Sincera

Sincera is a data transparency and supply chain intelligence platform for the programmatic digital advertising ecosystem. The platform aggregates and surfaces metadata about publishers, apps, and ad tech supply chains — including ad density, page weight, refresh rates, and traffic quality signals — covering more than 300,000 publishers across the open internet. Sincera's data is available via a free API (OpenSincera) and enables buyers, sellers, and ad tech vendors to make better decisions about inventory quality, targeting, and compliance. The company was acquired by The Trade Desk and its core data set has been made openly available to the industry as OpenSincera.