Currently Microsoft Power Automate omits/strips off the HTTP Content-Type Header from Flow HTTP GET Requests.
This behaviour is mentioned in the documentation:
But this behaviour seems to conflict REST API specification and makes it impossible to consume REST APIs that require the Content-Type Header in HTTP GET Requests from Microsoft Flow.
there seems to be at least some debate/unclarity on to whether Content-Type should or should not be required in HTTP GET requests:
but currently the fact remains, that Flows is unusable when trying to consume REST API that do require the Content-Type header being set on GET requests.
thanks in advance,