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ChatGPT plugin extensions add sidebar apps and file viewers; Free and Go web support is still coming
OpenAI's DevDay plugin extensions give developers new places to put an MCP-backed app inside ChatGPT. The developer docs distinguish fullscreen sidebar apps, conversation panels and file viewers, while narrowing the rollout for Free and Go users on the web.
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OpenAI adds computer use to Agents API; developers still control website access
The Agents API entered public beta on September 10. OpenAI's DevDay update adds computer use, letting developers run browser tasks in a hosted environment while their application handles website access, sign-in and result verification.
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Codex Security Cloud includes Daybreak Blue at DevDay; what still needs approval and review
OpenAI's DevDay update presents Codex Security Cloud on desktop and web with Daybreak Blue models available inside Cloud, without a separate application. The scanner and its plan categories predate DevDay; repository setup, paid-scan opt-in and human review still matter.