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The Codex Changelog · September 11 · 4 min

ExternalMessage, Ultra Reasoning, and HookMetadata Changes

We break down OpenAI Python SDK 0.154.0 for Codex, including ExternalMessage for injecting live context from CI, webhooks, and telemetry into active runs, plus the security implications of tool-level authority. The episode also covers late-attaching turn handles, ultra reasoning effort, tiered service control, HookMetadata breaking changes, selective history loading, and other upgrade notes.

0:00-4:15
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We break down OpenAI Python SDK 0.154.0 for Codex, including ExternalMessage for injecting live context from CI, webhooks, and telemetry into active runs, plus the security implications of tool-level authority. The episode also covers late-attaching turn handles, ultra reasoning effort, tiered service control, HookMetadata breaking changes, selective history loading, and other upgrade notes.

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