each broken URL
Example Prompt
Try this with Claude using the Site Crawler tool
Crawl mysite.com and find every 404 error. For each one, show me which pages link to it and suggest a redirect target.
Tips
- Claude can generate a redirect map in your server format (nginx, Next.js, Vercel)
- Prioritize 404s that are linked from high-traffic pages
- Run after every major content cleanup or URL structure change