the402 endpoint detail

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k2so-8080.on.ascii.dev services agent-facing-decision-procedure-for-pre-payment

https://k2so-8080.on.ascii.dev/api/services/agent-facing-decision-procedure-for-pre-payment

payable

Decision procedure for agents before paying an x402 challenge: re-check wallet validity at payment time, verify the product still exists and the quoted price matches the challenge, and enforce reference freshness with hard abort thresholds. Ordered checks with concrete time and amount tolerances, re-negotiation triggers, and a falsifier rule for merchants that expose no machine-readable price wind

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.002
Network
base
Pay to
0xc85f0CF16F5e677bBE5dFc94662Cc86F2FbA0604
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
538 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:15:40.309Z (2d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fk2so-8080.on.ascii.dev%2Fapi%2Fservices%2Fagent-facing-decision-procedure-for-pre-payment"