The Cheapest Real-Time Options API for Algo Traders — No Fluff, Just Data

Salomon — Sun, 05 Jul 2026 17:38:16 +0000

If you're building an algo trading system that touches US equity options, you've probably hit the same wall I did: data providers are either expensive, over-engineered, or both.

I got tired of paying for features I didn't need — tick history, alternative data, proprietary SDKs — when all I wanted was a clean REST endpoint that returned options chain data in plain JSON.

So I built market-option.com — a real-time US options data API designed specifically for developers and algo traders who want the data, not the platform.

What It Does

4 endpoints. That's it.

/chain — full options chain for any supported ticker
/contract — single contract by symbol
/contracts — bulk contract lookup
/contract-overview — Greeks, IV, open interest, volume in one call

All responses are plain JSON. No SDK required. No proprietary query language. Just HTTP GET requests and an API key.

Who It's Built For

If you're:

Running a Python bot that trades options automatically
Backtesting credit spread or iron condor strategies
Building a scanner for high-IV setups
Just experimenting with options data before committing to a $99/mo plan

...this is built for you.

The Coverage

Top 100 US underlyings. That covers roughly 95% of actual options volume — SPY, QQQ, AAPL, TSLA, NVDA, and the rest of the names algo traders actually trade.

No exotic tickers, no noise. Just the liquid names where the volume is.

The Pricing

$20/mo.

No tiers based on request volume, no enterprise gates, no annual commitment required to get the real price.

Compare that to:

Tradier: $99+/mo for options data
Polygon.io: options add-on costs more than most indie budgets
CBOE DataShop: enterprise pricing, not built for individual developers

Try It Free — No Credit Card

Free tier: 1,000 API credits/day, forever. Enough to build and test.

7-day Pro trial: full access, no credit card, no commitment. If it doesn't work for your use case, you walk away having paid nothing.

👉 market-option.com

Happy to answer questions about endpoints, rate limits, or what's on the roadmap. Drop a comment.

I Got Tired of Paying $99/mo for Options Data — So I Built My Own API tags: python, api, finance, showdev

Salomon — Sun, 21 Jun 2026 15:41:23 +0000

I build algorithmic trading bots as a side project. Nothing fancy — just small strategies that trade US equity options automatically.

The problem I kept running into wasn't the strategy logic. It was the data.

Every time I wanted to pull real-time options chains, Greeks, or IV, I had two options:

Pay $99+/mo to a data provider
Scrape something I probably shouldn't be scraping

Neither felt right for a hobbyist project. So I built Market-Options — a simple REST API for US equity options data at $20/mo.

What It Does

It's a plain REST API. No SDK, no special client library — just HTTP requests and JSON responses.

It covers four endpoints:

chain — full options chain for a given underlying
contract — data for a single contract
contracts — batch lookup across multiple contracts
contract-overview — Greeks, IV, expiration details

Coverage is the top 100 US equity underlyings, which accounts for roughly 95% of actual US options volume. If you're building a bot that trades SPY, QQQ, AAPL, TSLA, or anything in that tier — it's covered.

Why Only 100 Underlyings?

Because that's what most people actually trade.

When I looked at my own bots, and at what most retail algo traders focus on, the top 100 covers everything practical. Exotic underlyings with low volume are also harder to get real data on reliably — so rather than promise coverage I can't deliver, I focused on doing the core well.

A Simple Example

curl "https://api.market-option.com/chain?symbol=SPY&expiration=2025-01-17" \
  -H "Authorization: Bearer YOUR_API_KEY"

Response is clean JSON:

{
  "symbol": "SPY",
  "expiration": "2025-01-17",
  "options": [
    {
      "strike": 480,
      "type": "call",
      "bid": 3.45,
      "ask": 3.50,
      "iv": 0.182,
      "delta": 0.42,
      "gamma": 0.031,
      "theta": -0.18,
      "vega": 0.29
    }
  ]
}

No parsing headaches, no weird date formats.

Pricing

Free tier: 1,000 credits/day — enough to test and build
Pro: $20/mo, unlimited within fair use
Trial: New accounts get 7 days of Pro, no credit card required

Who It's For

Honestly, it's for people like me — developers who want to build something real with options data without a $99+/mo commitment before they've even proven the strategy works.

If you're building a bot, backtesting a strategy, or just exploring options pricing programmatically, give it a try.

market-option.com

Would love feedback — what endpoints or data points are missing that would make this useful for your use case?

DEV Community: Salomon

The Cheapest Real-Time Options API for Algo Traders — No Fluff, Just Data

What It Does

Who It's Built For

The Coverage

The Pricing

Try It Free — No Credit Card

I Got Tired of Paying $99/mo for Options Data — So I Built My Own API tags: python, api, finance, showdev

What It Does

Why Only 100 Underlyings?

A Simple Example

Pricing

Who It's For