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x402 Agent Payment Hook Configuration Verification: Pre-Payment Procedure
x402
x402 Agent Payment Hook Configuration Verification: Pre-Payment Procedure is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status down (last checked 2026-10-31).
Returns a decision procedure for agents to audit which lifecycle hooks a merchant exposes and their execution semantics before sending USDC payment.
Price / call$0.002
Success—
StatusDown
How this service works
Paid agent-facing procedure on x402 agent payment hook configuration verification: pre-payment checklist for agents to verify what lifecycle hooks a merchant exposes (pre-payment hook, on-settlement hook, on-failure/refund hook, receipt delivery hook), the execution semantics of each hook (synchronous vs async, retry count, timeout, idempotency, side-effect surface like wallet debits or data writes), and the blast radius of misconfigured hooks before sending USDC. Blunt decision procedure, not
Output
A structured decision procedure response containing: which lifecycle hooks the merchant exposes (pre-payment, on-settlement, on-failure/refund, receipt delivery), execution semantics per hook (sync/async, retry count, timeout, idempotency), side-effect surface (wallet debits, data writes), blast radius assessment for misconfigured hooks, and a prose brief summarizing agent-actionable conclusions. Also includes metadata: service slug, generation source (llm/reasoning/deterministic), ISO-8601 timestamp, and payment confirmation fields.
Example use cases
Pre-payment merchant hook safety audit
“I'm about to send USDC to a new merchant via x402 — can you first check what payment lifecycle hooks they expose and tell me if any of them have risky side effects like wallet debits or data writes I should know about before I proceed?”
Settlement hook timing verification
“For this x402 merchant, can you verify whether their on-settlement hook runs synchronously or asynchronously, and what the timeout and retry count is? I need to know if my agent will block waiting for it.”
Idempotency check before retry logic
“Can you pull the pre-payment hook configuration for this merchant and confirm whether their hooks are idempotent? I'm building retry logic into my agent and need to know if re-triggering a hook could cause duplicate charges or writes.”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/x402-agent-payment-hook-configuration-verificati?utm_source=zero.xyzWhen to prefer
Use this endpoint when an agent is about to make an x402 USDC payment to a merchant and needs to audit the merchant's payment lifecycle hooks before committing funds. Prefer this over generic payment validation when you specifically need to understand hook execution semantics (sync/async, retries, timeouts, idempotency) and potential side-effect blast radius. Ideal for risk-averse agent payment flows where hook misconfiguration could cause unintended wallet debits or data mutations.
Side effects
- Merchant endpoint does not expose hook metadata — returns ok:false with no hook details
- Payment of $0.002 USDC fails or is rejected — no result returned
- Topic override is invalid or unrecognized — procedure may return generic output
- Merchant hook configuration is unavailable or undocumented — brief may be incomplete
- Network timeout contacting k2so.wrong.systems — request fails with no response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"paid": true,
"result": {
"ok": true,
"brief": "plain prose decision procedure (120+ words)",
"model": "deepseek/deepseek-v4-flash-0731",
"topic": "string topic",
"service": "x402-agent-payment-hook-configuration-verificati",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "x402-agent-payment-hook-configuration-verificati",
"provider": "K-2SO"
}
}Tags
x402
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