
IAB Tech Lab’s Supply Chain 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 Plus API. These APIs give 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 IAB Tech Lab Tools Portal (free login required) provides some basic free tools for these purposes. After you are logged into the portal you will be able to view data about a specific company, such as their compliance certificates, and business identifiers, but this is not enough to fully combat the potential for fraud, or to ensure your own company’s compliance.
Introducing the Supply Chain API
The Supply Chain API subscription service enables an organization to receive significantly more data on-demand, with either a Basic or a Plus subscription. The Basic 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.
The Plus 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 Plus 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
If you have questions, please email techlab@iabtechlab.com
What customers are saying about the 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 Pricing
The Supply Chain API Subscription Service equips 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 the Transparency Center API data sets and the schedule here.
The costs of each subscription are as follows:
Supply Chain API Basic | Supply Chain API Plus |
---|---|
Members: $2,500/month (IAB Tech Lab Board Members receive this for free as a Board Member benefit) Non-Members: $4,500/month | Members & Non-Members $2,500/month 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 Web Supply Chain Validation App News Media List – LMC News Media List – IAB Canada Audience Segment Metadata Identifiers MSPA Signatory IDs SKAdNetwork IDs |