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x402 Trust: 30-Day Endpoint Watch
x402
x402 Trust: 30-Day Endpoint Watch is a paid API for AI agents from x402-trust.com, paid per call via x402, $0.2/call, status unknown (last checked 2026-10-28).
Registers a 30-day active monitoring watch on an x402 endpoint, delivering uptime, compliance, and settlement alerts via webhook or Slack.
Price / call$0.2
Success—
StatusUnknown
How this service works
Monitor one endpoint for 30 days: alerts on payTo, price, asset or network changes, 402-spec regressions, delisting, and liveness. Push to signed HTTPS webhooks or Slack/Discord URLs (max 5 each), all connection-tested before payment. Returns a one-time bearer secret; edit URLs or cancel early via bearer-authed PATCH/DELETE /v1/watch/{id}, or poll the append-only event log.
Output
Returns a watch record containing a one-time secret token (for bearer authentication of future management calls), the watch ID, poll URL for reading the append-only event log, edit/cancel/renew URLs, an expiry timestamp 30 days out, and a structured list of next-step instructions for storing the secret, polling events, verifying webhook signatures, editing watch settings, and renewing or cancelling the watch.
Example use cases
Webhook alert for API downtime
“Start monitoring https://payments.myservice.com/v1/charge for 30 days and ping my webhook at https://alerts.myapp.io/x402 whenever it goes down or fails a 402-compliance check — use a liveness sensitivity of 2.”
Slack notifications for partner API
“Watch https://api.partner.com/v1/data with x402 trust monitoring for the next 30 days and send me a Slack alert to https://hooks.slack.com/services/ABC/DEF/xyz whenever there's an uptime or compliance event.”
Audit trail for high-value endpoint
“Set up a 30-day watch on https://api.defi-provider.io/v1/swap so I can poll the event log and audit every uptime failure, 402-envelope violation, and USDC settlement anomaly — no webhooks needed, I'll poll manually.”
Technical details
Endpoint
POSThttps://x402-trust.com/v1/watch-endpoint-30d?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need ongoing, 30-day active monitoring of a specific x402 endpoint with push-based alerting (webhook or Slack) or a pollable event log. It is the right choice when you want continuous uptime probing, 402-envelope compliance checking, and USDC settlement anomaly detection — not just a one-time trust score lookup. Use a different endpoint if you only need a free grade or a single full data snapshot without sustained monitoring.
Side effects
- Invalid or unreachable endpoint URL returns validation error
- Webhook URL fails connection test during setup, blocking watch creation
- Missing required delivery fields (webhook_urls or slack_url) returns 422
- Payment of $0.20 USDC not received causes 402 rejection before watch is created
- Secret token lost after creation cannot be recovered — only its SHA-256 hash is stored
- Watch expiry not renewed within 30 days causes monitoring to lapse
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| events | array | Event types to subscribe to (default all): payto_change, price_change, asset_network_change, spec_regression, delisting, liveness_down, liveness_recovered, liveness_flapping. |
| delivery | object | Optional push delivery: { webhook_url(s), slack_url(s) } (https public hosts, max 5 each). Each field accepts a single URL string or an array of URLs; webhook_url(s) = signed HTTPS webhook; slack_url(s) = Slack or Discord incoming webhook. All URLs are connection-tested before you're charged. Polling is always available. |
| endpointrequired | string | Full x402 resource URL to watch (must be in our observation set). |
| liveness_sensitivity_n | number | Consecutive missed probes before a liveness_down is surfaced to you (1=paranoid … 10=relaxed; default 2). |
Output
Schema · Response
{
"secret": "string",
"watched": "array",
"delivery": "object",
"edit_url": "string",
"poll_url": "string",
"watch_id": "string",
"renew_url": "string",
"cancel_url": "string",
"expires_at": "number",
"next_steps": "array",
"subscribed_events": "array | 'all'",
"probe_interval_sec": "number",
"liveness_sensitivity_n": "number"
}Tags
x402
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