In memoriam

Actrok

“Grant GPT a hand.”

Active
December 2023 – February 2024
Closed
Lived at
actrok.derekxwang.com
The Actrok landing page
The landing page at actrok.derekxwang.com, captured on its last day.

What it was

Actrok let ChatGPT work on your own computer. I liked what Open Interpreter could do, but I was already paying for ChatGPT Plus and didn’t want to pay again for API usage. So I built a bridge: requests from a GPT went through Actrok to an app on your Mac, and the results came back to the chat.

I launched it on February 3, 2024 as a free Open Interpreter for ChatGPT Plus users, with the macOS download handed out through Discord.

What I built

  • Accounts with Google or GitHub sign-in, on Remix (upgraded to v2 a week before launch) and Tailwind.
  • The web half of the desktop sign-in: the app opened a login attempt, you finished it in the browser, and the app polled until it was in.
  • API keys and device linking, with 50 free requests per device, tracked in DynamoDB behind tRPC and an OpenAPI handler on Lambda.
  • Actnel, the proxy underneath: wildcard subdomains of actnel.derekxwang.com pointed at a service on Fly.io, and every device, quota and licence in the backend belonged to it.
  • Usage plans (trial, hobbyist, professional) in the data model. The code that would have switched them on stayed commented out.

How it ended

The site’s last commit landed a week before launch, in January 2024, and nothing here moved after that. I closed Actrok on 2026-10-07, together with the rest of the old SST v2 app.

Read more