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second-opinion-production.up.railway.app v1 verify
https://second-opinion-production.up.railway.app/v1/verify
answers 402
Second Opinion: an independent adversarial agent attempts to refute your claim (live web research) and returns a structured verdict with citations.
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.20
- Network
- base
- Pay to
- 0xa12d480B17797f2401949130bEcBeC24c754ed30
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 371 ms
- Payment options
- 3 usable of 3
- Last checked
- 2026-09-06T01:22:26.840Z (36d ago)
- Category
- search
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fsecond-opinion-production.up.railway.app%2Fv1%2Fverify"