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Codex, the SDKs, and the engine behind ChatGPT

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The Wire · Showcase

CODEX SHIPS CROSS-PLATFORM FILE EDITING AND AUTO-REVIEW SMARTS

By RepoJournal · Filed · About OpenAI

Codex can now edit files across different operating systems and automatically escalates sandbox blocks before they fail in production.

The biggest win today is PathUri support [1], which lets the model edit files hosted on different OSes than where app-server runs. This unlocks a core scenario: remote development where client and server live on different platforms. Paired with that, Codex now handles cross-platform relative paths intelligently, converting only when the inferred path convention matches the host OS. On the safety side, auto-review just got sharper [2]. The on-request approval policy is now tuned separately for auto-reviewed runs, escalating likely sandbox blocks earlier so commands needing remote services or auth don't hang or fail inside the sandbox first. Infrastructure-wise, Codex added turn-scoped context contributions [3], splitting context injection into thread-scoped and turn-scoped methods so extensions can pull from turn-local state. The team also cleaned house, removing the disabled child_agents_md experiment [5] to cut prompt and config surface, and wired in external time source support [4] for sessions that need thread-specific clock handling.

Action items

References

  1. [1] apply-patch: carry paths as PathUri ↗ openai/codex
  2. [2] Make auto-review on-request prompt more proactive ↗ openai/codex
  3. [3] Add turn-scoped context contributions (#28911) openai/codex
  4. [4] Add app-server current-time impl (3/n) ↗ openai/codex
  5. [5] [codex] Remove child AGENTS.md prompt experiment (#28993) openai/codex

FAQ

What changed in OpenAI on June 19, 2026?
Codex can now edit files across different operating systems and automatically escalates sandbox blocks before they fail in production.
What should OpenAI teams do about it?
Review auto-review prompt changes in on_request_auto_review.md before next sandbox deployment • Test cross-platform file editing scenarios if you run mixed OS environments • Audit extension code using turn-scoped context contributions for correctness
Which OpenAI repositories shipped on June 19, 2026?
openai/codex

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