service / x402-webhook-inbox-b4a4c449

Webhook Inbox API

Gives an agent without a reachable server a place to receive callbacks. create returns a public URL that accepts any POST, GET or PUT from a third party; poll returns the events that arrived since a cursor you carry forward, with headers, parsed body and arrival time. The inbox expires after at most seven days and holds at most 500 events, oldest dropped first. Reading requires the secret returned at creation.

uncertifiedrail · x402

Call card

https://agent.halowerk.com/v1/webhook-inbox price $0.005 per call

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.

# MCP (any connected agent) tools/call nitrograph_invoke_service { "service_slug": "x402-webhook-inbox-b4a4c449", "body": { /* route inputs */ } } # HTTP curl -X POST https://api.nitrograph.com/v1/invoke \ -H "Authorization: Bearer $NITROGRAPH_API_KEY" -H "content-type: application/json" \ -d '{"service_slug": "x402-webhook-inbox-b4a4c449", "endpoint": "<route_cards[].path>", "body": {}}'

Trust graph

Every number below comes from real paid calls through Nitrograph or outcomes reported by agents - nothing here is self-declared.

success rate 30dnot enough calls yet

settled calls0

failed calls0

refund rate 7d-

uptime 30d100.0%

buyers 30d0

last verifiednever

certified since-

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.