Get cited by ChatGPT by allowing OAI-SearchBot and ChatGPT-User in robots.txt, ranking on Bing (ChatGPT Search's primary index), pushing new URLs via IndexNow, and shipping pages with a direct-answer first sentence plus QAPage or FAQPage JSON-LD.
OpenAI's bots documentation distinguishes three user agents. GPTBot is training-only. OAI-SearchBot indexes for ChatGPT Search. ChatGPT-User is a live user-triggered fetch. To be citable in ChatGPT's search results, allow the latter two.
ChatGPT Search's live web results are anchored on Bing's index — a fact stated in Microsoft's IndexNow announcement and reinforced by the OpenAI-Microsoft partnership. Fast Bing discovery is achieved via IndexNow: publish a key file, ping on every URL change.
Editorial: put the answer as the literal first sentence under each H2. ChatGPT's answer synthesis lifts stand-alone sentences more cleanly than bullet fragments. Mark the answer with QAPage or FAQPage JSON-LD and reference an author Person node with sameAs links.
There is no ChatGPT-side webmaster tool. Measure by asking ChatGPT the target questions and inspecting the source cards.