If it doesn’t work then you’ll need to do it another way. I’m assuming you are on file:// instead of having it served from a server, so you are probably out of luck here. I do all my stuff via server since it’s just easier to manage the keys
Auth is better held on a remote server so it can be auto refreshed/managed nicely. Without leaking your secret
The alternative is that a user gets a token from somewhere and manually pastes it into your code/query string argument in OBS, but then when the key dies (even using implicit) it’ll require user interaction, as manual copy paste probably means implicit auth and when that key dies you don’t have a refresh token to auto renew,