Tools / Site Crawler / Use Cases / Find 404 Errors Across Your Site

Find 404 Errors Across Your Site

Crawl your website to discover all pages returning 404 errors and the internal links pointing to them.

Tool
Site Crawler icon
Site Crawler

Every 404 error on your site is a dead end -- for users who hit a wall, for search engine crawlers who waste budget, and for link equity that evaporates instead of flowing to your content. Worse, you often do not know these errors exist because they only appear when following specific link paths.

ToolRouter's crawl_site skill follows every internal link on your site and records the HTTP status code of each destination. Pages returning 404 are flagged along with every source page that links to them. This gives you a complete map of broken links, not just individual pages.

Regular 404 audits are critical after content deletions, URL restructures, CMS migrations, and any deployment that changes routing. The longer 404 errors persist, the more damage they do to user experience and search rankings.

Agent Guides

Claude

  1. Connect ToolRouter: claude mcp add toolrouter -- npx -y toolrouter-mcp
  2. Ask Claude: "Crawl mysite.com and find all pages returning 404 errors"
  3. Claude crawls the site and lists every 404 with the pages that link to it
Read full guide →

ChatGPT

  1. Configure ToolRouter in ChatGPT
  2. Ask: "Crawl mysite.com and find all 404 errors"
  3. ChatGPT lists every broken page with its referring links
Read full guide →

Copilot

  1. Add ToolRouter to Copilot MCP config
  2. Ask: "Crawl mysite.com and report all 404 errors"
  3. Review the broken URL list inline
Read full guide →

OpenClaw

  1. Connect ToolRouter: openclaw mcp add toolrouter -- npx -y toolrouter-mcp
  2. Ask: "Crawl mysite.com and find all 404 errors"
  3. OpenClaw lists every 404 with referring pages
Read full guide →

Related Use Cases

Open Build a Full Site Inventory

Build a Full Site Inventory

Crawl your entire website to build a complete inventory of every page, its status, and its metadata.

Site Crawler icon
Site Crawler
4 agent guides
Open Identify Orphaned Pages

Identify Orphaned Pages

Find pages on your site that have no internal links pointing to them, making them invisible to crawlers.

Site Crawler icon
Site Crawler
4 agent guides
Open Check Internal Link Distribution

Check Internal Link Distribution

Analyze how internal links are distributed across your site to ensure important pages receive enough link equity.

Site Crawler icon
Site Crawler
4 agent guides
Open Discover Duplicate Content

Discover Duplicate Content

Find pages with duplicate or near-duplicate content that confuse search engines and dilute rankings.

Site Crawler icon
Site Crawler
4 agent guides