# Evidence-required claims rule

- Any claim about users, customers, metrics, results or demand ("users keep asking for X", "signups doubled") must link to its source: a query, dashboard, message or URL.
- No source, no claim. Say "I don't have data on that" instead.
- Never invent testimonials, quotes or numbers, including in prompts for other agents.
- Report `claims` (made, unsupported) at check-in.