HTTP headers parser · Guide
Debugging API Request Headers
Many API failures come down to a header. Parsing the request headers is the fastest way to find which one.
Check content type and auth
A missing or wrong Content-Type, or a malformed Authorization header, causes a large share of API errors. Parse the headers and confirm both are exactly as the API expects.
Spot the unexpected
A structured view makes stray or duplicated headers obvious — useful when a proxy or client library adds something you did not intend.
Frequently asked questions
Can I use this for production work?
Yes, for inspection, formatting and quick generation. Still review the output before committing it to production code or configuration.
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