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Options data API · four products · one key

Options Data API
Realtime flow, historical SQL, option chains, and market structure

OPRA-licensed options data API for U.S. equities—four products, one key: WebSocket realtime (~10M trades/day), ClickHouse historical SQL (2.8B+ prints from 2025-02-18, ≥15 min delay), REST option chains, and Market Structure snapshots (GEX, walls, Max Pain).

14-day free trial
No credit card required
30-day money-back
Live
10M+
trades streaming today
US
US-hosted APIs
10M+
Trades / day
2.8B+
Trades stored
Low
Typical US REST latency
OPRA
Licensed feed

Works with your favorite languages

One options data API, four product APIs

Stream real-time options data, query history with SQL, pull full option chains, or read precomputed market structure. Same OPRA-licensed dataset and API key.

Real-time options data · WebSocket

Real-Time Options Data API

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

  • WebSocket at wss://ws.optiondata.io
  • 30+ fields with Greeks & sentiment when available
  • 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
  • Trade history from 2025-02-18 (≥15 min delay)
  • For backtests & research
Explore historical options data API
Option chain API · REST

Option Chain API

Option chain API in one POST: strikes and expirations with bid/ask, last, open interest, IV, and Greeks for the latest session or historical days from the chain archive.

  • Full or filtered chain in one POST
  • Strikes, expirations, OI, IV & Greeks
  • Latest session or days from 2026-02-20+
Explore the option chain API
Market structure API · REST

Market Structure API

Read one full-chain symbol snapshot with GEX by strike and expiration, Gamma Flip, call and put walls, Max Pain, IV context, flow, and symbol metadata.

  • GEX by strike and expiration
  • Gamma Flip, walls, and Max Pain
  • Snapshots from 2026-02-20+ · same Pro key
Explore the market structure 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 stream and chain snapshots when available.

Advanced Filtering

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

Clean JSON

Predictable JSON across every API, easy to parse.

Realtime aggregation modes

Realtime WebSocket: AGGREGATED for consolidated prints or RAW originals. Historical SQL is raw-only.

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, full option chains, and structural snapshots. Developers use it for scanners, backtests, alerts, and trading products without file dumps or scrapers.

OptionData is OPRA-licensed and ships four products on one key: WebSocket flow (~10M trades/day, 30+ fields with Greeks when available), historical ClickHouse SQL (2.8B+ trades from 2025-02-18, ≥15 min delay), REST option chains (sessions from 2026-02-20+), and precomputed Market Structure snapshots with GEX, levels, and IV context.

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 = '2025-02-18'
  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 four products.

50% OFF FIRST YEAR

Pro Plan

Everything included — real-time, historical SQL, option chains, and market structure.

$599299/month
First year with an eligible promotion code, then $599/monthRequest both codes together. Enter the invitation during qualification, then enter the promotion code on Billing after the trial starts.
  • Realtime WebSocket streaming (wss://) — live in session
  • 30+ fields with Greeks & sentiment when available
  • Realtime AGGREGATED or RAW modes
  • Historical SQL (ClickHouse) from 2025-02-18
  • Historical SQL: ≥15 min delay (OPRA-aligned)
  • Option Chain REST (sessions from 2026-02-20+)
  • Market Structure API included
  • 14-day free trial (SQL capped at 10 rows; not auto-extended)
  • 30-day money-back guarantee

Current defaults: HTTP ~60 requests / 60s per customer on each endpoint · WebSocket max 5 connections / token · paid SQL ~10,000 rows / response. The trial/paid rate table below is planned, not yet active.

HTTP API limits

Current default: about 60 requests per 60 seconds per customer on each HTTP endpoint, for both trial and paid users. This is best-effort protection, not a guaranteed global quota.

Planned limits — not yet active. No effective date has been announced; the current defaults remain in effect until enforcement is rolled out and announced.

Planned requests per customer, per endpoint
ProductTrialPaid Pro
Option Chain
20/minute
600/hour
60/minute
3,000/hour
Market Structure
30/minute
1,200/hour
60/minute
3,600/hour
Historical SQL
5/minute
100/hour
10/minute
300/hour

Once enabled, both the minute and hourly limits will apply per customer, separately for each endpoint, across all of that customer’s API keys and IP addresses. Reaching either limit will trigger rate limiting.

When rate limited, expect HTTP 429 with Retry-After. Wait for that delay before retrying and back off repeated retries.

Enterprise limits are contract-specific; contact Sales or Support for higher-volume access.

Realtime WebSocket is unchanged: up to 5 concurrent connections per token; HTTP quotas do not apply to streamed messages.

Read the API rate-limit policy

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

FAQ

Options data API FAQ

An options data API returns U.S. equity option market data over code. OptionData gives you four products under one key: WebSocket flow, ClickHouse SQL history, REST option chains, and precomputed market-structure snapshots.

Options data API product pages: API docs · Historical SQL docs · U.S. options historical data · U.S. options data API · Options flow API guide · Real-time options data · Historical options data · Option chain API · Market structure API · Options flow API · Unusual options activity · Blog

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

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