What is
What is HTTP Status Code Explorer?
An HTTP Status Code Explorer helps you turn raw API failures into a more useful debugging sequence. Instead of treating status codes as a static reference table, you can compare common lookalikes such as `401` vs `403`, `400` vs `422`, or `429` vs `503` while keeping the next checks close at hand.
This is especially helpful during incident response and day-to-day API debugging, where a single code often sends teams down the wrong branch. A status explorer reduces that drift by pairing each code with a realistic production scenario and a shorter checklist for what to inspect next.
How to use
How to use HTTP Status Code Explorer
Search by code, title, or symptom such as `timeout`, `forbidden`, or `validation`, then narrow the list with the `2xx`, `3xx`, `4xx`, and `5xx` filters. Select a status to view its meaning, a realistic production scenario, the next checks to make, and nearby codes that are commonly confused with it.
When you want to share the result with a teammate, use `Copy summary` to capture a compact explanation and checklist for tickets, Slack threads, or handoff notes.
Example
Example
Example:
An API login call returns 401 in staging but 403 in production.
How to use the tool:
1. Open 401 and verify missing header, token expiry, issuer, or audience problems.
2. Compare 403 and check whether the token is valid but the role or scope is insufficient.
3. Copy the summary so the team aligns on whether this is an authentication problem or an authorization problem.Common use cases
Common use cases
1. Comparing `401`, `403`, and `404` before changing auth logic blindly.
2. Distinguishing malformed requests (`400`) from validation failures (`422`).
3. Separating rate-limit incidents (`429`) from temporary service degradation (`503`).
4. Building faster incident notes during API outage triage.
Frequently asked questions