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Four things Cetus adds to your agent
Quick Launcher — your agent, one hotkey away
Hold both ⌘ keys to summon your agent over any app. Cetus brings along the current screenshot, frontmost app, browser URL, and selected text as removable context chips, so you can ask in place instead of stopping to explain what you are looking at.
Automations — let it work while you are away
Turn any prompt into a one-off or recurring job (at / every / cron / daily). Each run keeps its chosen runtime and model settings, works in a fresh background conversation, and leaves the result ready for you to review.
Global Quick Reply — draft the answer without leaving the thread
Double-tap right ⌥ on any conversation — a team channel, an email, a support console — and Cetus reads what is on screen, then streams a draft into an editable panel. It follows the language and register of the thread and answers what was actually asked, so a message with three open questions does not come back as "sounds good". Press ⏎ to drop it into the input you were already in, or ⇥ to redraft the same screen on another runtime.
Screen Context — let it remember what you were doing
With screen context on, Cetus periodically captures frames, dedupes them, and OCRs them on-device with Apple Vision. Your agent can later recall what was on screen or search the history by text and app. Images and text stay on your Mac; capture is opt-in, with retention controls and an excluded-apps list.
Get started
The prebuilt app supports Apple Silicon and macOS 13 or later.
- Download the latest release.
- Open the DMG and move Cetus to Applications.
- Use the built-in Cetus runtime, or select an already installed and signed-in
claude,codex, ordsh(DeepSeek Harness) CLI. - Choose a workspace and give the agent its first task.
Claude Code, Codex, and DeepSeek Harness reuse their existing CLI login — there is no second account to configure. Building from source is documented under Development.
Early release: Cetus is under active development. Please open an issue if something breaks or if a workflow is missing.
Everything else
Keep the runtime you already trust
Use the built-in pi runtime, Claude Code, Codex, or DeepSeek Harness with the models, tools, and login you already have. Cetus translates each runtime into the same desktop workflow while preserving conversation context and background terminals across replies.
Pick a workspace, choose a runtime, optionally attach files or a screenshot, and send. For parallel coding tasks, enable per-conversation git worktrees so each agent edits an isolated checkout.
Review background work in one place
Every conversation is a card tracked across In progress · Needs review · Done. Automations, long-running tasks, and parallel solutions all surface here instead of getting buried in terminal sessions.
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