Arbitrage Scanner

{
  "common_symbols_count": 189,
  "exchange_gaps": [
    {
      "bithumb_krw": 3009000,
      "gap_pct": 0.3,
      "symbol": "ETH",
      "upbit_krw": 3000000
    }
  ],
  "fx_rate": 1475.27,
  "market_share": {
    "bithumb_pct": 21.5,
    "bithumb_volume_krw": 410000000000,
    "upbit_pct": 78.5,
    "upbit_volume_krw": 1500000000000
  },
  "meta": {
    "price": "$0.01",
    "update_interval": "60s"
  },
  "premiums": [
    {
      "binance_usd": 95200,
      "caution_deposit_soaring": false,
      "caution_volume_soaring": false,
      "global_krw": 140453000,
      "korean_name": "비트코인",
      "premium_pct": 1.1,
      "symbol": "BTC",
      "upbit_krw": 142000000,
      "upbit_volume_krw": 500000000000,
      "warning": false
    }
  ],
  "reverse_premiums": [
    {
      "premium_pct": -63.8,
      "symbol": "SNT"
    }
  ]
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.printmoneylab.com/api/v1/arbitrage-scanner'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://api.printmoneylab.com/api/v1/arbitrage-scanner' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.printmoneylab.com%2Fapi%2Fv1%2Farbitrage-scanner
const res = await pay("https://api.printmoneylab.com/api/v1/arbitrage-scanner");
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.printmoneylab.com/api/v1/arbitrage-scanner")
    print(res.status_code, res.text)