QuantData MCP Server

MCP server that gives AI agents (Claude Code, Claude Desktop, etc.) access to real-time and historical SPX 0DTE options market data from QuantData.

Available data: GEX/DEX/CEX/VEX exposure walls, net drift, max pain, IV rank, trade side statistics, open interest, net flow, contract statistics, and more.

Quick Start

1. Install

You need Python 3.11+ installed. Check with python3 --version.

• Mac: brew install python (or download from python.org)
• Windows: Download from python.org (check "Add to PATH" during install)

Then install the package:

# With pip
pip install git+https://github.com/zzulanas/quantdata-mcp.git

# With uv (faster)
uv pip install git+https://github.com/zzulanas/quantdata-mcp.git

Don't have uv? Install it with curl -LsSf https://astral.sh/uv/install.sh | sh (Mac/Linux) or irm https://astral.sh/uv/install.ps1 | iex (Windows). It's a faster alternative to pip.

2. Get Your Credentials

You need two values from your QuantData account. Open your browser:

1. Go to v3.quantdata.us and log in
2. Open DevTools (F12 or right-click → Inspect) → Network tab
3. Refresh the page
4. Click on any chart or page on QuantData — you'll see API requests appear
5. Click any request to core-lb-prod.quantdata.us, or filter by /api in the top
6. In the Request Headers, find and copy:
   • authorization — your auth token (starts with eyJ...)
   • x-instance-id — your instance ID (a UUID like xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx)

Should look like these:

3. Run Setup

quantdata-mcp setup \
  --auth-token "eyJhbGci..." \
  --instance-id "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"

This creates a dedicated page on your QuantData account with 11 data tools and saves your config to ~/.quantdata-mcp/config.json.

4. Add to Claude

Claude Code

Add to your project's .mcp.json (or global ~/.claude/mcp.json):

{
  "mcpServers": {
    "quantdata": {
      "command": "quantdata-mcp",
      "args": ["serve"]
    }
  }
}

Restart Claude Code. You should see quantdata in your MCP servers.

Claude Desktop

Add to your Claude Desktop config file:

• Mac: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "quantdata": {
      "command": "quantdata-mcp",
      "args": ["serve"]
    }
  }
}

Note: quantdata-mcp must be on your system PATH. If it's not found, use the full path:

which quantdata-mcp   # find the path

{ "command": "/Users/you/.local/bin/quantdata-mcp", "args": ["serve"] }

Or use uvx to run without worrying about PATH:

{
  "command": "uvx",
  "args": ["--from", "git+https://github.com/zzulanas/quantdata-mcp.git", "quantdata-mcp", "serve"]
}

Restart Claude Desktop. The QuantData tools will appear in your tool list.

Available Tools

Tool	Description
qd_get_market_snapshot	Full overview: GEX + DEX walls, drift, max pain, trade stats
qd_get_exposure_by_strike	GEX/DEX/CEX/VEX wall data (switchable greek type)
qd_get_net_drift	Cumulative call vs put premium flow
qd_get_trade_side_stats	Trade aggression: AA/A/M/B/BB breakdown for calls/puts
qd_get_max_pain	Max pain strike + distance from current price
qd_get_iv_rank	Implied volatility rank vs historical range
qd_get_net_flow	Call/put premium flow over time
qd_get_oi_by_strike	Open interest distribution with near-ATM filtering
qd_get_contract_statistics	Total premium, trade count, volume by call/put
qd_set_page_date	Switch to a historical date for analysis

Example Usage

Ask Claude things like:

• "What are the biggest GEX walls right now?"
• "Show me yesterday's DEX walls at 10:30 AM"
• "Pull up the trade side stats — are puts or calls more aggressive today?"
• "Compare the GEX profile at open vs close for last Thursday"

Historical Data

All tools support historical analysis. Use qd_set_page_date to switch to a past trading day, then call any tool:

> Set the date to 2026-03-26 and show me the GEX walls at 10:00 AM

> qd_set_page_date(date="2026-03-26")
> qd_get_exposure_by_strike(greek_type="GAMMA", time_minutes=600)

Time scrubbing: time_minutes = minutes from midnight (570 = 9:30 AM, 720 = 12:00 PM, 960 = 4:00 PM).

How It Works

QuantData doesn't have an official API. This server uses reverse-engineered REST endpoints from their web app. Each user has "tools" (chart widgets) on "pages" — the setup command creates a dedicated page with all 11 data types so the MCP server can query them.

Architecture:

Claude → MCP (stdio) → quantdata-mcp server → QuantData REST API

Your credentials and tool IDs are stored locally at ~/.quantdata-mcp/config.json.

Commands

quantdata-mcp setup --auth-token <TOKEN> --instance-id <ID>  # One-time setup
quantdata-mcp serve                                           # Start MCP server (used by Claude)

Requirements

• Python 3.11+
• Active QuantData subscription

Troubleshooting

"Config not found" error: Run quantdata-mcp setup first.

Auth errors (401): Your token expired. Get a new one from the Network tab and re-run setup. Your existing page and tools will be reused:

quantdata-mcp setup --auth-token "NEW_TOKEN" --instance-id "SAME_ID"

Empty data: Make sure you have an active QuantData subscription and the market was open on the date you're querying.

"No such file or directory" in Claude Desktop: Use the full path to quantdata-mcp (see step 4 above).

License

MIT