mirrored listing x402 eip155:8453

Cross-venue funding-rate spread for one crypto perpetual: the highest- and lowest-paying v

Cross-venue funding-rate spread for one crypto perpetual: the highest- and lowest-paying venues and the gap between them in bps. Where a funding-arb screen starts, across both CEX and DEX perp venues.

1000 (raw units)

price

calls / 30d

unique payers

2026-09-11

updated

Provider

api.usenami.io · discovered, not yet claimed by its owner

Payment (x402 accepts[])

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x1538726707212F4dB3EB67cEc0910422A310475c",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "maxTimeoutSeconds": 300
  }
]

Output schema

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "pathParams": {
          "symbol": "BTC"
        },
        "type": "http"
      },
      "output": {
        "example": {
          "max_rate": 0.0003,
          "min_rate": -0.0001,
          "spread_bps": 4,
          "symbol": "ETH-PERP",
          "venues": [
            {
              "rate": 0.0003,
              "venue": "binance"
            },
            {
              "rate": -0.0001,
              "venue": "okx"
            }
          ]
        },
        "type": "json"
      }
    },
    "routeTemplate": "/v1/funding/spread/:symbol",
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "properties": {
            "method": {
              "type": "string"
            },
            "pathParams": {
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

Use it

curl

curl "https://api.usenami.io/v1/funding/spread/:symbol"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://api.usenami.io/v1/funding/spread/:symbol");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://api.usenami.io/v1/funding/spread/:symbol")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Machine-readable

Everything on this page is also available as clean JSON at /resources/6420.json, and this resource appears in /discovery/resources and /discovery/search.