lightmy.dayINSTANT ANSWERS

Client error

HTTP 418: I'm a Teapot

HTTP 418 is an unused known code commonly remembered as I'm a teapot.

Meaning

It is not a normal production error response and should not be used for ordinary failures.

Common causes

You usually see it in jokes, tests, demos, or compatibility references.

What to check

Do not troubleshoot it like a normal server error. Check whether the app intentionally returns it.

Example response

HTTP/1.1 418 I'm a Teapot

References

Registry: IANA HTTP Status Code Registry
Spec: RFC 9110 §15.5.19
Guide: MDN 418 I'm a teapot

Related HTTP status codes

Nearby codes often answer the next debugging question.

400 Bad RequestHTTP 400 means the server could not understand the request.404 Not FoundHTTP 404 means the server could not find the requested resource.422 Unprocessable ContentHTTP 422 means the request syntax is valid but the content cannot be processed.