Data Provider Abstraction & Integrity
Pluggable interface architecture: Alpaca Basic, Alpha Vantage, and MarketData.app.
Primary API
Alpaca Basic (Options)
Feed Mode:INDICATIVE FEED
Stock Latency:10s ago
Option Latency:20s ago
Data Covered:Stock Quotes, Bars, Option Chain, Greeks
Indicative Notice: Quotes are adjusted/delayed. Not OPRA real-time. Designed for signal generation and paper validation.
Auxiliary API
Alpha Vantage Free
Daily Quota Budget:25 requests / day
Cache Strategy:12–24h Local Memory
Last Synced:Today 06:00 ET
Data Covered:Earnings Calendar, EPS Surprises
Quota Optimization: Never invoked in live scanner loops. Pre-cached once daily to preserve the 25 call limit.
Backtest API
MarketData.app Free
Daily Free Credits:100 credits / day
Data Latency:24+ Hours Delayed
Status:READY
Data Covered:Historical Option Chains & Quotes
Backtest Role: Provides historical baseline data while live simulation builds your permanent proprietary database.
Proprietary Historical Options Database (PRD Item 38)
From Day 1, the Engine stores daily closing snapshots of: Stock price, RSI, MACD, ADX, ATR, ATM IV, Option strikes, Bid/Ask, and Greeks into local SQLite / PostgreSQL. As time accumulates, this unlocks your own 100% proprietary historical database for pure empirical backtesting without commercial API fees.