You mean this one? The one that no browser actually does anything with? https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/402 https://developer.mozilla.

You mean this one? The one that no browser actually does anything with? https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/402 https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/402 "The HTTP 402 Payment Required is a nonstandard client error status response code that is reserved for future use." Of course, I guess "this is actually just a concept now but we promise it will be meaningful in the future" is actually something HTTP 402 has in common with Project Xanadu. (zing!)