Single-print summary — what just executed. Cheaper than fetching the full
fetch_trades tape.
Parameters
Same shape as fetch_midpoint — uses the
unified MidpointRequest type.
Returns
Trade timestamp (Unix milliseconds).
Kalshi uses last_price_dollars from the market summary plus a
/markets/trades?limit=1 lookup to enrich size and side. Polymarket
uses CLOB GET /last-trade-price?token_id=….
use openpx::MidpointRequest;
let t = ex.fetch_last_trade_price(MidpointRequest {
market_id: "KXBTC-25MAR14-T20000".into(),
..Default::default()
}).await?;
{ "price": 0.45, "side": "buy", "size": 100.0, "ts_ms": 1714000000000 }
