Is it permissible to include the request body in an HTTP GET method?

According to the HTTP specification, GET requests are not intended to carry a request body, and most servers and proxies ignore the body in GET. Although technically HTTP/1.1 does not prohibit a body in GET, its use is not standard practice and can lead to unpredictable behavior.

Therefore, including a body in GET requests is not recommended. To transmit data, it is better to use URL parameters (query string) or other methods, such as POST or PUT, if you need to send a body.