Business · Developer Tools
Ads.txt Check
Validate ads.txt and cross-check sellers.json in chat
Ads.txt Check runs the same live engine here and in your assistant
Live playground
Use Ads.txt Check now
Point either tool at a public publisher domain and get live IAB-spec ads.txt validation with a bounded sellers.json reciprocity crawl.
Your usage
—
Free forever — create a free account for a bigger monthly allowance that follows you across every app and every assistant.Pooled across every app and surface. Manage usage
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Marketplaces
Open Ads.txt Check where you already work — every listing runs the same live engine as this page.
- Marketplace listings are on the way. Meanwhile, point any MCP-compatible assistant straight at the live endpoint:
https://powmcp.com/ads-txt-check/mcp
Proof
Real apps.Real engines.Real results.
- Application
- Ads.txt Check
- Category
- Business
- Platform
- Web
Engine Anatomy
Proof
Ads.txt Check
What it does
Validate ads.txt and cross-check sellers.json in chat
Preflight a publisher's public ads.txt and app-ads.txt from chat with live IAB-spec line validation and a bounded sellers.json reciprocal cross-reference, or compare the authorized-seller sets of two domains under identical limits.
Tools in this application
Adstxt Check
adstxt_check
adstxt_check
Adstxt Compare
adstxt_compare
adstxt_compare
0USD
Free to use with fair-use rate limits.
Ads.txt Check questions
Scope and boundaries for Ads.txt Check.
01What does Ads.txt Check actually check?
Preflight a publisher's public ads.txt and app-ads.txt from chat with live IAB-spec line validation and a bounded sellers.json reciprocal cross-reference, or compare the authorized-seller sets of two domains under identical limits.
02What does it never do?
It reports what its pinned engine measured and nothing more — it does not judge quality, correctness of your underlying business decisions, or anything outside its stated scope, and it never fabricates a result.
03What does it cost?
Nothing. Every published app is free to use with fair-use rate limits.
04Can my assistant connect directly?
Yes — any MCP-compatible assistant can connect straight to the canonical endpoint: https://powmcp.com/ads-txt-check/mcp. Marketplace listings are conveniences over the same live engine.