Kalshi KXETHMAX: Ether maximum price in a window — order book & trade data

import os
import requests

API = "https://api.aymardata.com/v1"
KEY = os.environ["AYMARDATA_API_KEY"]  # export AYMARDATA_API_KEY=ad_live_…
H = {"Authorization": f"Bearer {KEY}", "User-Agent": "aymardata-docs/1.0"}

# KXETHMAX: ten minutes of trades and book updates for one contract
trades = requests.get(
    f"{API}/trades",
    headers=H,
    params={
        "source": "kalshi",
        "market": "KXETHMAX-26OCT26-T2800",
        "start": "2026-10-25T16:00:00Z",
        "end": "2026-10-25T16:15:00Z",
        "limit": 500,
    },
    timeout=30,
).json()["data"]
last = trades[-1]
print(last["ticker"], last["yes_bid"], last["yes_ask"])

book = requests.get(
    f"{API}/book",
    headers=H,
    params={
        "source": "kalshi",
        "market": "KXETHMAX-26OCT26-T2800",
        "at": "2026-10-25T16:05:00Z",
        "depth": 10,
    },
    timeout=30,
).json()
print(book.get("spread"), len(trades))