the402 endpoint detail

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api.usenami.io orderbook multi-venue-slippage

https://api.usenami.io/v1/orderbook/multi-venue-slippage

payable

Per-venue slippage scan for one crypto perpetual at $1K/$5K/$10K notional, across tracked CEX and DEX venues — every venue sorted by lowest slippage, with BBO and depth. Raw scan, no opinionated ranking: where a given size is cheapest to execute.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.005
Network
base
Pay to
0x1538726707212F4dB3EB67cEc0910422A310475c
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
636 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:14:45.609Z (1d ago)
Category
other

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.usenami.io%2Fv1%2Forderbook%2Fmulti-venue-slippage"