Four ad library APIs matter in 2026 — Meta's, TikTok's, Google's political dataset and OpenAdLibrary's. How they compare on access friction, coverage, fields and cost.
The Meta Ad Library is free, official — and silent on performance, spend, history, targeting and the entire open web. The seven limitations that matter, and the workaround for each.
Article 39 of the DSA forces Meta, Google and TikTok to publish every EU ad with targeting and reach data. Here is how to use those repositories — and why the entire native advertising channel sits outside them.
Taboola has no official ad library, but any brand's Taboola ads are still findable. The exact lookup workflow, the five signals in a brand's footprint, and what to do when a search comes up empty.
No RevContent ad library exists — official or otherwise — until now. Inside the 14,735-creative RevContent index: the health-offer marketplace, the advertorial economy measured, and the angles that keep paying.
Baidu's MediaGo DSP publishes no ad library — official or otherwise. Inside the 6,551-creative MediaGo index: the most balanced vertical mix in mid-tier native, the MSN overlap, and the angles the algorithm let live.
No MGID ad library exists — official or otherwise — until now. Inside the 54,585-creative MGID index: the entertainment-arbitrage economy, the direct-response layer, and the most international footprint in native.
Outbrain — owned by Teads since 2025 — publishes no ad library. We maintain the independent one: 92,290 live Outbrain creatives with advertisers, longevity and landing pages, and the workflow to use them.
No official Taboola ad library exists anywhere. Here is the independent one: 171,050 live Taboola creatives with advertisers, longevity, geo and landing pages, and how to use it for real competitive research.
Ad transparency tools let anyone see who is running which ads and where, and here is how the category works, why native ads were the blind spot, and what separates an open ad library from a $300-a-month spy tool.
Meta and Google run public ad libraries; Taboola, Outbrain and MGID never did, so here is what an open native ad library has to capture, and why that gap sat empty for a decade.
Ad transparency is the practice of making the ads an advertiser runs, and who is behind them, publicly visible through searchable libraries and disclosures.
The Google Ads Transparency Center is Google's free public tool for viewing ads any verified advertiser has run across Search, Display, YouTube, and Gmail.
The Meta Ad Library is Facebook and Instagram's free public database of currently running ads, searchable by advertiser, keyword, and country.
An ad library is a searchable, public database of ads that have run on a platform or network, showing the creative, advertiser, and run details.
