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Authentication

alpaca-rust keeps market data and trading credentials separate.

Market Data​

  • ALPACA_DATA_API_KEY
  • ALPACA_DATA_SECRET_KEY
  • optional ALPACA_DATA_BASE_URL
  • legacy base URL fallback: APCA_API_DATA_URL

Trading​

  • ALPACA_TRADE_API_KEY
  • ALPACA_TRADE_SECRET_KEY
  • optional ALPACA_TRADE_BASE_URL

Mock Server​

alpaca-mock does not require Alpaca trading credentials for its own listening socket, but market-data-backed flows still use:

  • ALPACA_DATA_API_KEY
  • ALPACA_DATA_SECRET_KEY

Optional runtime binding:

  • ALPACA_MOCK_LISTEN_ADDR

Builder Helpers​

  • alpaca_data::Client::from_env()
  • alpaca_trade::Client::from_env()
  • Client::builder().credentials_from_env()?.base_url_from_env()?