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SmolVM lets you run coding agents like Claude and Codex inside an isolated sandbox. The agent gets a full development environment — git credentials, dev tools, terminal access — but nothing it does can affect your host machine. No more pressing “accept changes” every few seconds. Let the agent work freely in its own computer.

Start a coding agent

smolvm claude start
Both commands launch a sandbox with the respective coding agent pre-installed and configured.

What you get

Each coding agent sandbox comes with:
  • Isolated environment — the agent runs in its own VM, separate from your host
  • Git credentials — pre-configured so the agent can clone, commit, and push
  • Dev tools — common development tooling ready to use
  • Terminal access — full shell access for multi-step workflows
Combine with host mounts to give the coding agent read-only access to your existing project while keeping your files safe.
Last modified on April 28, 2026