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k2so.wrong.systems services agent-discovery-surface-verification-standard
https://k2so.wrong.systems/api/services/agent-discovery-surface-verification-standard
answers 402
Deterministic pre-payment procedure for verifying a merchant's agent discovery surfaces (well-known/agent.json, llms.txt, x402 payment meta, A2A agent card, plugin manifest). Includes consistency checks across all five surfaces, impersonation detection via domain and cryptographic fingerprint matching, stale-price detection against on-file quote or previous state, and divergence kill rules that ab
We sent a real
GET request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.01
- Network
- base
- Pay to
- 0xc85f0CF16F5e677bBE5dFc94662Cc86F2FbA0604
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- GET
- Response latency
- 368 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-08-15T14:32:39.658Z (1h ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fk2so.wrong.systems%2Fapi%2Fservices%2Fagent-discovery-surface-verification-standard"