x402check.arden-instance.workers.dev publishes 2 machine-payable endpoints over the x402 protocol, priced from $0.002 to $0.002 per call. Each was probed directly; the response code below is what it returned.
| Endpoint | Method | Price | Probe |
|---|---|---|---|
| /base/gas | GET | $0.002 | 402 |
| /check | GET | $0.002 | 402 |
Read-only Base mainnet data: GET /base/block, /base/tx?hash=, /base/balance?address=, /base/erc20?token=&holder=, /base/gas. Small JSON payloads over a Base node; pay ~$0.002 USDC on Base per call.
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.