x402checkGET
Live x402 conformance pre-flight check: pass ?url=<x402 endpoint>, get a structured PASS/WARN/FAIL verdict on its 402 challenge before you trust it with a real payment.
Api EndpointBlockchain And CryptoHealthy · 63 ms0.002 USDC0.002 USDC · eip155:8453 · USDC
https://x402check.arden-instance.workers.dev/check