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attester.dev judge
https://attester.dev/judge
answers 402
QA Judge: grade an agent output against your rubric (structure, citations, claim support, length constraints) and receive a 0-100 score with a signed attestation. $0.10 USDC per grading.
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.10
- Network
- base
- Pay to
- 0x57407D691F755cAa107647718F3582a8A87467dD
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 2711 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-09-06T01:13:00.814Z (35d ago)
- Category
- other
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fattester.dev%2Fjudge"