Codex Moves to the Cloud: Reusable Environments, Codex Security Cloud, and the Agents API with Computer Use (DevDay 2026)
OpenAI DevDay packages coding-agent harness as reusable cloud envs, Security Cloud scans, a Decisions API for next-action routing, and Agents API Computer Use—harness, sandbox, and decision control in one ship. Oct 13: Codex code review GA on GitHub. Official OpenAI DevDay 2026 talk, Harness-as-a-Service: Building with the Agents API, on using the Codex harness through the Agents API while OpenAI manages orchestration and the app supplies the environment. The page description mentions running agents in your own environment, keeping long-running tasks going, and seeing which infrastructure OpenAI manages. The watch page showed about 8 views / 14 minutes (official early upload). Talk contents were not independently verified. Adds an official session video to this DevDay / Agents API row; preserve published updated_at. Official OpenAI DevDay 2026 talk, Codex Security: From Vulnerability to Verified Fix. Public recaps describe Codex Security / Defense Factory as contextualize, scan, enrich, patch and integrate, including replaying an attack path to confirm a fix, with a human deciding when to proceed. Related public pages include the DevDay recap and github.com/openai/codex-security. Search listings showed about 3 views; a watch-page fetch returned LOGIN_REQUIRED, so view counts and timestamps are unverified. Talk contents and demo results were not independently verified. Adds an official session video to this Security Cloud / Codex Security row; preserve published updated_at.