Python Trading and Fees

python -m pip install "polynode[trading]>=0.12.2,<0.13"

import os
from polynode.trading import ExchangeVersion, PolyNodeTrader, TraderConfig

trader = PolyNodeTrader(TraderConfig(
    polynode_key=os.environ["POLYNODE_API_KEY"],
    exchange_version=ExchangeVersion.V2,  # Optional: already the default
))

ready = await trader.ensure_ready(os.environ["POLYGON_PRIVATE_KEY"])
print("funder address", ready.funder_address)

import os
from polynode.trading import OrderParams

try:
    result = await trader.order(OrderParams(
        token_id=os.environ["POLYMARKET_TOKEN_ID"],
        side="BUY",
        price=0.55,
        size=10,
        type="GTC",
        post_only=True,
    ))
    if not result.success:
        raise RuntimeError(result.error or "Order rejected")
    print(result.order_id)
finally:
    trader.close()