Export

{
  "count": 1,
  "date": "2026-10-14",
  "rows": [
    {
      "aster_funding_hourly": 0,
      "aster_mark": 366.01,
      "basis_mark_vs_oracle_pct": 0.0301,
      "funding_annualized_pct": 5.475,
      "funding_hourly": 0.00000625,
      "gap_aster_vs_xyz_pct": 0.0875,
      "gap_lighter_vs_xyz_pct": 0.0219,
      "gap_perp_vs_ref_pct": 0.0328,
      "gap_perp_vs_xstock_pct": 0,
      "lighter_funding_hourly": 0.000004,
      "lighter_mark": 365.77,
      "max_mark_spread_pct": 0.0875,
      "open_interest_usd": 42087597,
      "perp_mark": 365.69,
      "perp_oracle": 365.58,
      "ref_price": 365.57,
      "ref_session": "regular",
      "source": "snapshot",
      "ticker": "TSLA",
      "time": "2026-10-14T20:00:00.000Z",
      "ts": 1792008000,
      "xstock_price": 365.69
    }
  ],
  "snapshots": 1
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://perp-gap-api.perpgap.workers.dev/export?date=2026-10-14&format=csv'

# 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://perp-gap-api.perpgap.workers.dev/export?date=2026-10-14&format=csv' \
  | 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 $0.25 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.25" });
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 $0.25 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fperp-gap-api.perpgap.workers.dev%2Fexport
const res = await pay("https://perp-gap-api.perpgap.workers.dev/export?date=2026-10-14&format=csv");
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 $0.25 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.25"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://perp-gap-api.perpgap.workers.dev/export?date=2026-10-14&format=csv")
    print(res.status_code, res.text)