OpenAI just shipped a docs agent directly into developers.openai.com -- and it does more than answer questions. Describe what you're trying to build, and the agent generates a tailored guide complete with a starter prompt and curated documentation links. You can then open that guide in Codex or copy it as Markdown to drop into any other coding agent.

Two modes, one agent

The feature has two distinct behaviors worth understanding separately:

• Q&A mode: Ask anything about OpenAI products -- the Responses API, Realtime API, Codex, fine-tuning, whatever -- and the agent surfaces the relevant answer and links you directly to the matching documentation page.
• Guide generation mode: Describe your project at a higher level (e.g., "I'm building a voice agent with tool calling and streaming") and the agent produces a custom onboarding guide: a tailored system prompt, relevant API references, and a curated reading list for your specific use case.

The generated guide can be opened directly in Codex, OpenAI's coding agent, or exported as Markdown so you can paste it into Claude Code, Cursor, or any other agent that accepts a context file.

The problem it actually solves

OpenAI's developer surface has grown significantly. Agent building blocks like the Responses API, Agents SDK, and AgentKit made multi-step workflows easier to ship , but that also means there are now dozens of overlapping guides, API references, and changelogs to navigate. The docs agent collapses that search cost -- instead of hunting through sidebar links, you describe your goal and get pointed at exactly what matters.