watchOrderBooks

import pmxt

exchange = pmxt.Polymarket(pmxt_api_key="YOUR_PMXT_API_KEY")

ids = ["OUTCOME_ID_1", "OUTCOME_ID_2", "OUTCOME_ID_3"]
while True:
    books = exchange.watch_order_books(ids, limit=10)
    for outcome_id, book in books.items():
        bid = book.bids[0].price if book.bids else None
        ask = book.asks[0].price if book.asks else None
        print(f"{outcome_id[:20]}... bid={bid} ask={ask}")

import { Polymarket } from "pmxtjs";

const exchange = new Polymarket({ pmxtApiKey: "YOUR_PMXT_API_KEY" });

const ids = ["OUTCOME_ID_1", "OUTCOME_ID_2", "OUTCOME_ID_3"];
while (true) {
  const books = await exchange.watchOrderBooks(ids, 10);
  for (const [id, book] of Object.entries(books)) {
    console.log(`${id.slice(0, 20)}... bid=${book.bids[0]?.price} ask=${book.asks[0]?.price}`);
  }
}

// → Subscribe to multiple outcomes at once
{
  "id": "req-1",
  "action": "subscribe",
  "exchange": "polymarket",
  "method": "watchOrderBooks",
  "args": [["OUTCOME_ID_1", "OUTCOME_ID_2", "OUTCOME_ID_3"], 10]
}

// ← One data event per outcome, per update
{
  "event": "data",
  "id": "req-1",
  "method": "watchOrderBooks",
  "symbol": "OUTCOME_ID_1",
  "source": "polymarket",
  "data": {
    "bids": [{ "price": 0.42, "size": 100 }],
    "asks": [{ "price": 0.58, "size": 200 }],
    "timestamp": 1778450010713
  }
}

import pmxt

poly = pmxt.Polymarket(pmxt_api_key="YOUR_PMXT_API_KEY")

# Get all outcomes for a market
market = poly.fetch_market(market_id="MARKET_ID")
ids = [o.outcome_id for o in market.outcomes]

# Stream all orderbooks
while True:
    books = poly.watch_order_books(ids)
    for outcome_id, book in books.items():
        mid = (book.bids[0].price + book.asks[0].price) / 2 if book.bids and book.asks else 0
        print(f"{outcome_id[:20]}... mid={mid:.1%}")

import { Polymarket } from "pmxtjs";

const poly = new Polymarket({ pmxtApiKey: "YOUR_PMXT_API_KEY" });

const market = await poly.fetchMarket({ marketId: "MARKET_ID" });
const ids = market.outcomes.map((o) => o.outcomeId);

while (true) {
  const books = await poly.watchOrderBooks(ids);
  for (const [id, book] of Object.entries(books)) {
    const mid = book.bids[0] && book.asks[0]
      ? (book.bids[0].price + book.asks[0].price) / 2 : 0;
    console.log(`${id.slice(0, 20)}... mid=${(mid * 100).toFixed(1)}%`);
  }
}