Thanks Emil for the quick reply and the clarification.

That makes sense, just wanted to make sure I wasn't missing anything.

now: https://github.com/50ButtonsEach/fliclib-linux-hci I think

Correct me if I'm wrong, but I seem to recall that if an app wish to communicate with another app using the x-callback-url scheme, then that app needs to be in the foreground in order to send the request? If so, then it would unfortunately defeat the purpose of a button.

But please correct me if I'm wrong.

@little_master They have already been released at https://github.com/50ButtonsEach (Android, iOS, Linux currently).

Yes it's possible. If you actually get a status code such as 404 then it was the server that responded with the error code 404. Maybe you have the wrong url?

In my case it is Windows.
Do we have Flic app for windows?

There is a way, but only with custom buttons that you can order from us - go to flic.io/business to read more.

With Flic 2, the Flic App will not be needed.

@tobi-fp Hi, sorry i cannot. The steps below however should help you somewhat to implement it yourself!

As with so many technical requests your question isn't really clear enough as to what the problem is. It looks like you're using Postman to generate the code and wanting to post a multipart form. I can only point you to
https://ec.haxx.se/http-multipart.html .
You have my sympathies, curl is not the easiest to understand and API documentation rarely makes it easy to understand exactly what's necessary.