Search HTTP response codes quickly and keep practical API guidance close while you build or debug endpoints.
Status Search
Search by code, title, category, or common usage notes.
Selected Status
100 Continue
Informational reference ready
100 Continue
The server has received the request headers and the client may continue sending the body.
Use When
Useful for large uploads where the client waits for permission before sending the payload.
Avoid When
Do not send it for normal small requests where the client is not expecting an interim response.
How To Use
Search by number like 404, by concept like validation, or by group like server error.
The guidance is intentionally practical for API design and debugging, so it focuses on when each status is the right fit and when a different code would be clearer.