Fetch orderbook data from polymarket

polymarket_order_book.py

#!/usr/bin/env -S uv run --script
# /// script
# requires-python = ">=3.12"
# dependencies = [
#     "requests",
# ]
# ///
import requests

def main():
    # Subgraph query to get active markets
    query = """
    query {
      markets(where: {resolved: false}) {
        id
        outcomes {
          id
          token {
            id
          }
        }
      }
    }
    """
    print("Fetching active markets from subgraph...")
    subgraph_response = requests.post("https://api.thegraph.com/subgraphs/name/Polymarket/public-polymarket-subgraph", json={"query": query})
    data = subgraph_response.json()["data"]["markets"]
    
    if not data:
        print("No active markets found.")
        return
    
    first_market = data[0]
    first_outcome = first_market["outcomes"][0]
    token_id = first_outcome["token"]["id"]
    
    print(f"Selected market ID: {first_market['id']}")
    print(f"Selected token ID: {token_id}")
    
    # Fetch order book from CLOBL API
    print("Fetching order book from CLOBL API...")
    order_book_response = requests.get(f"https://clob.polymarket.com/book?asset_id={token_id}")
    
    if order_book_response.status_code == 200:
        print("Order book fetched successfully:")
        print(order_book_response.json())
    else:
        print(f"Failed to fetch order book: {order_book_response.text}")

if __name__ == "__main__":
    main()