Options Data API
REST API delivering US equity options chains, gamma exposure (GEX), options flow prints filtered by premium, and contract screener metrics.
14-day free trial · no credit card required
curl -H "Authorization: Bearer wso_live_..." \
"https://api.wheelstrategyoptions.com/v1/chain/AAPL?minDte=20&maxDte=45&deltaMin=0.4&deltaMax=0.6&side=call&limit=3"{
"asOf": "2026-10-10T00:15:45.210579Z",
"contracts": [
{
"optionSymbol": "AAPL261030C00335000",
"underlying": "AAPL",
"expiration": "2026-10-30",
"strike": 335,
"side": "call",
"bid": 8.3,
"ask": 8.95,
"mid": 8.625,
"last": 8.4,
"volume": 2051,
"openInterest": 2994,
"iv": 22.37,
"delta": 0.541914,
"gamma": 0.020662,
"theta": -0.181262,
"vega": 0.320195,
"rho": 0.100074,
"underlyingPrice": 336.08,
"spreadPercent": 7.54,
"dte": 21,
"asOf": "2026-10-10T00:15:45.210579Z"
},
{
"optionSymbol": "AAPL261030C00340000",
"underlying": "AAPL",
"expiration": "2026-10-30",
"strike": 340,
"side": "call",
"bid": 5.75,
"ask": 6.2,
"mid": 5.975,
"last": 5.9,
"volume": 2018,
"openInterest": 2424,
"iv": 22.18,
"delta": 0.436556,
"gamma": 0.021035,
"theta": -0.175494,
"vega": 0.317894,
"rho": 0.081131,
"underlyingPrice": 336.08,
"spreadPercent": 7.53,
"dte": 21,
"asOf": "2026-10-10T00:15:45.210579Z"
},
{
"optionSymbol": "AAPL261106C00335000",
"underlying": "AAPL",
"expiration": "2026-11-06",
"strike": 335,
"side": "call",
"bid": 11.15,
"ask": 11.45,
"mid": 11.3,
"last": 11.65,
"volume": 1463,
"openInterest": 558,
"iv": 27.92,
"delta": 0.53784,
"gamma": 0.015005,
"theta": -0.187297,
"vega": 0.370385,
"rho": 0.130362,
"underlyingPrice": 336.08,
"spreadPercent": 2.65,
"dte": 28,
"asOf": "2026-10-10T00:15:45.210579Z"
}
],
"symbol": "AAPL",
"truncated": true,
"underlyingPrice": 336.08
}What you can build
Endpoints designed for screening options contracts, gamma exposure heatmaps, flow, IV rank, and corporate calendars.
Option Screener
Filter option contracts across delta, DTE, premium yield, and strike distance.
GEX Heatmap
Get strike-by-expiration dealer gamma exposure grids for heatmaps for any underlying.
Option Flow
Inspect trade prints filtered by premium and sentiment, sortable by premium or time.
Get IV Rank
Screen equities by 52-week IV Rank and inspect single-stock IV high/low context.
Earnings Calendar
Query upcoming (and the last few days of) earnings dates to time entries around event risk.
Dividend Calendar
Look up ex-dividend and payment dates to avoid early assignment and yield surprises.
API Catalogue
Explore every real endpoint family documented with OpenAPI 3.1 specifications.
Authentication
- GET/v1/auth/verify
- GET/v1/usage
Options Chains & Quotes
- GET/v1/quotes/{symbol}
- GET/v1/options/quotes/{optionSymbol}
- GET/v1/options/quotes
- GET/v1/expirations/{symbol}
- +1 more endpoints
Option Screener
- POST/v1/contracts/screen
Corporate Calendars
- GET/v1/earnings
- GET/v1/dividends
Implied Volatility
- GET/v1/iv/{symbol}
- GET/v1/stocks/top-iv
- GET/v1/stocks/top-ivr
Gamma Exposure (GEX)
- GET/v1/gex/{symbol}
- GET/v1/gex/{symbol}/heatmap
Options Flow Tape
- GET/v1/flow
- GET/v1/flow/net
Simple, transparent pricing
One straightforward plan with generous limits and full endpoint access.
Free trial
No credit card required
- 300 requests / minute
- 5 concurrent requests
- 250 max rows per request
- 7 days history window
- All endpoints included
Basic
Limited-time offer: first 3 months, then $99/month
or $79/mo billed yearly
- 300 requests / min
- 5 concurrent requests
- 250 max rows per request
- 7 days history window
- All endpoints included
Need higher limits, more access or enterprise support? Contact us to discuss your use case
Frequently Asked Questions
Clear, truthful answers to common technical and account questions.
Do I need a WheelStrategyOptions account?
Yes. You sign in to the API dashboard with your existing WheelStrategyOptions account via single sign-on (SSO).
How does the free trial work?
Start it from the dashboard: 14 days of full API access, no credit card required, once per account. When it ends, data endpoints return HTTP 403 (trial_ended) until you subscribe; your API keys stay listed in the dashboard.
How fresh is the data?
Most market-data responses include timestamps (for example asOf or lastUpdatedDate) so you can see how current each record is.
What happens when I hit a limit?
If you exceed your per-minute rate limit or concurrency ceiling, the API returns HTTP 429 with a Retry-After header.
Can I cancel anytime?
Yes. You can manage or cancel your subscription at any time directly in the dashboard.
Where is the API reference documentation?
Complete documentation for every endpoint, parameter schema, error code, and code sample is available at /docs.