HTTP 418 I'm a Teapot (RFC 2324)


The HTTP 418 I'm a teapot status code is a humorous and intentionally absurd response code specified in RFC 2324, part of the Hyper Text Coffee Pot Control Protocol (HTCPCP). This code is not intended to be implemented seriously and is included as an Easter egg in the world of web development.


The HTTP 418 response is meant to be a playful and fictional status code, and it is not expected to be used in actual HTTP communication.


Client Behavior:

  1. Send Request: The client sends an HTTP request to the server.
  2. Receive Response: In a hypothetical scenario where the server humorously implements HTCPCP, the client might receive an HTTP 418 response.

Server Behavior:

  1. Evaluate Request: In a fictional HTCPCP scenario, the server might evaluate the request and respond with an HTTP 418 status code as part of the joke.


  • April Fools’ Joke: The HTTP 418 status code is often associated with playful and whimsical responses on April Fools’ Day.

Sequence Diagram

As the HTTP 418 status code is not meant for serious usage, a sequence diagram is not applicable.

Example Response

In a playful scenario, an HTTP 418 response might look like this:

HTTP/1.1 418 I'm a teapot
Date: Wed, 01 Apr 2023 12:00:00 GMT
Content-Length: 35
Content-Type: text/plain

I'm sorry, but I'm just a teapot!


  • The HTTP 418 status code is not a standard part of regular HTTP communication and should not be implemented in serious applications.
  • It is often used as a fun and lighthearted reference in the context of HTCPCP and web development humor.

HTTP 417 Expectation Failed HTTP 420 Enhance Your Calm (Twitter)


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