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api.402rates.com v1 ping
https://api.402rates.com/v1/ping
answers 402
One paid call for 0.001 USDC that settles a real payment and answers immediately: the cheapest way to prove a wallet, a facilitator and a network before spending on a data call. It reads no third-party source, so a failure is your integration or ours, never somebody else's uptime. The response names the rail that settled it and the network mode. Payable on Base, Polygon, Arbitrum and XDC.
We sent a real
GET request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.001
- Network
- base
- Pay to
- 0xf567Cfe0FDb87A1D6Ca330e3f30f0D3DA0F7cb98
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- GET
- Response latency
- 580 ms
- Payment options
- 4 usable of 4
- Last checked
- 2026-09-06T01:07:42.914Z (19d ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.402rates.com%2Fv1%2Fping"