Beginner15 min5 steps5 tools

Debug a Failing API Request

Problem this workflow solves

You have a cURL command or API call that returns unexpected results, errors, or wrong data — and you need to diagnose why.

Steps

1
Convert the failing cURL to readable code
Paste the cURL command that is failing. The converter breaks it into method, URL, headers, and body so you can see every parameter clearly.
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2
Format and inspect the request body
Paste the raw JSON request body into the formatter. Pretty-print it to spot missing fields, wrong types, or malformed keys at a glance.
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3
Validate your authentication token
If the request uses a JWT, paste it here to decode the header and payload. Check that the token is not expired and that the claims match what the API expects.
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4
Analyze the response payload
Paste the API response to scan for unexpected sensitive fields, error messages embedded in data, or structural issues that might indicate a misconfiguration.
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5
Rebuild the corrected request as cURL
Once you have identified the fix, convert your corrected code snippet back to a clean cURL command to verify it works before updating your implementation.
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What you achieve

You identify the root cause of the API failure — whether it is a malformed request, expired token, or unexpected payload — and have a corrected, working request ready to test.