418
I’m a teapot
4xx Client error
Class
RFC 2324 / RFC 9110 §15.5.19
Defined in
What does HTTP 418 mean?
An April Fools’ joke from the Hyper Text Coffee Pot Control Protocol (1998). The code is reserved and not used by real servers, though some sites and frameworks return it as an Easter egg or to answer bots they want to discourage.
4xx Client error: The request has a problem the client can fix: wrong URL, missing credentials, bad data or too many requests.
418 and SEO
Do not return 418 to crawlers — it is treated as a client error and the page is not indexed.
Example response
HTTP/1.1 418 I’m a teapotRelated status codes
- 400 Bad Request — The server cannot process the request because it is malformed.
- 403 Forbidden — The server understood the request but refuses to authorise it.
- 503 Service Unavailable — The server is temporarily unable to handle the request.
Check which status code a URL returns with the HTTP header checker.
All HTTP status codesSearch the full list of status codes from 100 to 599 with their meanings and SEO impact.
Open the full list Frequently asked questions
What does status code 418 mean?
418 I’m a teapot: An April Fools’ joke from the Hyper Text Coffee Pot Control Protocol (1998).
Does 418 affect SEO?
Do not return 418 to crawlers — it is treated as a client error and the page is not indexed.