HTTP 200 OK is the standard success response indicating that the request has been fulfilled. The meaning varies by HTTP method: for GET, the resource is returned in the body; for POST, the result of the action is described; for HEAD, only headers are sent without a body. While seemingly simple, proper use of 200 OK — versus more specific success codes like 201 Created or 204 No Content — significantly impacts API design quality, caching behavior, and client-side logic.
Response includes the status code, standard headers (including Content-Type), and a small diagnostic JSON body describing the request and returned status.
Simulator URL (copy in the app after load — not a normal link):
https://httpstatus.com/api/status/200
Example request:
curl -i "https://httpstatus.com/api/status/200"