I do not know how to solve it and even worse I think there is no easy solution, I do however know a "auth flow" on Home Assistant, and this might give you some clues as to why the "redirect" url exist. It is indeed the final step to "receive" the token used for oauth   Please login or register to see this link.   The gist of it is this:   Please login or register to see this code.   IMHO the key points are   1) When you are on the server site (eg Netatmo) you have t
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