Research

{
  "card": "research",
  "cross_venue": {
    "cheapest": "trade.xyz",
    "max_mark_spread_pct": 0.0875,
    "richest": "Aster"
  },
  "disclaimer": "Data, not financial advice.",
  "generated_at": 1792010000,
  "history": {
    "available": true,
    "gap_perp_vs_ref_pct": {
      "avg": 0.04,
      "max": 0.31,
      "min": -0.12
    },
    "points": 72,
    "window": "last 72h, 1h buckets"
  },
  "label": "Data, not financial advice.",
  "market": {
    "new_york_time": "Wed 16:00",
    "session": "regular"
  },
  "perps": {
    "aster": {
      "funding_annualized_pct": 0,
      "gap_vs_spot_pct": 0.1204,
      "gap_vs_trade_xyz_pct": 0.0875,
      "mark": 366.01,
      "venue": "Aster"
    },
    "lighter": {
      "funding_annualized_pct": 3.504,
      "gap_vs_spot_pct": 0.0547,
      "gap_vs_trade_xyz_pct": 0.0219,
      "mark": 365.77,
      "venue": "Lighter"
    },
    "trade_xyz": {
      "basis_mark_vs_oracle_pct": 0.0301,
      "funding_annualized_pct": 5.475,
      "gap_vs_spot_pct": 0.0328,
      "index": 365.58,
      "mark": 365.69,
      "venue": "trade.xyz (Hyperliquid xyz)"
    }
  },
  "spot": {
    "change_pct": 1.2099,
    "prev_close": 361.2,
    "price": 365.57,
    "price_session": "regular",
    "symbol": "TSLA"
  },
  "ticker": "TSLA",
  "verdict": {
    "confidence": 0.3,
    "reasons": [
      "perp vs reference gap +0.03%: in line, no edge"
    ],
    "score": 0,
    "verdict": "watch"
  },
  "xstock": {
    "chain": "solana",
    "gap_trade_xyz_vs_xstock_pct": 0,
    "gap_xstock_vs_spot_pct": 0.0328,
    "price": 365.69,
    "symbol": "TSLAx"
  }
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://perp-gap-api.perpgap.workers.dev/research?ticker=TSLA'

# 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/research?ticker=TSLA' \
  | 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 $0.03 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.03" });
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 $0.03 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fperp-gap-api.perpgap.workers.dev%2Fresearch
const res = await pay("https://perp-gap-api.perpgap.workers.dev/research?ticker=TSLA");
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 $0.03 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.03"})
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/research?ticker=TSLA")
    print(res.status_code, res.text)