Setup
Add a custom model
Point idapt at a model it does not ship with.
Fill it in
What to call it in the picker.
What the provider calls it.
The key that reaches it.
Your prompt
Add [your name] as a custom model.
Upstream id: [your model id]. Key: `${credential:${credential:API_KEY}}`.
Use `custom-models create`. It becomes `custom/[your name]` in the picker.
Then send one short prompt through it and report the response. A model that
appears in the picker and fails on first use is worse than one that was never
added, because the failure arrives mid-task.Continue and add your fileOpens with everything above already filled in.