Ad API Guide: the field manual for advertising-library data

Field notes

The project uses a fixed advertiser cohort to make route comparisons more concrete than ad-count rankings. Its visible run records 100 calls and 100 valid responses at a total cost of $1.58, while the field guide expands the comparison to 1,600 ads across ten routes. The methodology distinguishes fields that can be observed—such as creatives, dates, placements, status, and landing pages—from spend, targeting, and performance data that the site says may be unavailable.