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k2so.wrong.systems services counterparty-address-check
https://k2so.wrong.systems/api/services/counterparty-address-check
answers 402
Given a Base address, check ETH/USDC balance, transaction activity, and contract status, with a low-risk/review/caution verdict for pre-payment counterparty screening.
We sent a real
GET request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.02
- Network
- base
- Pay to
- 0xc85f0CF16F5e677bBE5dFc94662Cc86F2FbA0604
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- GET
- Response latency
- 701 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-08-15T14:27:56.357Z (2d ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fk2so.wrong.systems%2Fapi%2Fservices%2Fcounterparty-address-check"