Directory/Categories/Advertising & Marketing/AppSupplyIndexBot

AppSupplyIndexBot

GoodBotVerifiedBOT

A specialized crawler that fetches IAB Tech Lab standard files like app-ads.txt and sellers.json to verify digital advertising supply chains. Operated by App Supply Index.

Operator website ↗

GoodBot

Assessment

Advertising & Marketing

What is AppSupplyIndexBot?

AppSupplyIndexBot is a focused crawler operated by the App Supply Index to maintain transparency in the digital advertising ecosystem. It exclusively targets specific industry-standard files, namely 'app-ads.txt' and 'sellers.json', to ensure that publishers and ad-tech vendors are correctly identified and authorized. The bot is designed to be lightweight and non-intrusive, operating on a weekly schedule and strictly adhering to robots.txt directives.

Helpful — This bot performs essential industry verification for ad-tech transparency and respects robots.txt and crawl-delay protocols.

Identification

Bot name

AppSupplyIndexBot

Operator

App Supply Index

How we rated this bot

Verified by Cloudflare, which confirms who runs it, with no widespread reports of abuse.

Names itself honestly

Yes

Verified by Cloudflare

Yes

Says it follows robots.txt and opt-outs

Not stated

Ignores site rules

None found

Disguises itself or evades blocks

None found

Overloads sites

None found

How widely people complain

No complaint about this bot in the evidence

Reddit discussion

There is no Reddit discussion of this bot in the evidence

What we read

Why it crawls your site

The bot crawls to provide an automated, public index of advertising supply chain data, helping buyers verify the legitimacy of ad inventory. By reading these files, it helps identify potential fraud and ensures that advertising budgets are spent on authorized sellers. Operators can verify the bot's authenticity through its implementation of Web Bot Auth (RFC 9421), which provides cryptographically signed headers to confirm the request originates from the official App Supply Index infrastructure.

Block or allow AppSupplyIndexBot

Block it

Add a Disallow rule for AppSupplyIndexBot in your robots.txt file. You can also block at the server level using your web server configuration or CDN firewall rules to filter requests matching the user-agent string.

# Block AppSupplyIndexBot from crawling your entire site
User-agent: AppSupplyIndexBot
Disallow: /

# Allow AppSupplyIndexBot full access
User-agent: AppSupplyIndexBot
Allow: /