Modes & Settings

When you chat with Starcat, you pick a mode from the selector in the chat input. The mode decides how much Starcat is allowed to do.

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Modes

Starcat runs in one of four modes. Agent mode is the default. In Agent mode you can also turn on developer agents so Starcat can create apps and dispatch work to projects. See Allowing developer agents below. When Starcat Developer is building across your apps in a workspace session, you’ll also see Ultra at the top of the mode list — a max-power version of Agent mode. It doesn’t appear in a normal Starcat chat. See Starcat Developer Ultra.

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Model

Starcat runs on Claude Sonnet 5.5, the same model as Starcat Developer. There’s no tier to choose; every message uses the same model.

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Ultra

Ultra is a max-power version of Agent mode that runs Starcat Developer with parallel write agents and end-to-end self-validation. On the organization side it appears in workspace sessions, where it also adds a per-run credit budget. It’s the setting to reach for on a substantial change you want built, verified, and handed off in one go. Ultra is in alpha and rolls out gradually. For the full breakdown — including how to prompt it — see Starcat Developer Ultra.

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Conversation Settings

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Chat visibility

Every conversation has a visibility you set from the chat’s settings:

• Personal — only you can see the chat. This is the default.
• Shared with org — anyone in your organization can see it.

Visibility is per-chat, and you can change it at any time. The toggle works the same whether you’re in the standalone dashboard or the Starcat sidebar next to an app you’ve opened. Use Shared with org for work your team should be able to follow or pick up.

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Allowing developer agents

By default Starcat answers questions and operates your existing apps. Building new apps and dispatching work to each project’s Starcat Developer is gated behind a per-conversation toggle. Turn on developer agents for a chat when you want Starcat to coordinate changes across your projects. Operating your apps’ APIs doesn’t require this toggle; it’s controlled separately by each app’s Allow agent access setting.

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