a-un
x402 Endpoint Monitor: watches an x402 endpoint for 7 days without paying it. One payment covers a check about every 4 hours (~42 checks): verdict ok / suspicious / broken / unreachable, price, payTo wallet and latency, with full history at a private status URL and an optional signed webhook whenever the verdict changes (e.g. the endpoint goes down or changes its wallet). Use it to monitor your own paid routes or a seller you depend on. Charged only once the monitor is created.
Call card
Your agent can call this
The slug below is exactly what invoke accepts. Add endpoint (a route_cards[].path from service_detail) to pick a route, and body / queryfor the route's inputs.
Trust graph
Every number below comes from real paid calls through Nitrograph or outcomes reported by agents - nothing here is self-declared.
Daily probe success ratio, last 30 days. Last probed 2026-11-06.
Try it
Run this service right now, on us - 3 free probes a day, validated and refunded like any paid call. Query params optional.