service / x402-requirements-00827747

x402 Dev Tools

Builds an x402 v2 PaymentRequired object for a price in dollars on one or more networks, with the right USDC contract, atomic amount and EIP-712 domain (name and version) for each, plus the base64 PAYMENT-REQUIRED header value to send with the 402.

uncertifiedunhealthyrail · x402

Call card

https://dev.kagurazaka.dev/v1/requirements price $0.002 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-requirements-00827747", "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-requirements-00827747", "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 30d13.0%

buyers 30d0

last verifiednever

certified since-

Daily probe success ratio, last 30 days. Last probed 2026-11-06 (last probe failed).

Try it

Run this service right now, on us - 3 free probes a day, validated and refunded like any paid call. Query params optional.