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Instructions for using the TopstepX Cython Extension for trading and market data.
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| name | topstep_cython |
| description | Instructions for using the TopstepX Cython Extension for trading and market data. |
This extension provides a high-performance, async interface to the TopstepX platform, replacing the legacy Node.js bridge.
from topstep_ext import TopstepClient
import os
async def main():
client = TopstepClient()
# Login (Credentials via Env or Args)
token = await client.login(
os.getenv("QUANUX_TOPSTEP__USERNAME"),
os.getenv("QUANUX_TOPSTEP__PASSWORD"),
os.getenv("QUANUX_TOPSTEP__API_KEY")
)
# 1. Search Accounts
accounts = await client.search_accounts(only_active=True)
account_id = accounts['accounts'][0]['id'] # Returns long long
# 2. Market Data
contracts = await client.search_contracts(search_text="NQ")
contract_id = contracts['contracts'][0]['id']
# 3. Order Placement
order = {
"accountId": account_id,
"contractId": contract_id,
"type": 1, # Limit
"side": 1, # Buy
"size": 1,
"limitPrice": 15000.00
}
res = await client.place_order(account_id, order)
print(f"Order Placed: {res}")
extensions/cpp/topstep/cython/python3 setup.py build_ext --inplacepytest extensions/cpp/topstep/cython/tests/int64 (long long). Ensure your logic handles large integers.