How to do single sign-on with forum program?

I currently have an APP, and both the backend service and the APP use Logto as the user center.

Now I want to add a forum function to the APP. My idea is to use an open source forum program and access it through the API.

For the forum program, I perfer to choose Discourse.

The question now is:

Can the APP, as the only entrance, achieve single sign-on between the above systems? For example, after opening the APP and logging in with Logto, you can directly use the forum API to post.

Has anyone done such a design? Is it feasible?

Looking forward to your answer, I will be very grateful for it. If you have any questions, I will add information in time.

I can not find the r about Discourse on reddit, so I create anthoher post: https://www.reddit.com/r/Logto/comments/1fl2qsa/how_to_do_single_signon_with_forum_program/

All the information you need should be here

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