
IAB Tech Lab’s Supply Chain API and API+ Subscription Service provides a comprehensive solution for improving transparency, efficiency, and safety across the digital advertising supply chain. The service is designed to address key challenges such as fraud prevention and transparency, and includes two primary API packages: Supply Chain API and Supply Chain API+. These APIs got beyond the free tools provided by the IAB Tech Lab Tools Portal (free login required) to provide data on demand and giving companies the ability to:
- Combat Fraud: Reduce risks by leveraging real-time data to detect anomalies.
- Boost Efficiency: Save time and resources with automated tools tailored for today’s complex advertising environment.
- Ensure Compliance: Stay aligned with industry best practices and evolving standards.
The Supply Chain API and API+ subscription services enable an organization to fully automate and combat the potential for fraud, or to ensure their compliance, with 2 packages – Basic Supply Chain API, and an Enterprise Supply Chain API+.
Basic Supply Chain API package
The Basic Supply Chain API subscription enables automated retrieval of ads.txt, app-ads.txt, and sellers.json data for all companies that IAB Tech Lab crawls. You can use this API to:
- Validate Authorized Sellers: Check for compliance with the latest ads.txt and app-ads.txt standards.
- Enhance Transparency: Quickly identify authorized participants in the supply chain, improving decision-making.
- Streamline Operations: Automate data extraction and validation, reducing manual work.
Supply Chain API+ Enterprise package
The Supply Chain API+ enterprise subscription adds advanced functionality to combat fraud and enhance data insights, with the additional benefits of:
- Data Freshness: Customer onboarding is faster by providing subscribers with daily weekday updates of Ads.txt data. Sellers no longer have to wait a day or two to ensure the accuracy and validity of ads.txt entries. The data is available the next day.
- Easier troubleshooting: As a buyer or seller trying to understand why a path is unauthorized that you believe should be authorized, daily data updates make troubleshooting easier. Users don’t have to worry about the freshness of the ads.txt crawl, they can focus more solely on ensuring that sellers have adhered to the standard.
- Accuracy: Supply Chain API+ comes with another critical feature. Plus, subscribers will now receive a file hash in the API response. This feature allows you to confirm that you’ve downloaded the complete file and there is no missing data, offering an extra layer of assurance
The API+ subscription now includes an invaluable new feature – Supply Chain Validation for Sellers. This powerful new feature flips the traditional supply chain validation model to focus on YOU, the advertising system. Instead of validating from the publisher’s perspective, you’ll now be able to see every instance where your domain is listed in Ads.txt and App-ads.txt files across the ecosystem.
If you have questions on signing up or the functionality, please email techlab@iabtechlab.com
What customers are saying about the Supply Chain API

“Thanks to the Supply Chain API’s comprehensive ads.txt coverage, we empower our account management and demand teams, reduce the burden on technical teams and ensure compliance with buyer and DSP requirements.“
Director of Publisher Solutions, Nexxen
Supply Chain API and API+ Pricing
The Supply Chain API and API+ Subscription Services equip advertisers, publishers, and tech providers with the tools needed to thrive in a rapidly changing digital landscape, setting the standard for supply chain safety and trustworthiness. You can view a summary of the Transparency Center API data sets here or browse actual data in the Tools Portal.
The costs of each subscription are as follows:
Supply Chain API Basic | Supply Chain API+ |
---|---|
Members: $2,500/year Non-Members: $4,500/year (IAB Tech Lab Board Members receive this for free as a Board Member benefit) | Members & Non-Members $2,500/year in addition to Basic Subscription cost |
Data Sets Included: Ads.txt – 3 crawls per week App-ads.txt – 3 crawls per week Sellers.json – 3 crawls per week Supply Chain Validation Web Supply Chain Validation App News Media List – LMC News Media List – IAB Canada Audience Segment Metadata Identifiers MSPA Signatory IDs SKAdNetwork IDs | Data Sets Included: Ads.txt – 5 crawls per week App-ads.txt – 5 crawls per week Sellers.json – 5 crawls per week File Completeness Hash Value (+ only) Supply Chain Validation for Sellers **NEW** plus all features of the Basic subscription |