Give your coding agent a Mac.

Claude Code and Codex can't build iOS on Linux. macbox runs the build, the simulator, and the tests on a real Mac and hands the result back. $0.05 per Mac minute.

Get $10 in credits when we launch. No spam.

Then tell your agent: Set up macbox by following api.macbox.build/guide

claude — ~/shop-ios · linuxMac time 0:52
> the checkout button is cut off on iPhone SE. fix it and run the tests● Found it. CheckoutView.swift pins the button below the safe area on small screens.● Update(CheckoutView.swift)  ⎿  Added 3 lines, removed 1 line● Bash(macbox test --device "iPhone SE")  ⎿  ✓macbox  sending this folder to your Mac     ✓macbox  synced 12 changed files1.6s     ✓macbox  incremental build38s     ✓macbox  booted iPhone SE simulator9s     PASS ShopTests.CheckoutTests testButtonFitsOnSmallScreens     test succeeded  128 tests passed● Bash(macbox screenshot checkout.png --device "iPhone SE")  ⎿  ✓macbox  screenshot saved  checkout.png● Tests pass. The button now sits inside the safe area on iPhone SE. Screenshot: checkout.png>

What your agent can do

Everything it needs Xcode for, on a real Mac in the cloud. Your laptop can sleep.

Build and test

Your agent runs macbox build and macbox test. Only changed files go to the Mac, and the build cache stays there, so the second build is fast.

Run and tap through

macbox run launches the app on a simulator with a live link you can watch and use. Your agent taps, types, and swipes through it to check its work.

Debug like in Xcode

Breakpoints, stack traces, and variables through LLDB, from the same tools your agent already uses.

From anywhere

Your own Mac, a Linux box, or a cloud agent like Claude Code on the web, Codex, or Cursor. Nothing to install but one CLI.

Pricing

$0.05 per Mac minute

  • You pay only while a build, tests, or a live session runs.
  • Whole minutes only. A job under a minute is free.
  • Uploading, waiting in line, and starting the Mac are free.
  • Prepaid credit. No subscription, no minimums.

Start with $10 of credit, about 200 Mac minutes.

Questions

Which agents does it work with?
Any agent that can run shell commands: Claude Code, Codex, Cursor, on your own Mac, a Linux box, or in the cloud. To set it up, tell your agent: "Set up macbox by following api.macbox.build/guide".
What works today?
Native iOS apps: Xcode projects, workspaces, Swift packages, CocoaPods, and XcodeGen, on the iOS simulator with the latest Xcode. Not yet: React Native, Flutter, signing, or TestFlight.
How fast is a build?
The first build takes about as long as on a Mac mini. After that only changed files are sent and the build cache is already there, so later builds are much faster.
Is my code isolated?
Each user gets their own macOS VM. It can reach the internet but not other VMs or our network. Your code and build cache stay in it between runs. After 14 days unused it is deleted, or right away with macbox purge.

Get early access

$10 in credits when we launch.

Get $10 in credits when we launch. No spam.