HTTP Status Codes

Continue

Request received, keep going.

Switching Protocols

Server is switching protocols.

OK

Standard success response.

Created

Resource created successfully.

Accepted

Accepted for processing, not completed.

No Content

Success with no response body.

Partial Content

Serving part of the resource (ranges).

Moved Permanently

Resource has a new permanent URL.

Found

Temporary redirect.

Not Modified

Cached copy is still valid.

Temporary Redirect

Repeat with the same method.

Permanent Redirect

Permanent, keep the method.

Bad Request

Malformed request the server won’t process.

Unauthorized

Authentication required or failed.

Forbidden

Authenticated but not allowed.

Not Found

Resource does not exist.

Method Not Allowed

HTTP method not supported here.

Conflict

Request conflicts with current state.

Gone

Resource permanently removed.

I’m a teapot

Cannot brew coffee (an April Fools joke).

Unprocessable Entity

Well-formed but semantically invalid.

Too Many Requests

Rate limit exceeded.

Internal Server Error

Generic server-side failure.

Not Implemented

Server doesn’t support the functionality.

Bad Gateway

Invalid response from an upstream server.

Service Unavailable

Server overloaded or down for maintenance.

Gateway Timeout

Upstream server did not respond in time.