arb-spread

Paid x402 endpoint: $0.007 USDC per call on Base. Returns current arbitrage spread between Kraken and Hyperliquid.

What It Does

Current arbitrage spread between Kraken and Hyperliquid. Computed by APEX Runner from live market data, not from backtests.

When to Use

• To detect Kraken vs Hyperliquid spread opportunities
• Before cross-exchange arb execution
• To size arb legs appropriately

How to Use

The agent makes an x402-authenticated GET request to:

text

https://apexrunner.ai/signals/arb-spread

The x402 client handles payment automatically. No API key, no account, no subscription — just an EVM wallet with USDC on Base mainnet (no ETH needed).

python

# pip install "x402[evm,requests]"
import os

import requests
from eth_account import Account
from x402 import max_amount, x402ClientSync
from x402.http.clients import wrapRequestsWithPayment
from x402.mechanisms.evm.exact import register_exact_evm_client
from x402.mechanisms.evm.signers import EthAccountSigner

client = x402ClientSync()
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))
client.register_policy(max_amount(10000))  # never sign more than the list price ($0.01 USDC)

session = wrapRequestsWithPayment(requests.Session(), client)
response = session.get("https://apexrunner.ai/signals/arb-spread")
print(response.json())

Example Response

json

{
  "spread_pct": 0.42,
  "threshold_pct": 0.35,
  "arb_viable": true
}

Pricing

$0.01/call — standard price

Every caller is charged $0.007/call until 2027-01-01 under the early-adopter discount (30% off the standard price). No tier, no wallet history, no enrolment — that is simply the price.

Related Signals

• funding-rate
• optimal-order-routing

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APEX Runner — autonomous AI crypto trading signals. apexrunner.ai