OpenAI Blog

Unlocking the Codex harness: how we built the App Server

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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 Blog
Apr 23

What is Codex?

Learn how Codex helps you go beyond chat by automating tasks, connecting tools, and producing real outputs like docs and dashboards.

OpenAI Blog
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Codex just got faster, more reliable, and better at real-time collaboration and tackling tasks independently anywhere you develop—whether via the terminal, IDE, web, or even your phone.

OpenAI Blog
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Codex is now generally available

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