01FROM $750
Evidence Brief
One target, one or two layers of its supply chain, every claim anchored to the page it came from. Three 2025 annual reports have been through it: 29 of 29 facts hit the page they cite.
DELIVERABLES
- report.html, report.pdf, evidence.jsonl
- 15–25 pages, 25–40 anchored claims
- 30-minute scope call, one section written before payment, 5 business days
$750 founding rate · 5 business days · first three briefs
02FREE · NO KEY
Free DOI retraction check
Paste a DOI and read what OpenAlex, Crossref and Retraction Watch each assert, with the tier and the date of every row. A paper with no source row comes back as no source row — never as "not retracted".
WHAT YOU GET
- One HTTP GET, CORS open, 572 assertions over 98,868 papers
- Four verdicts, including an abstention with its reason
- CC0 dataset behind it: 98,868 papers, 144,814 citation edges
Free per lookup · paid judgments $0.02 and $0.10 per call