Hi @Matias.Monday,
thanks for your reply!
That’s not exactly what I need, no. I would like to get the token right from the start, not just when a user opens an item. The reason: as soon as the app is installed I want to setup their website, and need to make api requests right from the get go.
I found that when you use an integration for sentence builder feature I can add an autzorization url, which will be used for the oauth. If I then add the integration feature as a starting point for the app, the oauth will be triggered right after install. Which is exactly what I want.
The only problem with that solution is, that I then no longer can use a specific template as a starting point. 
I then tried something else.
I added the automation to the template that I’m using as a starting point:
The board which I added the automation, is used as a starting point in my app:
I then switched to a different account, installed the app, and clicked on “Use App”:
This triggered the onboarding flow, which successfully copied the template to my workspace, and added the automation that I’ve setup.
I did not trigger a oauth request though.
So when the automation triggered (by creating a new item), I received the request on my server, but couldn’t make an api call because I didn’t have a valid access token.
In my opinion, the puzzle piece that is missing is a standalone “connect via oauth” feature, similiar to what is included in the “integration for sentence” feature, which triggers an oauth flow, after the installation of an app.
It could also include a backToUrl param, which we could use to redirect the user back to finish the onboarding…to whatever we have setup as the starting point (specific feature, or template).