What You'll Get

The FlashAlpha Lab API gives you programmatic access to real-time options exposure analytics:

GEX - Gamma exposure by strike (dealer hedging pressure)
DEX - Delta exposure (directional positioning)
VEX - Vanna exposure (vol-sensitivity of dealer delta)
CHEX - Charm exposure (time-decay of dealer delta)
Stock & option quotes, key levels, AI narrative, and more

The free Starter plan includes 5 requests/day - enough to explore the API. You can also use the interactive tools to visualize exposure data without writing code.

Step 1: Create Your Free Account

Go to flashalpha.com/pricing
Click Get Started Free under the Starter plan
Enter your email and choose a password
Check your inbox for a 6-digit code and enter it to verify your email

No credit card required. The Starter plan is free, no credit card needed - upgrade when you need higher limits.

Step 2: Copy Your API Key

Sign in to your FlashAlpha account
Your API key is displayed on the Profile page
Click the copy button next to your key

Your API key authenticates every request. Pass it in the X-Api-Key header.

Step 3: Make Your First Call

Install an SDK All SDKs

Python: pip install flashalpha

JS/TS: npm install flashalpha

C#: dotnet add package FlashAlpha

Go: go get github.com/FlashAlpha-lab/flashalpha-go

Java: Maven/Gradle - github.com/FlashAlpha-lab/flashalpha-java

Let's fetch gamma exposure (GEX) for SPY:

curl -H "X-Api-Key: YOUR_API_KEY" \
  "https://lab.flashalpha.com/v1/exposure/gex/SPY"

from flashalpha import FlashAlpha

fa = FlashAlpha("YOUR_API_KEY")
gex = fa.gex("SPY")
print(f"Net GEX: ${gex['net_gex']:,.0f}")
print(f"Flip: ${gex['gamma_flip']}")

import { FlashAlpha } from 'flashalpha';

const fa = new FlashAlpha('YOUR_API_KEY');
const gex = await fa.gex('SPY');
console.log(`Net GEX: $${gex.net_gex.toLocaleString()}`);
console.log(`Flip: ${gex.gamma_flip}`);

var fa = new FlashAlphaClient("YOUR_API_KEY");
var gex = await fa.GexAsync("SPY");

Console.WriteLine($"Net GEX: {gex.GetProperty("net_gex")}");
Console.WriteLine($"Flip: {gex.GetProperty("gamma_flip")}");

FlashAlphaClient fa = new FlashAlphaClient("YOUR_API_KEY");
JsonObject gex = fa.gex("SPY");

System.out.println("Net GEX: " + gex.get("net_gex"));
System.out.println("Flip: " + gex.get("gamma_flip"));

fa := flashalpha.NewClient("YOUR_API_KEY")
gex, _ := fa.Gex(ctx, "SPY")

fmt.Printf("Net GEX: %v\n", gex["net_gex"])
fmt.Printf("Flip: %v\n", gex["gamma_flip"])

You should get a JSON response like this:

{
  "symbol": "SPY",
  "underlying_price": 597.505,
  "as_of": "2026-03-06T16:30:45Z",
  "net_gex": -2500000000,
  "gamma_flip": 590.0,
  "gex_interpretation": "Negative gamma  -  dealers amplify moves",
  "strikes": [
    { "strike": 590.0, "call_gex": 1200000, "put_gex": -3400000, "net_gex": -2200000 }
  ]
}