Stock Quote and Options Chain API Endpoints

Name: FlashAlpha Lab API
Author: FlashAlpha

The Market Data endpoints provide real-time pricing for equities and full option chains with computed Greeks. These are the foundational data feeds that power FlashAlpha’s exposure analytics.

Endpoints

GET /stockquote/{ticker}

Real-time bid, ask, mid, and last price for any tracked symbol. Use this to get current equity pricing for your models.

GET /optionquote/{ticker}

Full option chain with BSM Greeks, SVI-smoothed implied volatility, open interest, and volume across all expirations and strikes. Requires Growth plan or higher.

Reference & Discovery Endpoints

These endpoints help you discover available symbols and option chain metadata before making detailed queries.

GET /v1/surface/{symbol}

Returns a cached volatility surface grid for the given symbol. Public endpoint — no authentication required.

Errors: 503 — Surface data is still loading, try again shortly.

GET /v1/options/{ticker}

Returns option chain metadata: available expirations and the strikes within each expiration.

{
  "symbol": "SPY",
  "expirations": [
    { "expiration": "2026-03-07", "strikes": [550.0, 555.0, 560.0, 565.0, 570.0, 575.0, 580.0] },
    { "expiration": "2026-03-14", "strikes": [550.0, 555.0, 560.0, 565.0, 570.0] }
  ],
  "expiration_count": 2,
  "total_contracts": 12
}

Errors: 404 — No options data for symbol.

GET /v1/tickers

Returns the list of ticker symbols currently tracked by the platform.

{ "tickers": ["AAPL", "AMZN", "GOOGL", "..."], "count": 8 }

GET /v1/symbols

Returns the list of symbols available for options data. Any US equity or ETF can be queried.

{ "symbols": ["SPY", "QQQ"], "count": 2, "note": "Any US equity or ETF...", "last_updated": "..." }