Twelve Data MCP server

Twelve Data MCP Server

Connect Claude, ChatGPT, and other AI assistants to the Twelve Data financial API — real-time and historical prices, 60+ technical indicators, fundamentals, earnings, dividends, ETFs, company news, market movers, and more.

You need a Twelve Data account. Sign up at twelvedata.com.

There are two ways to use it. Most people should use the cloud server (Option 1) — there is nothing to install.

Option 1 — Use our cloud server (recommended)

Connect your AI assistant to our hosted server:

https://mcp.twelvedata.com/mcp

That's it. No installation, no API key to copy and paste. When you connect, a browser window opens and you log in with your Twelve Data account — your personal API key is linked automatically and stays tied to your account.

How to add it

Claude (Desktop / Web) and ChatGPT support custom connectors / MCP servers:

1. Open your assistant's Connectors (or Integrations / MCP servers) settings.
2. Add a new connector with the URL https://mcp.twelvedata.com/mcp.
3. When prompted, click Connect / Log in — a Twelve Data login page opens in your browser.
4. Authorize, and you're done. Ask things like "What's the RSI for AAPL?" or "Show me TSLA's latest earnings."

The exact menu names differ between apps and versions, but the flow is always the same: add the URL, then log in via the browser popup.

Option 2 — Run it locally with your API key

Prefer to run the server on your own machine (e.g. for Claude Desktop over stdio)? You only need your Twelve Data API key — no OAuth setup.

1. Get your API key

Log in at twelvedata.com → your dashboard → API Keys. Copy your key.

2. Install

Requires Python 3.10+ (3.12 recommended; on macOS brew install python@3.12 or make python-install).

make install

3. Add your API key

Create a .env file in the project root with your key:

TWELVE_DATA_API_KEY=your_api_key_here

4. Connect to Claude Desktop

Add to ~/Library/Application Support/Claude/claudedesktopconfig.json:

{
  "mcpServers": {
    "twelvedata": {
      "command": "/path/to/twelve-data-mcp/.venv/bin/python",
      "args": ["/path/to/twelve-data-mcp/src/server.py"]
    }
  }
}

Use the .venv/bin/python path (not the system Python — macOS ships 3.9, and this server needs 3.10+). Restart Claude Desktop after editing the config.

That's all — the server reads your API key from .env and every request uses it. No login step needed.

What you can ask

• Prices — stocks, ETFs, forex, crypto, commodities (real-time & historical)
• Technical indicators — RSI, MACD, SMA, BBANDS, ATR, and 60+ more
• Fundamentals — financial statements, earnings, dividends, splits, company profiles, market cap, key stats, IPO calendar
• Funds — ETF & mutual fund profiles, performance, holdings, risk
• News — company news & press releases
• Market intelligence — movers, exchange rates, analyst ratings, price targets
• Regulatory — SEC/EDGAR filings, insider transactions, institutional holdings

Symbol formats: stocks AAPL, crypto BTC/USD, forex EUR/USD.

Partners

Running your own public instance or setting up a dedicated OAuth login? That's a partner arrangement — reach out to us at twelvedata.com and we'll provide the setup guide and OAuth credentials.