How do you sandbox your AI coding agent? Reddit thread compares isolation setups
Chooseyourmindset · reddit · 2026-10-30
A developer asks Reddit to compare AI coding agent sandboxing setups. He currently runs Claude Code in VS Code inside a Docker container to keep a bad command or prompt injection away from his main machine. The discussion covers:
- Harnesses: Claude Code, Codex CLI, Cursor, Aider, Cline, Gemini CLI — differences in code quality, speed, cost, rate limits and context handling
- Isolation: Docker, devcontainers, VMs, WSL2, dedicated users or machines; file access via read-only mounts or copying only project folders
- Secrets & network: keeping API keys from leaking, firewall/allowlist/proxy restrictions
- Automation trade-offs: full auto-approve (--dangerously-skip-permissions) inside the sandbox vs. reviewing each action
- Browser & MCP: giving agents browser access via Playwright MCP or Puppeteer, and which MCP servers people actually use daily
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