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OpenAI expands Codex and its API at DevDay with security scans, a Decisions API, and Ultrafast.

The DecoderIndependent reporting·
AI brief

At DevDay 2026, OpenAI added reusable cloud environments, automatic security scans for GitHub repositories and a code review view to Codex, and updated its Agents API to support Computer Use while introducing a Decisions API for fast, single decisions.

Written by AI from The Decoder's published text.

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“At DevDay 2026, OpenAI gave Codex reusable cloud environments, automatic security scans for GitHub repositories, and a code review view in the desktop app. The Agents API now supports Computer Use, and a new Decisions API handles fast, single decisions.”
The Decoder, 29 Sept 2026, 17:14.

Reporting from a publisher outside the organisation being covered.

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