OPenClaw API Error Troubleshooting: How to Fix 401, 500, and Connection Timeout Issues

When calling the OPenClaw API, you'll often run into 401 Unauthorized, 500 Internal Server Error, or connection timeouts. These errors not only interrupt your workflow but can also lead to data loss. This article covers the three most frequent error codes, from root cause analysis to repair steps, helping you restore service fast.

401 Unauthorized: Expired Key or Insufficient Permissions

A 401 error usually means your API key is invalid or lacks the required permissions for the resource. Start by checking if the key has expired or been revoked—log into the OPenClaw console to view key status. If the key is still valid, verify that it has the correct scope (permissions) for the endpoint you're calling.

Fix: Generate a new key and replace the old one in your code immediately. If the problem persists, double-check the Authorization header format—it must be Bearer your_key. Also, some advanced features require a plan upgrade, so confirm your subscription covers the endpoint you're using.

500 Internal Server Error: Server Issues and Retry Strategy

A 500 error means OPenClaw's server experienced an internal fault—nothing to do with your client configuration. Common causes include temporary overload, database errors, or bugs from a recent deployment. When you see this, don't change your code right away. Instead, wait 30 seconds and retry the request.

If retries keep failing, check OPenClaw's official status page (status.openclaw.io) to confirm service health. If the status page shows everything is normal, try switching to a different API endpoint or downgrading to an older version of the interface (e.g., v1 → v0) to bypass the issue. Also, implement exponential backoff in your code to avoid hitting rate limits and getting blocked.

Connection Timeout and Network-Level Errors

Timeout errors (like TimeoutError or ETIMEDOUT) are usually caused by unstable networks, incorrect proxy settings, or slow OPenClaw server responses. First, check if your local network can reliably reach the internet—try pinging api.openclaw.io to see if packets are dropped. If you're behind a corporate proxy, make sure the proxy is configured correctly and that HTTP_PROXY and HTTPS_PROXY are set in your system environment variables.

OPenClaw's free plan has strict rate limits. Exceeding them will cause requests to be dropped, leading to timeouts. Add rate limiting to your code (e.g., max 5 requests per second) and set a reasonable timeout (30 seconds is recommended). If timeouts persist, consider upgrading to a paid plan for higher concurrency quotas.