The inputs are yours, not a generic prompt with a logo.
The about page lists them: product information, market language, competitors, customer questions, editorial rules, and conversion goals. Reddit research is one way customer questions arrive, when the category actually talks there. Call recordings are not required. If you choose to share them, your agreements have to allow it. We will not assume we have them.
Agents can assemble a SERP and a pile of objections. A strategist cuts the brief until the page has one job. A brief that tries to rank for a family of unrelated queries becomes the thin page the homepage warns about.