Ability to set agent to use

[IeuanWalker]

In the CLI you can set the agent you want to use -

From what i can see with the SDK you can only give it a list of Agents to use -

    public List<CustomAgentConfig>? CustomAgents { get; set; }

With no option to set which one to use manually. In the custom agent model there is an Infer boolean property which means when set to false that agent wont be used automatically, but without a way to manually set one whats the point of it?

public bool? Infer { get; set; }

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Also based on the docs should Infer be changed to DisableModelInvocation, to match the docs -
https://docs.github.com/en/copilot/reference/custom-agents-configuration#:~:text=disable%2Dmodel%2Dinvocation,to%20true.

[github-actions]

Thanks for opening this issue, @IeuanWalker!

You've raised a great point about the ability to manually select which custom agent to use (similar to the CLI), and also highlighted a potential naming inconsistency with the Infer property vs the documented DisableModelInvocation.

Labels applied:

• enhancement — Feature request for manual agent selection
• sdk/dotnet — .NET SDK specific
• documentation — Property naming alignment with docs

The team will review this and provide feedback on the proposed enhancements.

AI generated by Issue Triage Agent

[SteveSandersonMS]

This will be supported once #544 is merged.

[IeuanWalker]

Thanks @SteveSandersonMS

2 questions if dont mind answering -

• The plan mode in the CLI is that just a built-in agent?
• Does the SDK automatically pick up instruction files in the working directory you give it? Or do you have to manually pick them up and feed them into the SystemMessage property?