I've noticed a bit of an omission in the frame spec (at least how it's implemented on farcaster) which states a frame server must respond to a post button click POST request with a 200 OK.

In practice it can also respond with a redirect resolving to a 200 OK, but ONLY IF that redirect uses status code 303. Any other 3xx code results in: Frame server error: MaxRedirectsError: Redirected 10 times. Aborting.

Is this intended / expected behaviour?

I've noticed a bit of an omission in the frame spec (at least how it's implemented on farcaster) which states a frame server must respond to a post button click POST request with a 200 OK.

In practice it can also respond with a redirect resolving to a 200 OK, but ONLY IF that redirect uses status code 303. Any other 3xx code results in: Frame server error: MaxRedirectsError: Redirected 10 times. Aborting.

Is this intended / expected behaviour?

https://docs.farcaster.xyz/developers/frames/spec#response-frames

Apologies for misleading use of "farcaster" when I should have said "warpcast" above :).