code-airlock: Isolating Coding Agents in Ephemeral microVMs

Trivo_ · reddit · 2026-07-05

A developer open-sourced code-airlock, a tool that runs AI coding agents inside ephemeral microVMs (Docker Sandboxes). It clones the repository within the sandbox, allowing the agent to install dependencies, build, launch containers, and modify files without accessing the host filesystem or credentials. Users then review the diff and pull the necessary changes. The design uses total environment isolation to replace fragile deny rules, currently supporting Claude Code, Codex, and OpenCode.

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