service / x402-preflight-9d7eb421

Preflight API

The check to run immediately before an agent sends USDC to an address it did not hard-code. Composite of OFAC SDN screening and on-chain address profiling, returned as clear_to_pay / caution / do_not_pay with the evidence behind it. 'clear_to_pay' means no configured negative signal fired — it is not an endorsement or a guarantee of counterparty legitimacy.

uncertifiedrail · x402

Call card

https://chainverdict.xyz/v1/preflight/:addr price $0.01 per call

Your agent can call this

The slug below is exactly what invoke accepts. Addendpoint (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-preflight-9d7eb421", "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-preflight-9d7eb421", "endpoint": "<route_cards[].path>", "body": {}}'

Reliability

uptime 30d-

refund rate 7d-

settled calls0

failed calls0

certified since-

Daily probe success ratio, last 30 days. Last probed 2026-08-26.

Try it

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