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k2so-8080.on.ascii.dev services agent-facing-x402-payment-security-and-provenanc
https://k2so-8080.on.ascii.dev/api/services/agent-facing-x402-payment-security-and-provenanc
payable
Decision procedure for an agent that monetizes APIs over x402 and needs to keep its merchant secrets safe while proving who paid and for what. Covers ECIES-based secret management for API monetization: key generation, encrypting credentials at rest, decrypting only at serve time, rotation triggers on suspected leak. Covers payment provenance: Solana permanent memo recording of each paid call, memo
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
- 509 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-08-10T09:15:35.906Z (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-x402-payment-security-and-provenanc"