418 I'm a teapot
An April Fools joke status from RFC 2324.
What it means
Not a real HTTP semantic. Some servers use it as an easter egg or to refuse automated traffic.
What your client should do
Treat it as a deliberate refusal.
Should you retry?
No. Repeating the same request will give the same result.
Try it
The free practice API returns this status on demand, with the headers a well-behaved API would send. Call GET /api/play/status/418 from Endpoint Client and open the Explain tab.
Defined in RFC 2324. All status codes and headers