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My POST Body is not being received

This one trips me over all the time, lately when I’ve been triggering a HTTP POST action from Microsoft Flow.

Example fix for header on Flow


You’ve configured a POST request something like this:

Method: POST
URL:    https://my-service.example/Surface/DoThing
Body:   accessKey=NyahNyah

But your tools/logs reveal that when it the request is received, the Body is completely missing.


This is because this Body format with key=value is only understood at the server if you send a content-type header of application/x-www-form-urlencoded

So the solution is to set the content-type header to application/x-www-form-urlencoded

In Flow, you can do this as pictured.

Future Ste, you’re welcome.