Evidence402
Check up to ten DOI citations against source registries, compare optional titles, and expose publication update signals. Use to detect incorrect references.
Go to this service →Our latest check (2026-10-11)
- Answering
- Yes — valid x402 payment terms
- Time to answer
- 87 ms
- Price
- $0.020 per call
- Paying buyers, last 30 days
- 1 (directory's own records)
- Paid calls, last 30 days
- 1
- Category
- Forecasts, signals and predictions
- Address
- https://evidence402.onrender.com/api/v1/verify
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/cc694ce2d2fc.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).