Arithmax Chest

A standalone FastAPI service and Python client for querying centralized market data. Provider API keys stay on the server; research projects use only the client URL and token.

Server

python -m pip install -e '.[all]'
export DATA_API_TOKEN='private-client-token'
export BINANCE_API_KEY='server-only-if-required'
export POLYGON_API_KEY='server-only'
export DATABENTO_API_KEY='server-only'
uvicorn achest.server:app --host 0.0.0.0 --port 8000

Client

from achest import MarketDataClient

with MarketDataClient('https://data.example.com', token='private-client-token') as client:
    frame = client.get(['BTCUSDT', 'ES.FUT'], '2024-01-01', '2024-01-31')
    client.download(['BTCUSDT'], '2024-01-01', '2024-01-31', 'data/btc.parquet')

auto routes crypto to Binance, futures to Databento first, and equities to Yahoo. Supported response formats are JSON, CSV, and Parquet. Large downloads should be moved to a background job endpoint before production use.

PyPI publishing

python -m pip install build twine
python -m build
python -m twine upload dist/*