offercheck
Check a URL before you cite, visit or trust it: liveness, final URL and redirect chain, soft-404 detection, page title, domain registration age (RDAP), robots.txt policy for AI agents, and Wayback Machine snapshot availability. $0.002 per c
Go to this service →Our latest check (2026-10-11)
- Answering
- Yes — valid x402 payment terms
- Time to answer
- 509 ms
- Price
- $0.002 per call
- Paying buyers, last 30 days
- 3 (directory's own records)
- Paid calls, last 30 days
- 3
- Category
- DNS and domains
- Address
- https://offercheck.offercheck.workers.dev/v1/check/url
Accuracy
Accuracy scores are published once a seller has enough paid checks against an independent record (at least 7 scored answers over at least 7 days). Until then no score is shown, and a missing score is never a pass.
For agents
This page as JSON: /sellers/f4265ba2d38d.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).