I want to use my Laravel Passport and Breeze app to authenticate a pure standalone PHP app, a node API, and another database system using OAuth2.

Multiple users will use these apps, and I would like to create an SSO, so they don't have to connect on each or manually enter client id and secret.

I tried the PHP League OAuth Client https://oauth2-client.thephpleague.com/usage/ and the passport.js, and everything works fine with the Laravel Passport app I have to enter the client ID and the secret manually. So I want to find a connecting flow so that users don't have to do so.

Which flow would you suggest to me? Do you have any examples I could learn from?