Ability to specify a custom agent when creating a session

[haoranpb]

The Copilot SDK allows defining a list of custom agents, but there's no way to specify which agent should be active when creating a session.

Would like the ability to programmatically invoke a specific custom agent without relying on model inference or prompt-based selection.

e.g. in Copilot CLI

copilot --agent MyCustomAgent

SDK equivalent:

session = await client.create_session({
    "agent": "MyCustomAgent"
})

[github-actions]

Thanks for opening this issue, @haoranpb!

This is a clear enhancement request for adding the ability to programmatically specify which custom agent should be active when creating a session. I've labeled this as enhancement.

The examples you provided (both CLI and Python SDK) are helpful for understanding the desired API. This would indeed provide more explicit control over agent selection compared to relying on model inference.

AI generated by Issue Triage Agent

[patniko]

Are you looking to use this to add custom built-in agents the harness can use or trying to instantiate the whole SDK with that agent? Curious to know more about your specific use case.