I'm not too up on which documents here are current but at least: > A payload within a GET request message has no defined semantics; > sending a payload bod

I'm not too up on which documents here are current but at least: > A payload within a GET request message has no defined semantics; > sending a payload body on a GET request might cause some existing > implementations to reject the request. https://tools.ietf.org/html/rfc7231#section-4.3.1 https://tools.ietf.org/html/rfc7231#section-4.3.1