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HTTP Status Codes

Search HTTP status codes by code, meaning, category, cause, or example
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About this tool

Status Codes helps web developers, API teams, QA engineers, and support staff search HTTP response codes by number, category, meaning, cause, and example. Use it for REST API debugging, browser failures, redirect chains, auth errors, rate limits, caching behavior, and incident writeups.

Use cases

  • Look up whether a 400, 401, 403, 404, 409, 422, 429, or 500 response fits an API failure before writing a support reply.
  • Compare redirect status codes such as 301, 302, 303, 307, and 308 when documenting login, checkout, or migration flows.
  • Copy code meanings into QA bug reports so developers can distinguish client input problems from upstream service errors.
  • Review cache-related responses like 304, 404, 410, and 503 before troubleshooting CDN, browser, or proxy behavior.

FAQ

What is Status Codes best used for?

Status Codes is best used as a searchable HTTP reference for understanding response codes, status classes, likely causes, and examples during web and API debugging.

What input and output should I expect?

Search or sort by code, phrase, category, cause, or example. The output is a copy-friendly reference entry for docs, tickets, or tests.

Are HTTP status codes enough to diagnose an error?

No. The same code can have application-specific causes, so verify response bodies, headers, request IDs, logs, retries, and upstream dependencies.

What standards or edge cases matter?

HTTP semantics are standardized, but frameworks and APIs may use codes differently. Check method semantics, redirects, caching headers, proxies, and custom error payloads before changing behavior.