Alpaca (market data)
LLM connections
Add / edit connection
Parameters
Chart with support/resistance (weekly → 5-min)
Uses the strategy, symbols, dates and parameters from the Backtest tab. Levels appear on the chart from the moment they were actually known (no look-ahead). Lines = individual pivot levels coloured by timeframe; shaded bands = merged zones that are strong enough to count.
Data library
Alpaca 1-minute bars are stored on your server and reused by every backtest, chart, export and optimiser run. A month that is complete is never downloaded again; the current month is topped up incrementally (only the newest day onward), at most every 6 hours unless you press Update. Switching the data feed (iex/sip) re-downloads once.
LLM auto-improve
Uses the strategy, symbols, dates and parameters currently set on the Backtest tab as the starting point. The LLM only sees train results; a run only counts as success when the held-out validation slice also passes. Costs, leverage and risk size are locked so it can’t cheat.