Launched this week
Offstage Cloud
On-demand macOS sandboxes for AI agents
42 followers
On-demand macOS sandboxes for AI agents
42 followers
Offstage gives AI agents and CI an on-demand macOS sandbox. Build iOS and Mac apps with Xcode, launch them in the Simulator, or hand an agent a real desktop. Pay per second with no 24-hour minimum. A 10-minute run costs about $0.18.
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Hello hello PH! I'm Viraat, the founder of Offstage!
Coding agents are good at computer use, building, and writing code, but anything for Apple platforms needs a Mac. While there are bajillions of sandbox solutions for Linux services, there isn't a good on-demand solution for macOS sandboxes... until now.
Offstage gives your agent a macOS sandbox in one API call, and you pay only for the seconds you use. A 10-minute run costs about $0.18. The same 10 minutes is $0.62 on GitHub Actions and $29.52 on AWS, because AWS charges for a full day.
What you can do:
Build iOS and macOS apps with Xcode from any agent
Hand an agent a real macOS desktop and a goal
Run GitHub Actions for CI on a Mac by changing one line
Whatever else you need a Mac for!
New accounts get $5 in free credit, no card needed.
I'd love to know what you'd run on it, and what's missing.
per second billing sounds great until the first few minutes of every run is just the mac booting. how fast is a cold start
@igorblink Our cold starts are fast. 25th to 75th percentile is 154 ms - 341 ms!
This is the missing piece for me — I build iOS and Mac apps, and my agents hit a wall whenever something needs Xcode or the Simulator, since every other sandbox is Linux. Per-second billing with no day minimum is what makes a quick build + Simulator check actually worth it. What I'd run first is a clean Xcode build of my app after an agent makes changes, then launch it in the Simulator. Does each sandbox start fresh, or can an agent keep its setup warm between runs?
@jcbuilds We right now don't support snapshots of sandbox but that is on the roadmap! Would love for you to try it and let us know what other features would make sense.
Billing by the second with no daily minimum is what makes this usable for a quick simulator check, because renting a Mac for a full day to watch one build was never worth it.
@karimbenkeroum 100%!