Status you can feel
Eight moods map to real agent events: idle, listening, thinking, working, needs approval, done, error and sleeping. Kelvin never looks happy about a task that failed.
Desktop companion
An AI desktop companion that shows what your agents are doing.
Kelvin is a small penguin that lives on your Windows desktop, like a desktop pet for your AI agents. Drag Kelvin anywhere; Kelvin thinks while your AI thinks, works while it runs tools, holds up a “may I?” card when it needs approval, and celebrates when the job is done.
Kelvin, the RAPR AI penguin, shows what every agent is doing.
Always on top, draggable anywhere, remembers its spot across monitors
Click Kelvin to jump straight to a waiting approval; double-click to open RAPR
Tray badge colours and Windows notifications for approvals
Animated, still or hidden; every Kelvin feature has a switch
Never in your way
No pop-ups and no chatter. Kelvin speaks up only when an agent needs you, dozes off when nothing is happening, and hides with one click.
Part of RAPR AI
Kelvin is built into RAPR AI, the free desktop app for running Claude, Gemini, Codex and Ollama agents. Kelvin is available from source today and comes to the installer in the next release.
Questions people ask
Short answers for the search terms around ai desktop companion.
What is an AI desktop companion?
A small on-screen character that reflects what your AI tools are doing, so you can see progress and approvals without opening the app.
Does Kelvin work on Mac or Linux?
Desktop Kelvin is Windows-only for now, like the RAPR AI desktop app. Kelvin also appears in the RAPR web UI and on Telegram.
Can I move Kelvin to another monitor?
Yes. Drag Kelvin anywhere. RAPR remembers the position and brings Kelvin back on screen if that monitor is disconnected.