How to Safely Run AI Coding Agents: A Practical Sandboxing Guide [2026]

An AI coding agent with filesystem access is a vulnerability waiting to happen. Last week, it was Grok CLI uploading an entire home directory to Google Cloud Storage. Next week, it could be your API keys, your SSH keys, or your client&rsquo;s database credentials ending up somewhere they should not be. The problem is structural: AI coding agents need broad system access to be useful. They install…