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openai-agents-js 0.18.0 moves Docker file APIs inside the container, which breaks host-side file access
OpenAI Agents SDK for JS v0.18.0 (2026-09-10) now runs Docker sandbox file APIs entirely inside the running container. Images need /bin/sh and GNU utilities including `realpath`, editor updates are capped at 10 MiB, and newly added path grants require a resume or recreate. `UnixLocalSandboxClient` gains `fileIOProtection: 'auto' | 'required' | 'off'`, but the notes say it does not confine host shell commands. `imageGenerationTool()` gains an `action: 'generate' | 'edit' | 'auto'` option.
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