> Cute, but, I question the value I came here just to say that. What an half-baked idea. It might be trivial to mindlessly bolt on response headers, but if the

> Cute, but, I question the value I came here just to say that. What an half-baked idea. It might be trivial to mindlessly bolt on response headers, but if the goal is that the mechanism needs to be impactful and have consequences then the response header is a big red herring as you're actually relying on clients to implement support for sunsetting the endpoints. If that's the case then you already have meaningful mechanisms, such as passing this sort of metadata in responses to requests for the root resource. This is something that pretty much any HATEOAS spec already supports.