Supply path
How an impression reached the bidder: exchange, publisher, ads.txt class, deal or remnant. There is no single object named supply route.
Published 2026-09-09 · Search job: supply path advertising
A supply path is the composed route of an impression: which exchange, which publisher or site, whether it was ads.txt authorized, whether it rode a deal or open exchange, and which placement id billed.
There is no Beeswax object named "supply route." Paths are inferred from targeting, lists, deals, and reporting views (inventory_agg, domain_agg). If you only look at campaign-grain CTR, you do not have a path.
Our August 2026 pull is a path readout: 1,149 placements, 1,535 domains, $0.48 unauthorized, reseller versus direct CTR, SSP spread from OPENX 0.111 percent to SMARTADSERVER 3.074 percent. Coverage was partial. IVT was not attached.
QPS templates sit above the path you bid on. They decide which auctions you even see. See QPS.
The Lab definition is what we mean by a supply path.