Convention for HTTP response header to notify clients of deprecated API
I would not change anything in the status code to be backward compatible. I would add a “Warning” header in the response : Warning: 299 – “Deprecated API” You can also specify the “-” with the “Agent” that emits the warning, and be more explicit in the warn-text : Warning: 299 api.blazingFrog.com “Deprecated API: use … Read more