Market Data MCP puts the full power of MarketXLS inside Claude and ChatGPT.
Market Data MCP is a MarketXLS connector that lets Claude, ChatGPT, and other MCP clients pull stock quotes, option chains with Greeks, fundamentals, screens, and your MarketXLS portfolio as structured data. Add the endpoint in your AI app and sign in with your MarketXLS account. It is included with every MarketXLS plan: Advanced and Business give real-time quotes and options; Standard gives 15-minute delayed stock quotes and end-of-day options.
It comes with MarketXLS, no separate purchase. See plans here.
ChatGPT
Claude
Gemini
Cursor+ any MCP client
Your AI can find a number. Can you trust it?
A scraped price has no source, no license, and no guarantee it's current. You can't put it in a client report or behind a trade. MarketXLS grounds your AI in data you can stand behind.
| What matters | A web scrape | MarketXLS data |
|---|---|---|
| Where the number comes from | Some webpage it happened to find | ✓A licensed consolidated feed (QuoteMedia) |
| Real-time option chains | Partial, stale, or missing | ✓Full chains, every strike, live Greeks |
| How current it is | Whenever that page last updated | ✓Real-time on Advanced & Business |
| Consistency | Changes from query to query | ✓The same feed as your Excel, every time |
| Can you stand behind it? | Not really | ✓Yes. Licensed data with a named source |
Refining our market-data pipelines since 2017
With every MarketXLS plan, no separate purchase
QuoteMedia consolidated feed, never a scrape
Built for investment professionals and pro options traders.
Options is the spearhead. Behind it, your AI gets the full market-data layer your desk already relies on: quotes, fundamentals, screening, and your own portfolio.
Trade options with a real chain
Ask about an options trade and get the chain back: every strike, Greeks, IV, and open interest. Real-time on the Advanced and Business plans.
- ✓Full real-time chains
- ✓Per-strike Greeks & IV
- ✓Open-interest shifts
Price your book by just asking
Connect your MarketXLS portfolio and value it at the current tick. See what moved today and attribute returns year-to-date, in plain language.
- ✓Live NAV & P&L
- ✓Winners / losers
- ✓YTD attribution
Screen the whole market in chat
Run a screen across the full US equity universe on licensed fundamentals, and get a clean table back you can drop straight into your model.
- ✓US equities universe
- ✓Trailing + forward data
- ✓Model-ready output
The kinds of questions your AI can answer with real data.
Click one to see an example request and the kind of table that comes back. Values shown are illustrative.
The thing your AI cannot get on its own. Pulls the full chain with per-strike Greeks, implied vol, and the 1-day open-interest shift, straight from the live feed.
| Strike | Bid | Ask | IV | Delta | OI Δ 1D |
|---|---|---|---|---|---|
| 230 C | 9.85 | 9.95 | 58.2% | 0.61 | +2,140 |
| 240 C | 6.40 | 6.55 | 60.1% | 0.52 | +8,420 |
| 250 C | 4.15 | 4.28 | 62.3% | 0.43 | +14,680 |
| 260 C | 2.62 | 2.72 | 64.8% | 0.34 | +3,110 |
You don't buy this separately. It comes with MarketXLS.
Subscribe to a MarketXLS plan and connect your AI, and that's the whole deal. Trading options? You need real-time, so pick Advanced.
Standard
For exploring and research. Billed annually.
- ✓15-min delayed quotes, end-of-day option chains
- ✓Full fundamentals & screening
- ✓Works with any AI client
Advanced
★ Most popularFor active options traders. Billed annually.
- ✓Real-time quotes & option chains
- ✓Live Greeks, IV & open interest
- ✓Full fundamentals & screening
- ✓Works with any AI client
Business
For real-time forex and index data too. Billed annually.
- ✓Everything in Advanced
- ✓Real-time forex quotes
- ✓Real-time index data
All plans include the AI connection. Real-time options data requires Advanced or Business.
How to connect Market Data MCP in three steps
Paste the endpoint
Open your AI’s connector settings and add our URL.
connect.mcp.marketxls.com/mcpSign in once
Your MarketXLS account. OAuth handles it, no API keys to juggle.
✓ Authorized · scoped to your seatAsk anything
Your AI figures out what to call. You just talk.
"Pull the live AAPL call chain."Market Data MCP FAQ
Can ChatGPT or Claude get real-time options data?+
Not on their own. A general AI can web-search a stock price, but it cannot pull a complete option chain as structured data. With Market Data MCP connected, Claude or ChatGPT can request full chains with Greeks, implied volatility, and open interest. The data is real-time on the Advanced and Business plans.
Is the data real-time or delayed?+
It depends on your plan. Advanced and Business serve real-time stock quotes and options data. Standard serves 15-minute delayed stock quotes and end-of-day options data, which suits research but not active options trading.
Which AI apps does this work with?+
Any MCP client. Claude (desktop & web), ChatGPT, Cursor, Windsurf, and the rest. One endpoint URL, paste it once, and you are connected.
Where does the market data come from?+
Quotes and options data come from QuoteMedia under license. Historical and fundamental data come from multiple sources, cleaned and served through the MarketXLS API. It is the same data behind the MarketXLS Excel add-in, not a web scrape.
Do I need a MarketXLS subscription?+
Yes. Market Data MCP is included with every MarketXLS plan, so there is no separate product to buy. US plans are Standard ($70/month billed annually), Advanced ($125/month), and Business ($200/month).
Can my AI place trades through it?+
No. It reads market data only. It does not execute orders. Execution sits behind different licenses.
Give your AI numbers you can stand behind.
Option chains, quotes, fundamentals, and your portfolio from the same licensed data service as the MarketXLS Excel add-in. Real-time on the Advanced and Business plans.