service / x402-validate-12a0b2f9
SiteCheck
Checks the check digit and structure of an identifier with no network call: ISBN-10 and ISBN-13 (with ISBN-10 to 13 conversion), EAN-8, UPC-A, EAN-13 and GTIN-14 (with the GS1 prefix country), VIN (manufacturer code, region, model year), IMEI, ISIN (country) and a generic Luhn number. type=auto detects the type. Up to 50 comma-separated values give a results array.
uncertifiedrail · x402
Call card
https://api.sitecheck-api.workers.dev/api/validate
price $0.001 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-validate-12a0b2f9", "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-validate-12a0b2f9", "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 30d0.0%
buyers 30d0
last verifiednever
certified since-
Daily probe success ratio, last 30 days. Last probed 2026-10-29.
Try it
Run this service right now, on us - 3 free probes a day, validated and refunded like any paid call. Query params optional.