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Lumière PayCheck Watch
x402
Lumière PayCheck Watch is a paid API for AI agents from lumierepaycheck.org, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-11).
Registers a monitoring watch on an x402 endpoint so that a webhook receives alerts when price, wallet, or trust conditions change before an agent pays.
Price / call$0.1
Success—
StatusUnknown
How this service works
Watch an x402 endpoint for 30 days: webhook alerts when it goes down, changes payout wallet, raises its price, or fails a paid delivery check.
Output
Returns a watch object containing a unique watch ID (e.g. w_…), a secret webhook token to authenticate incoming alert POSTs, and an expiry timestamp indicating how long the watch is active.
Example use cases
Pre-payment trust alert for agent
“Before my agent starts paying the endpoint at https://inference.api.com/v1/generate, set up a watch on it and send alerts to https://myapp.com/hooks/lumiere so I know immediately if the price or wallet address changes.”
Fraud detection on pay-per-call API
“I'm worried a paid API I use might swap its payout wallet — can you register a Lumière PayCheck watch on https://dataprovider.io/v2/lookup and have alerts sent to https://security.mycompany.com/webhook?”
Automated spend-safety for recurring agent workflow
“My agent calls https://translate.service.io/x402 every hour — set up a watch through Lumière PayCheck so my webhook at https://ops.myapp.com/notify fires if anything about the price or trust score changes between calls.”
Technical details
Endpoint
POSThttps://lumierepaycheck.org/v1/watch?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs proactive, event-driven monitoring of an x402 payment endpoint — specifically to catch price drift, wallet swaps, or trust degradation before authorizing spend. Prefer it over a one-shot trust report when you want ongoing alerts rather than a single snapshot, and over generic uptime monitors when the signal you care about is payment-specific (price, payout wallet, x402 trust score).
Side effects
- Invalid or unreachable x402 endpoint URL — returns error indicating the URL could not be validated
- Malformed or non-HTTPS webhook URL — rejected with a validation error
- Duplicate watch already registered for the same endpoint/webhook pair — may return conflict or existing watch
- Expired authentication or insufficient plan quota — returns authorization error
- Network timeout when probing the x402 endpoint during registration
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | x402 endpoint to watch |
| webhook | string | https URL that receives alert POSTs |
Output
Schema · Response
{
"type": "json",
"example": {
"id": "w_…",
"token": "keep-this-secret",
"expiresAt": "…"
}
}Tags
x402
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