418 I'm a teapot client error response code indicates that the server refuses to brew coffee because it is, permanently, a teapot. A combined coffee/tea pot that is temporarily out of coffee should instead return 503. This error is a reference to Hyper Text Coffee Pot Control Protocol defined in April Fools' jokes in 1998 and 2014.
418 I'm a teapot
|RFC 2324, section 2.3.2: 418 I'm a teapot||Hyper Text Coffee Pot Control Protocol (HTCPCP/1.0): Semantics and Content|
|RFC 7168, section 2.3.3: 418 I'm a teapot||The Hyper Text Coffee Pot Control Protocol for Tea Efflux Appliances (HTCPCP-TEA): Response Codes|
BCD tables only load in the browser
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.