100 Continue
Server received request headers. Client should proceed to send request body.
copy 101 Switching Protocols
Server agrees to switch protocols as requested by the client (e.g., WebSocket upgrade).
copy 102 Processing
Server received and is processing the request, but no response is available yet.
copy 103 Early Hints
Used to return response headers before the final response, allowing preloading resources.
copy 200 OK
Request succeeded. Standard response for successful HTTP requests.
copy 201 Created
Request succeeded and a new resource was created. Common for POST requests.
copy 202 Accepted
Request accepted for processing but not yet completed. Used for async operations.
copy 204 No Content
Request succeeded but no content to return. Common for DELETE requests.
copy 206 Partial Content
Server is delivering only part of the resource due to a Range header sent by the client.
copy 301 Moved Permanently
Resource permanently moved to a new URL. All future requests should use the new URL.
copy 302 Found
Resource temporarily moved to a different URL. Client should continue using the original URL.
copy 304 Not Modified
Resource has not been modified since last request. Use cached version.
copy 307 Temporary Redirect
Like 302, but the HTTP method must not change in the redirected request.
copy 308 Permanent Redirect
Like 301, but the HTTP method must not change in the redirected request.
copy 400 Bad Request
Server cannot process the request due to malformed syntax or invalid parameters.
copy 401 Unauthorized
Authentication required. Client must provide valid credentials.
copy 403 Forbidden
Server understood the request but refuses to authorize it. Valid credentials but insufficient permissions.
copy 404 Not Found
Requested resource does not exist on the server.
copy 405 Method Not Allowed
HTTP method used is not allowed for this resource (e.g., POST on a GET-only endpoint).
copy 408 Request Timeout
Server timed out waiting for the client request.
copy 409 Conflict
Request conflicts with the current state of the resource (e.g., duplicate entry).
copy 410 Gone
Resource is permanently deleted and will not be available again. Stronger than 404.
copy 413 Payload Too Large
Request body exceeds the server-defined limit.
copy 415 Unsupported Media Type
Server does not support the media format of the request body.
copy 422 Unprocessable Entity
Request is well-formed but contains semantic errors (e.g., invalid field values).
copy 429 Too Many Requests
Client sent too many requests in a given time (rate limiting).
copy 500 Internal Server Error
Generic server error. Something unexpected went wrong on the server side.
copy 501 Not Implemented
Server does not support the functionality required to fulfill the request.
copy 502 Bad Gateway
Server acting as a gateway received an invalid response from the upstream server.
copy 503 Service Unavailable
Server temporarily unable to handle the request (overloaded or under maintenance).
copy 504 Gateway Timeout
Server acting as a gateway did not receive a timely response from the upstream server.
copy