Stop telling AI what to do. Have it done.
Protinus is a desktop agent that finishes the work. Say what you want — it searches, plans, and executes across your apps, browser, and files. You approve the final step.
macOS and Windows. Free during beta.
> You
Book me on the 6 PM flight to SF tomorrow, aisle seat.
> Protinus · plan
- 01Open United, search SFO arrivals
- 02Pick UA 357, 6:05 PM departure
- 03Select aisle seat 14C
- 04Pre-fill traveler details
- 05Awaiting your payment confirmation
How work used to flow. Protinus closes the last gap.
Every task has four stages: goal → search → plan → execute. You bring the goal. Tools have only ever helped with the middle.
| Stage | ChatGPT | Protinus | |
|---|---|---|---|
| Search | Yes | Yes | Yes |
| Plan | — | Partial | Yes |
| Execute | — | — | Yes |
Search
- Yes
- ChatGPT
- Yes
- Protinus
- Yes
Plan
- —
- ChatGPT
- Partial
- Protinus
- Yes
Execute
- —
- ChatGPT
- —
- Protinus
- Yes
Plans turn into clicks. Without you doing the clicking.
Demo · 45s
Three quick tasks. No narration. Protinus searches, plans, executes — stops at the irreversible step.
Recorded in real time. No cuts inside tasks.
One agent. Every app you already use.
Protinus drives your browser, your inbox, your files, your dev tools — the surface you actually do work on. No new app to learn. No new tab to live in.
Browser
Compares prices across tabs.
Email
Drafts replies in your tone.
Chat
Catches you up on the thread.
Docs
Pulls structure out of a PDF.
Files
Sorts Downloads by type and date.
Dev tools
Updates every CLI to the latest stable.
Design
Exports every artboard as PNG.
Photos
Surfaces 47 photos of your dog.
Calendar
Books the table after holding the slot.
Shopping
Stops at the checkout button.
Music
Builds the playlist from your prompt.
System
Restores your old laptop’s setup.
Cancel a subscription
The hard way, one sentence away.
Manual
≈ 8 min
With Protinus
≈ 12 sec
Numbers averaged across Adobe, NYT, Spotify, and four other subscriptions Protinus handles end-to-end.
How Protinus works.
- 01
You state the goal.
“Book the train.” “Clean up these photos.” “Send a polite decline to the email I have open.” Type or speak in plain English.
- 02
Protinus plans before it acts.
Protinus reads what’s on screen, picks the right model and tools for the job, and shows you the plan. You can edit, pause, or stop at any step.
- 03
Protinus executes. You confirm the last step.
Files move. Forms fill. Pages load. For anything irreversible — a purchase, a sent message, a deletion — Protinus hands the final click back to you.
Your data stays on your machine. Protinus only sends what each task needs, only to the model that task requires.
Tell Protinus what you need.
A sample of what Protinus handles today, grouped by the kind of work it gets asked for most. The list grows weekly.
Protinus reads the dates, finds the seat you actually want, and stops before the card.
“Find a flight under $400 to SFO next Friday.”
Three carriers compared. Stops before checkout.
“Book an aisle on UA 357, 6 PM tomorrow.”
Seat held, traveler details pre-filled. You confirm payment.
“Reserve a table for two Saturday, walking distance.”
Three reservation sites checked, best fit surfaced.
What Protinus sees, and what it doesn't.
Protinus watches the window you're working in — the app's name, the page title, sometimes the visible text. It does not record your screen. It does not stream your activity to the cloud. It does not train on what you do.
When a task needs intelligence, Protinus sends only the relevant snippet to the model best suited for that task. Your files, history, and credentials stay on your machine, encrypted.
You can see exactly what Protinus did, every step, in the activity log. You can pause it. You can stop it. You can uninstall it and nothing of yours leaves with us.
Questions, answered.
Is this just ChatGPT with extra steps?
No. ChatGPT tells you how to do something. Protinus does it. The difference is the click-through: Protinus drives your apps, browser, and files directly. ChatGPT lives in a tab.
Which AI models does Protinus use?
Whichever one is best for the task at hand. Protinus benchmarks models weekly and routes your request to the right one — Claude, GPT, Gemini, or an on-device model — based on what the job needs. You don’t pick. We do.
Does Protinus work offline?
Some tasks, yes. File organization, video compression, system settings, and many app actions run locally with no internet at all. Tasks that require web search or large-model reasoning need a connection.
What happens if Protinus makes a mistake?
Anything irreversible — payments, sent messages, deleted files — requires your final click. For everything else, Protinus logs every step and supports one-click undo where the system allows.
Can I see what Protinus is doing?
Yes. A live activity panel shows the plan, the current step, and every tool Protinus is using. You can pause or stop at any point.
Is Protinus free?
Free during beta. Pricing will be announced before general release. Bring-your-own API key supported for power users.
What platforms?
macOS first. Windows shortly after. No mobile yet — Protinus is designed for the desktop, where work actually happens.
Who is building this?
A small team. We’ll introduce ourselves properly closer to launch. For now, the work speaks first.
Stop telling AI what to do. Get Protinus.
Free during beta. macOS and Windows.
We'll email you when your slot is ready.