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Options data API · three endpoints · one key

Options Data API
Real-time options data, historical SQL, and option chains

OPRA-licensed options data API for U.S. equities: WebSocket real-time options data (~10M trades/day), historical options data via ClickHouse SQL (2.8B+ prints), and a full option chain API with Greeks and IV. One API key.

14-day free trial
No credit card required
30-day money-back
Live
10M+
trades streaming today
99.9%
Uptime (30d)
10M+
Trades / day
2.8B+
Trades stored
~50ms
API response (US)
OPRA
Licensed feed

Works with your favorite languages

One options data API, three access modes

Stream real-time options data, query historical options data with SQL, or pull a full option chain on demand. Same OPRA-licensed dataset.

Real-time options data · WebSocket

Real-Time Options Data API

Stream real-time options data over WebSocket: every U.S. print with 30+ fields, Greeks, sentiment, and AGGREGATED or RAW modes for options flow scanners.

  • WebSocket at wss://ws.optiondata.io
  • 30+ fields with Greeks & sentiment
  • AGGREGATED or RAW modes
Explore real-time options data API
Historical options data · SQL

Historical Options Data API

Query historical options data with ClickHouse SQL over REST. Backtest the full tape without downloading bulk files.

  • ClickHouse SQL over REST
  • Data from Feb 2025+
  • For backtests & research
Explore historical options data API
Option chain API · REST

Option Chain API

Option chain API in one POST: every strike and expiration with bid/ask, last, open interest, IV, and Greeks for the latest session or any past day.

  • Whole chain in one POST
  • Strikes, expirations, OI, IV & Greeks
  • Latest session or any historical day
Explore the option chain API
Use case

Unusual options activity with the options data API

Combine real-time options data, the option chain API (Greeks and OI), and historical options data SQL to build scanners for large premium, short-dated activity, and custom alert rules.

Unusual options activity API guide
Live trade stream
Chain context
Historical backtests

Complete Greeks

Delta, Gamma, Theta, Vega, Rho & IV on every trade.

Advanced Filtering

Filter by symbol, premium, sentiment, expiry and more.

Clean JSON

Predictable JSON across every API, easy to parse.

Aggregation Modes

AGGREGATED for consolidated trades or RAW originals.

Glossary

What is an options data API?

An options data API is how you pull U.S. equity option market data in code: live trades, history, and full option chains. Developers use it for scanners, backtests, alerts, and trading products without file dumps or scrapers.

OptionData is OPRA-licensed and ships three access modes on one key: WebSocket flow (~10M trades/day, 30+ fields with Greeks), historical ClickHouse SQL (2.8B+ trades from Feb 2025+), and REST option chains with strikes, expirations, bid/ask, open interest, IV, and Greeks.

Use cases

Options data API for every workflow

Same licensed dataset, different jobs. Pick the path that matches your stack. Each page has concrete examples, not filler.

Unusual options activity scanners

Use the options data API to stream live prints, score large premium or short-dated clusters, and backtest rules with historical options data SQL.

Unusual options activity API workflow

Quant research & backtesting

Query 2.8B+ stored trades with historical options data SQL: Greeks, IV, premium, and contract metadata in one warehouse.

Options data API for quants

Fintech products & dashboards

Ship customer-facing options flow monitors and option chain views with one signed options data API key.

Options data API for fintech

Desk alerts & options flow

Options flow API filters by symbol, premium, sentiment, and expiry server-side so only matching trades hit your stack.

Options flow API
Comparisons

OptionData vs other options data APIs

Decision-stage buyers compare vendors before they subscribe. Each guide includes a clear “who this is for” line — a plain audience line.

OptionData vs Alpaca

Best fit if you need trade-level options prints with Greeks, not an equity-first brokerage API.

Read comparison

OptionData vs Intrinio

Best fit if you are comparing specialist options flow against a broad market-data platform.

Read comparison

OptionData vs Massive.com

Best fit if you care about high-throughput options tape for scanners more than multi-asset breadth.

Read comparison

Developer-first API design

Clean, intuitive APIs with SDKs for popular languages. Start in minutes.

  • WebSocket & REST APIs
    Real-time streaming or request-response
  • Multi-language SDKs
    Python, JavaScript, Go, and more
  • Direct SQL Access
    ClickHouse for complex analytical queries
realtime.ts
import WebSocket from 'ws';

const ws = new WebSocket(
  'wss://ws.optiondata.io?token=YOUR_API_KEY'
);

ws.on('message', (data) => {
  const trade = JSON.parse(data);
  console.log(
    trade.symbol,
    trade.delta,
    trade.sentiment
  );
});
query.sql
SELECT
  symbol,
  SUM(size * price * 100) AS total_premium,
  COUNT(*) AS trade_count
FROM RawOptionTrades
WHERE
  date = '2025-01-15'
  AND symbol = 'AAPL'
GROUP BY symbol
ORDER BY total_premium DESC
LIMIT 10;

Query historical data with SQL

Run custom SQL queries directly against our ClickHouse database. Useful for backtesting and analytics.

  • Standard SQL Syntax
    Familiar SELECT, WHERE, GROUP BY
  • ClickHouse Performance
    Blazing fast on millions of records
  • REST API Access
    POST SQL queries with your API key

Simple, transparent pricing

One plan, all three APIs.

50% OFF FIRST YEAR

Pro Plan

Everything included — real-time, historical SQL, and option chain.

$599299/month
First year, then $599/month* Contact sales for coupon codeCoupon required for $299/month first-year pricing.
  • Real-time WebSocket streaming (wss://)
  • 30+ fields with Greeks & sentiment
  • AGGREGATED or RAW modes
  • Historical SQL via ClickHouse, data from Feb 2025+
  • Option Chain REST API included
  • 15-min delayed (OPRA)
  • 14-day free trial (SQL capped at 10 rows during trial)
  • 30-day money-back guarantee

Need enterprise features or custom data feeds? Contact our sales team

FAQ

Options data API FAQ

Options data API FAQ

An options data API returns U.S. equity option market data over code: live trades, history, and option chains. OptionData gives you three APIs under one key: WebSocket flow, ClickHouse SQL history, and REST option chains. You do not need scrapers or file dumps.

Options data API product pages: Real-time options data · Historical options data · Option chain API · Options flow API · Unusual options activity · Blog

Ready to get started?

Start streaming and querying U.S. options data with one API key.

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