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Unlocking the Codex harness: how we built the App Server

OpenAI publishes a technical overview of the Codex App Server, a bidirectional JSON-RPC API that enables streaming progress, tool use, approvals, and diffs for embedding the Codex agent.

Feb 4 · 14:00:00 · primary fetch1 sourceupdated Feb 4 · 14:00:00

Learn how to embed the Codex agent using the Codex App Server, a bidirectional JSON-RPC API powering streaming progress, tool use, approvals, and diffs.

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openai.comUnlocking the Codex harness: how we built the App Serverprimary14:00:00