Complete Guide to OPenClaw Error Codes: Troubleshooting 404 to 429

It happens to many users: an error code suddenly pops up while scraping data with OPenClaw, and the page freezes, bringing progress to a halt. The good news is that most error codes are quite specific—once you know how to diagnose them, you can usually resolve the issue in just a few minutes. Below are the actual troubleshooting steps for the most frequent errors.

404 Not Found: Broken Resource Path or API Endpoint

When you see a 404, first check if the target URL is complete—especially paginated links with parameters or dynamic paths. OPenClaw may return a 404 when trying to access certain protected pages. In that case, verify manually whether the link opens correctly in a browser. For API endpoints, confirm the version number (e.g., /v1/) in the request URL matches the documentation.

Some websites deliberately return a fake 404 to block scrapers. Try adding a realistic User-Agent and Referer to OPenClaw’s request headers to simulate a normal browser visit. If the error persists, the resource has likely been taken down or relocated—update your scraping source accordingly.

429 Too Many Requests: Rate Limit Triggered

This code means your request speed has exceeded the server’s tolerance. OPenClaw’s default concurrency settings may be too high. Lower the requests per second (RPS) by reducing concurrent threads to 2–3 and adding a delay of 500ms–1s between requests.

If the target site requires login, check whether repeated authentication within a short period triggered risk control. Switching to a different IP proxy pool can also help bypass some 429 limits, but make sure to use quality proxies—avoid public transparent ones.

502 Bad Gateway / 504 Gateway Timeout: Server or Proxy Issues

Both 502 and 504 indicate an abnormal response from upstream servers. Start by testing whether the target website itself is accessible—open it in a browser. If the site works fine, the issue is likely a timeout or failure of the proxy node used by OPenClaw. Switch to another proxy node, or disable proxies entirely and retry with your local network.

Another possibility is that the target website uses CDN protection, and OPenClaw’s request is intercepted at the edge node. In this case, try increasing the request timeout (e.g., from 30s to 60s) and avoid overly frequent HTTP/2 connections.

Every error code has a corresponding solution. What beginners often overlook is request simulation and rate control. Instead of rushing to reinstall the software, follow the steps above—and nine out of ten issues can be fixed on your own.