fastco.work puts an AI to work on a real computer — ours or your own — while you watch and approve. Here's how to get your first job done, and how to run it from WhatsApp or LINE afterwards.
Go to fastco.work/app and Continue with Google. No card needed — the free tier gives you a real desktop, 4 hours of Windows a day, plus unlimited Linux.
Pick Windows (full desktop, for apps with no API), Linux (free, fast, for web tasks & automation), or Android (a real phone with the Play Store). A live desktop opens in your browser in seconds. No machine of your own needed — but if you'd rather it run on your own PC or phone, choose BYO so nothing leaves your device.
In the chat, describe the job in plain words — for example
“pull last month's invoices from the portal into one sheet” or
“post this product to my 5 marketplaces”. The AI starts working the machine: browsing,
clicking, filling forms, running code.
You see every click in the live desktop. Before anything irreversible — Submit, Pay, Send — it pauses and waits for your one-tap OK. Jump in and take over any time; hand it back when you want.
When it's done you get the deliverable. Compute bills by the second and stops the moment you do; your files and setup persist — pick the next job up tomorrow exactly where you left off.
Command your machine from the chat app you already use. Link once
(WhatsApp → Linked Devices → Link with phone number, or add our LINE Official Account), then just message a
task. Reply start to open a machine, status to see what's running,
stop when done — or type a task in plain words and it goes to your active machine.
Once your number is linked, your cowork is a chat contact — no browser needed. Message it like a colleague:
Message us on WhatsApp or add the LINE official account and say hello — we link your number to your fastco account and confirm in the same chat. One number, one account.
start (or start small / medium / large) opens your machine and replies with a secure link to watch it live · stop suspends it and replies with the seconds you were billed · status shows what's running · help lists everything.
Type what you want done in plain words — the agent takes it as a job on your machine and messages you progress as it works. When it needs a one-tap approval, it asks you right there in the chat.
Prefer your agent to work on a computer or phone you own — with your logged-in apps and accounts? Attach it. In the app, open BYO-VM and pick the kind of machine:
Copy the one-line enrolment command and run it on your machine. It installs a per-user agent (it refuses to run as root), polls for your jobs, and runs them as your own account. Re-run the same line to upgrade.
A PowerShell installer plus a signed agent. It checks its own SHA-256 before running, registers a logon task under your account, and confirms it started. Runs your commands and scripts on your PC.
Open Your own Android phone → Set up. You get a pairing code. Install the fastco phone-link app, open it, type the code — and your cowork can drive that phone directly: its own apps, its own logged-in accounts. Detach anytime from the same panel.
Building with a computer-use agent — Claude's computer use, a CopilotKit app, your own loop? Every one of them needs a computer to act on: a display, a desktop, the apps, the logged-in sessions. That environment is exactly what fastco is. Bring your harness; rent our hands.
Point your agent's executor at a fastco desktop. We speak Anthropic's
computer use vocabulary verbatim — screenshot,
left_click, type, key, scroll and the rest —
plus the browser tools (navigate, read_page with
stable element references, find, click). One machine, your loop, no new
dialect to learn.
Claude Desktop, Cursor, Claude Code and any MCP client can add fastco as a tool server:
provision, run a task, computer, browser,
screenshot, stop. Your harness decides how the agent thinks and
which model it uses; fastco is where it acts.
Every action a fastco machine takes streams as standard AG-UI events, so a CopilotKit interface renders the agent's activity live — the same tool names your executor drives. Observe and act, one vocabulary, end to end.
No. The machine runs in the cloud and opens in your browser. Bringing your own PC/phone (BYO) is an option, not a requirement.
No lock-in — a free model on the free tier, Claude on paid tiers, or bring your own key. You're never tied to one vendor.
On BYO it works your own logged-in apps and nothing leaves your machine. On our cloud, each customer is isolated. Either way it pauses for your approval before anything irreversible.
Anything you'd do on a computer with apps that have no API — data entry, portal submissions, listings, invoicing, research, booking, spreadsheets — on Windows, Linux, or a real Android phone.