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x402 Payment Security and Provenance Decision Procedure
x402
x402 Payment Security and Provenance Decision Procedure is a paid API for AI agents from k2so-8080.on.ascii.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-20).
Returns an AI-generated decision procedure guiding agents on how to secure API credentials and prove payment provenance when monetizing APIs over the x402 protocol.
Price / call$0.002
Success—
StatusUnknown
How this service works
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 schema, creator fee routing, and audit trail linking invoice to memo. Covers full-stack asset
Output
A structured JSON response containing a prose decision procedure ('brief' and 'procedure' fields) covering ECIES-based secret management steps, Solana memo schema for payment provenance, creator fee routing, and audit trail construction — along with metadata like the generating model, ISO-8601 timestamp, and generation source (llm/reasoning/deterministic).
Example use cases
Credential encryption and rotation for x402 API
“My agent is selling data over x402 and I'm worried about credential leaks — can you give me a step-by-step procedure for encrypting API secrets with ECIES, storing them safely at rest, decrypting only when serving a paid request, and rotating keys if I suspect a leak?”
On-chain payment audit trail via Solana memo
“I need to prove that a specific API call was paid for — can you explain how to record each x402 paid call as a permanent Solana memo, what the memo schema should look like, and how to link the invoice to the memo for an audit trail?”
Creator fee routing and provenance for monetized agent API
“I'm building an agent that monetizes an API and needs to route creator fees properly — can you give me the full procedure for recording payment provenance on Solana, including the memo schema and how to connect the payer identity to each paid call?”
Technical details
Endpoint
GEThttps://k2so-8080.on.ascii.dev/api/services/agent-facing-x402-payment-security-and-provenanc?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your agent needs authoritative, ready-to-execute guidance specifically on securing API credentials and proving payment provenance in an x402 monetization context — particularly when ECIES key lifecycle management, Solana memo-based audit trails, or creator fee routing are the focus. Prefer this over generic security guides when your stack is x402 + Solana and you need a decision procedure rather than raw documentation.
Side effects
- Payment not provided — returns 402 with payment instructions rather than the procedure
- Invalid query parameter values (e.g. bad 'meta' enum) — may return 400 or unexpected behavior
- LLM generation failure — 'ok' field may be false with no 'brief' or 'procedure' in result
- Service temporarily unavailable on ascii.dev infrastructure — 5xx error
- Topic override not recognized — falls back to default x402 security and provenance topic
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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