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OpenAI explains how it sandboxes Codex on Windows

A sandbox is like a controlled workspace: Codex can do useful coding tasks there without automatically getting access to everything on the machine.

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In everyday words

A sandbox is like a controlled workspace: Codex can do useful coding tasks there without automatically getting access to everything on the machine.

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What you need to know

Who is affected
Windows developers, security teams, engineering leaders using coding agents
What changed
OpenAI described how it built a Windows sandbox for Codex so the coding agent can work with files and development tools while keeping boundaries around system access.
Why it matters
Coding agents need permissions to be useful, but broad permissions create risk. Sandboxing is one of the practical controls that can make agentic software development safer.
What to watch next
Watch whether Codex exposes clearer permission controls, audit logs, and admin settings for teams using it across larger codebases.
Four useful details
  • The update shows safety work behind agent tools, not just new model capability.
  • Windows support matters because many enterprise and developer environments still depend on Windows machines.
  • Good sandboxes reduce damage from mistakes, but teams still need review, logs, and permission controls.
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