The most practical, fast, tiny command sandboxing for AI agents (dw1.io)

sandboxec, a new command-line utility, has been introduced as a lightweight sandboxing solution for AI agents running on Linux. Unlike traditional isolation methods that require full environments, sandboxec allows users to enforce an allow list on filesystem and network access for a single command and its child processes using the Linux Landlock security feature. This approach avoids the overhead associated with containers by locking down access without needing a new filesystem or substantial resources, providing a fast, efficient mechanism for executing potentially risky commands within AI workflows. This tool is particularly significant for the AI and ML community as it enables tighter security controls while fostering agility in development and testing environments. By minimizing the attack surface—only allowing specified read, write, and execute permissions—sandboxec ensures that even untrusted commands can be run with reduced risk. It is ideal for scenarios such as executing third-party CLIs, testing installation scripts, and running generated code in continuous integration pipelines. With Landlock's self-restricting capabilities, developers can tailor the environmental constraints narrowly to fit their needs, opening up possibilities for safer and more robust AI experimentation.