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rubric-protocol.com x402 attested-inference
https://rubric-protocol.com/v1/x402/attested-inference
answers 402
Attested LLM inference: gpt-4o-mini chat completion plus a post-quantum signed, Hedera-anchored attestation binding the prompt hash, response hash, exact model version, and timestamp. Evidence of which model said what, when — for agents whose decisions may be questioned later.
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
- 0xaB6731A0BcDf511c2842C768a03448075aB654ca
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 109 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-08-15T14:27:16.963Z (1d ago)
- Category
- ai-inference
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Frubric-protocol.com%2Fv1%2Fx402%2Fattested-inference"