ArbiPulse · Calculator

import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPay("https://arbipulse.theaslangroupllc.com/api/calculator", {
  method: "GET",
});
const data = await res.json();

curl -X GET \
  "https://arbipulse.theaslangroupllc.com/api/calculator?trade_size_usd=10000" \
  -H "X-PAYMENT: <signed x402 payment>"

{
  "annualized_yield_pct": null,
  "break_even_analysis": {
    "current_spread_bps": 22,
    "gap_bps": 4,
    "min_spread_bps_to_break_even": 26
  },
  "fee_breakdown": {
    "bridge_fee_usd": 0,
    "flash_fee_usd": 0,
    "gas_usd": 0.5,
    "slippage_usd": 5,
    "taker_fee_buy_usd": 10,
    "taker_fee_sell_usd": 10,
    "total_costs_pct": 0.255,
    "total_costs_usd": 25.5,
    "withdrawal_fee_usd": 0
  },
  "gross_spread_pct": 0.221,
  "gross_spread_usd": 22.12,
  "inputs": {
    "arb_type": "spot",
    "entry_price": 67800,
    "exit_price": 67950,
    "gas_usd": 0.5,
    "slippage_bps": 5,
    "taker_fee_bps": 10,
    "trade_size_usd": 10000
  },
  "net_profit_pct": -0.034,
  "net_profit_usd": -3.38,
  "scale_analysis": [
    {
      "net_pct": 0.032,
      "net_profit_usd": 16.1,
      "size_usd": 50000
    },
    {
      "net_pct": 0.057,
      "net_profit_usd": 57.2,
      "size_usd": 100000
    },
    {
      "net_pct": 0.072,
      "net_profit_usd": 357.5,
      "size_usd": 500000
    }
  ],
  "suggestion": "This spot arb is marginal at $10k. Minimum $50k+ for positive P&L. Consider perps funding carry for better risk-adjusted returns.",
  "verdict": "NOT VIABLE — costs exceed spread"
}