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Popular API Errors

Popular Errors:

Frequently Asked Questions about API Errors & HTTP Status Codes

What is a 401 error?
This means unauthorized access – usually due to an invalid or missing API token. Check your authentication credentials and ensure they're properly included in the request headers.
What is a 403 error?
A 403 Forbidden error means you're authenticated but don't have permission to access the resource. Check your API access levels and permissions.
What is a 404 error?
The endpoint could not be found – check the path or resource name. This often occurs when the URL is incorrect or the resource has been moved or deleted.
What is a 500 error?
A 500 Internal Server Error indicates a problem with the server. This is not your fault as a client – the server failed to fulfill a valid request.
How does this tool help?
You paste a status code and get instant causes, curl commands, and troubleshooting steps. Our tool provides real-world examples and practical solutions for common API errors.
Is this tool free?
Yes! This tool is completely free to use. We provide instant error explanations, curl commands, and troubleshooting guides with no registration required.