SiteCheck
A DOI's bibliographic record from Crossref (title, authors, journal, publisher, date, type, citation count, license), or the best matches for a citation-style search (max 10). An unknown DOI answers 404, not charged.
Go to this service →Our latest check (2026-10-14)
- Answering
- Yes — valid x402 payment terms
- Time to answer
- 74 ms
- Price
- $0.001 per call
- Paying buyers, last 30 days
- 1 (directory's own records)
- Paid calls, last 30 days
- 1
- Category
- Unclassified
- Address
- https://api.sitecheck-api.workers.dev/api/doi
Accuracy: paid answers checked against an independent record
Not yet in our paid checks. A seller we have not checked has neither passed nor failed.
For agents
This page as JSON: /sellers/ca296093cb05.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).