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source-claim-proof.mattskowronis.workers.dev v1 verify
https://source-claim-proof.mattskowronis.workers.dev/v1/verify
answers 402
Verify whether a supplied public source page currently supports one atomic factual claim. Returns supported, contradicted, or insufficient-evidence plus source snippets, or explicit blocked/unreachable/unsupported states. Not a general fact checker or web search.
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.01
- Network
- base
- Pay to
- 0x22B3D4485C8Dcd8FC4840a7570664747c9055530
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 230 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-09-06T01:12:36.084Z (31d ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fsource-claim-proof.mattskowronis.workers.dev%2Fv1%2Fverify"