Code in a box

Your own Linux machine for coding agents. Bring your Claude Code or Codex key. Open it from any browser. It stops when you're idle and costs about $0.39 an hour while it runs.

Agents use fewer tokens here: terminal output is compacted before it reaches the model (RTK), typically 60–90% less on builds, tests and git.

Start a box · How it works

What you get

• 4 vCPU, 16 GB, 100 GB disk that keeps your repos and work
• Up to 3 agents at once, each in its own worktree
• Watch live output and the diff; open the PR when it's right
• A one-time link opens the same chat on your phone

Pricing

• While it runs: $0.39 an hour.
• Disk: 100 GB at $10 a month, kept while the box is stopped.
• Billed from your prepaid credit. Model usage is billed by Anthropic or OpenAI on your own key.