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Unusual Whales MCP Server

Unusual Whales MCP Server

by phields

Unusual Whales MCP Server

npm version License: MIT

A Model Context Protocol (MCP) server that provides access to the Unusual Whales API for financial data, options flow analysis, and market intelligence.

Features

  • šŸš€ Fast and lightweight - Direct API access without heavy dependencies

  • šŸ“Š Comprehensive data - 33 tools covering 12 financial data categories

  • šŸ”„ Real-time insights - Options flow alerts, market sentiment, and live data

  • šŸ›ļø Congressional tracking - Monitor politician trading activity

  • 🌊 Dark pool analysis - Track institutional block trades

  • šŸ“ˆ Market intelligence - ETF flows, earnings data, and volatility metrics

Related MCP server: xoomar-mcp

Requirements

  • Node.js 18+

  • Valid Unusual Whales API key

  • Compatible with Claude Desktop, VS Code, and other MCP clients

Installation

The server is available as an npm package and can be installed in multiple ways:

Quick Start

npx unusualwhales-mcp

Global Installation

npm install -g unusualwhales-mcp

Local Installation

npm install unusualwhales-mcp

Configuration

Environment Setup

  1. Obtain an API key from Unusual Whales

  2. Set the environment variable:

export UNUSUAL_WHALES_API_KEY=your_api_key_here

Or create a .env file:

UNUSUAL_WHALES_API_KEY=your_api_key_here

MCP Client Configuration

Claude Desktop

Add to your Claude Desktop configuration file:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "unusualwhales": {
      "command": "npx",
      "args": ["unusualwhales-mcp"],
      "env": {
        "UNUSUAL_WHALES_API_KEY": "your_api_key_here"
      }
    }
  }
}

VS Code (via MCP extension)

{
  "mcpServers": {
    "unusualwhales": {
      "command": "npx",
      "args": ["unusualwhales-mcp"]
    }
  }
}

Other MCP Clients

The server works with any MCP-compatible client. Use the command:

npx unusualwhales-mcp

Available Tools

šŸ“Š Stock Analysis

  • get_stock_info - Get comprehensive stock information

  • get_stock_flow_alerts - Get options flow alerts for a ticker

  • get_stock_flow_recent - Get recent options flows

  • get_stock_option_chains - Get option chains data

  • get_stock_greek_exposure - Get Greeks exposure analysis

  • get_stock_max_pain - Get max pain calculations

  • get_stock_iv_rank - Get IV rank percentiles

  • get_stock_volatility_stats - Get volatility statistics

🌊 Market Data

  • get_market_tide - Get overall market sentiment indicator

  • get_market_economic_calendar - Get economic events calendar

  • get_market_fda_calendar - Get FDA calendar events

  • get_market_spike - Get SPIKE volatility indicator

  • get_market_total_options_volume - Get market-wide options volume

šŸ›ļø Congressional & Insider Trading

  • get_congress_trader - Get congress member trading data

  • get_congress_late_reports - Get late filing reports

  • get_congress_recent_trades - Get recent congressional trades

šŸŒ‘ Dark Pool Analysis

  • get_darkpool_recent - Get recent dark pool prints

  • get_darkpool_ticker - Get dark pool data for specific ticker

šŸ“ˆ ETF Analysis

  • get_etf_exposure - Get ETF sector/geographic exposure

  • get_etf_holdings - Get ETF holdings breakdown

  • get_etf_in_outflow - Get ETF flow data

  • get_etf_info - Get ETF information

  • get_etf_weights - Get ETF sector weights

šŸ“… Earnings & Events

  • get_earnings_afterhours - Get after-hours earnings

  • get_earnings_premarket - Get pre-market earnings

  • get_earnings_ticker - Get historical earnings for ticker

šŸ”” Alerts & Screening

  • get_alerts - Get triggered user alerts

  • get_alerts_configuration - Get alert configurations

  • get_option_trades_flow_alerts - Get options flow alerts

  • get_screener_analysts - Get analyst ratings screener

  • get_screener_option_contracts - Get hottest chains screener

  • get_screener_stocks - Get stock screener results

šŸ“° News

  • get_news_headlines - Get financial news headlines

Usage Examples

Basic Stock Analysis

// Get recent options flows for AAPL
const flows = await server.callTool("get_stock_flow_recent", { 
  ticker: "AAPL" 
});

// Get comprehensive stock info
const info = await server.callTool("get_stock_info", { 
  ticker: "TSLA" 
});

Market Sentiment

// Get overall market sentiment
const tide = await server.callTool("get_market_tide", {});

// Get volatility spike indicator
const spike = await server.callTool("get_market_spike", {});

Congressional Trading

// Get recent congressional trades for NVDA
const congressTrades = await server.callTool("get_congress_recent_trades", { 
  ticker: "NVDA" 
});

// Get trades by specific congress member
const memberTrades = await server.callTool("get_congress_trader", { 
  name: "Nancy Pelosi" 
});

Dark Pool Activity

// Get recent dark pool activity
const darkPool = await server.callTool("get_darkpool_recent", { 
  limit: 50 
});

// Get dark pool data for specific ticker
const tickerDarkPool = await server.callTool("get_darkpool_ticker", { 
  ticker: "SPY" 
});

Using as a Package in Node.js Projects

This package can be imported and used directly in your Node.js applications, including web frameworks like Hono, Express, or Fastify.

Installation as Dependency

npm install unusualwhales-mcp

Basic Usage

import { UnusualWhalesMcp } from 'unusualwhales-mcp';

// Create MCP server instance
const mcpServer = new UnusualWhalesMcp();

// Get the server instance for integration
const server = mcpServer.getServer();

// Start with different transport types
await mcpServer.start('stdio');  // For MCP clients
await mcpServer.start('sse', { endpoint: '/sse', response: res });  // For HTTP SSE
await mcpServer.start('streamableHttp');  // For HTTP streaming

Integration with Hono Web Framework

import { Hono } from 'hono';
import { cors } from 'hono/cors';
import { UnusualWhalesMcp } from 'unusualwhales-mcp';

const app = new Hono();
const mcpServer = new UnusualWhalesMcp();

// Enable CORS for MCP endpoints
app.use('/mcp/*', cors({
  origin: '*',
  allowHeaders: ['Content-Type'],
  allowMethods: ['GET', 'POST', 'OPTIONS'],
}));

// SSE endpoint for MCP over HTTP
app.get('/mcp/sse', async (c) => {
  const response = c.env?.response || c.res;
  
  // Start MCP server with SSE transport
  await mcpServer.start('sse', { 
    endpoint: '/mcp/sse', 
    response: response 
  });
  
  return c.json({ status: 'SSE endpoint ready' });
});

// Streamable HTTP endpoint
app.post('/mcp/message', async (c) => {
  try {
    // Create streamable HTTP transport
    const transport = mcpServer.createStreamableHTTPTransport({
      sessionIdGenerator: () => crypto.randomUUID()
    });
    
    // Handle MCP message
    const body = await c.req.json();
    
    return c.json({ 
      status: 'message processed',
      sessionId: transport.sessionId 
    });
  } catch (error) {
    console.error('MCP endpoint error:', error);
    return c.json({ error: 'Internal server error' }, 500);
  }
});

// Direct API endpoints (bypassing MCP)
app.get('/api/stock/:ticker', async (c) => {
  try {
    const ticker = c.req.param('ticker');
    const server = mcpServer.getServer();
    
    // Call tool directly
    const result = await server.callTool('get_stock_info', { ticker });
    
    return c.json(result);
  } catch (error) {
    return c.json({ error: error.message }, 500);
  }
});

export default {
  port: 3000,
  fetch: app.fetch,
};

Environment Configuration

# Set your Unusual Whales API key
export UNUSUAL_WHALES_API_KEY=your_api_key_here

# Optional: Configure server settings
export MCP_SERVER_NAME=unusualwhales-mcp
export MCP_SERVER_VERSION=0.1.3

Advanced Usage with Custom Transport

import { UnusualWhalesMcp } from 'unusualwhales-mcp';
import { SSEServerTransport } from '@modelcontextprotocol/sdk/server/sse.js';

const mcpServer = new UnusualWhalesMcp();

// Create custom SSE transport
const customTransport = new SSEServerTransport('/custom-endpoint', response);

// Connect server with custom transport
await mcpServer.getServer().connect(customTransport);

// Or use the helper methods
const sseTransport = mcpServer.createSSETransport('/my-endpoint', response);
const httpTransport = mcpServer.createStreamableHTTPTransport({
  sessionIdGenerator: () => `session-${Date.now()}`
});

TypeScript Support

The package includes full TypeScript definitions:

import { UnusualWhalesMcp } from 'unusualwhales-mcp';
import type { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js';

const mcpServer: UnusualWhalesMcp = new UnusualWhalesMcp();
const server: McpServer = mcpServer.getServer();

// Full type safety for all API calls
const stockInfo = await server.callTool('get_stock_info', { 
  ticker: 'AAPL' 
});

API Coverage

The server provides access to 81 API endpoints across 12 categories:

Category

Endpoints

Description

Alerts

2

Custom alerts and configurations

Congress

3

Congressional trading data

Darkpool

2

Dark pool trading analysis

Earnings

3

Earnings calendars and data

ETFs

5

ETF analysis and holdings

Group Flow

2

Grouped options flow data

Insider

4

Insider trading information

Institutions

6

Institutional holdings and activity

Market

9

Market-wide data and indicators

Net Flow

1

Net options flow by expiry

News

1

Financial news headlines

Option Contract

4

Individual contract analysis

Option Trades

2

Options flow and alerts

Screeners

3

Stock and options screening tools

Seasonality

4

Seasonal market patterns

Shorts

5

Short interest and volume data

Stock

27

Comprehensive stock analysis

Development

Local Development

# Clone the repository
git clone https://github.com/your-username/unusualwhales-mcp.git
cd unusualwhales-mcp

# Install dependencies
npm install

# Set up environment
cp .env.example .env
# Edit .env with your API key

# Build the project
npm run build

# Run the server
npm start

Available Scripts

  • npm run build - Compile TypeScript and make executable

  • npm run watch - Watch for changes and recompile

  • npm run inspector - Launch MCP inspector for debugging

  • npm run prepare - Prepare package for publishing

Project Structure

unusualwhales-mcp/
ā”œā”€ā”€ src/
│   └── index.ts          # Main server implementation
ā”œā”€ā”€ build/                # Compiled JavaScript output
ā”œā”€ā”€ package.json          # Project configuration
ā”œā”€ā”€ tsconfig.json         # TypeScript configuration
template
└── README.md            # This file

Rate Limits

Please be aware of Unusual Whales API rate limits. The server includes:

  • 30-second timeout for requests

  • Proper error handling for rate limit responses

  • Retry logic for transient failures

License

This project is licensed under the MIT License - see the LICENSE file for details.

Disclaimer

āš ļø Important: This software is for educational and research purposes only. Always verify data independently before making trading decisions. The authors are not responsible for any financial losses incurred from using this software.

Support


Made with ā¤ļø for unusualwhales

Available Tools

33 tools
get_alertsC

Get triggered alerts for the user

Inputs: limit, page, intraday_only, config_ids, +2 more.

get_alerts_configurationB

Get alert configurations for the user

Inputs: no named parameters.

get_congress_late_reportsC

Get recent late reports by congress members

Inputs: limit, date, ticker.

get_congress_recent_tradesC

Get latest trades by congress members

Inputs: limit, date, ticker.

get_congress_traderC

Get recent reports by congress member

Inputs: limit, date, ticker, name.

get_darkpool_recentC

Get latest darkpool trades

Inputs: limit, date, min_premium, max_premium, +4 more.

get_darkpool_tickerC

Get darkpool trades for a specific ticker

Inputs: ticker (required), date, newer_than, older_than, +7 more.

get_earnings_afterhoursB

Get afterhours earnings for a date

Inputs: date, limit, page.

get_earnings_premarketC

Get premarket earnings for a date

Inputs: date, limit, page.

get_earnings_tickerC

Get historical earnings data for a ticker

Inputs: ticker (required).

get_etf_exposureC

Get ETF exposure data

Inputs: ticker (required).

get_etf_holdingsC

Get ETF holdings information

Inputs: ticker (required).

get_etf_infoC

Get ETF information

Inputs: ticker (required).

get_etf_in_outflowC

Get ETF inflow & outflow data

Inputs: ticker (required).

get_etf_weightsB

Get ETF sector & country weights

Inputs: ticker (required).

get_market_economic_calendarC

Get economic calendar events

Inputs: date, limit.

get_market_fda_calendarC

Get FDA calendar events

Inputs: date, limit.

get_market_spikeC

Get SPIKE data (volatility indicator)

Inputs: no named parameters.

get_market_tideC

Get market tide data

Inputs: no named parameters.

get_market_total_options_volumeB

Get total options volume across the market

Inputs: no named parameters.

get_news_headlinesC

Get latest news headlines for financial markets with filtering options

Inputs: limit, major_only, page, search_term, +1 more.

get_option_trades_flow_alertsC

Get option flow alerts showing significant option trades and unusual activity

Inputs: all_opening, is_ask_side, is_bid_side, is_call, +24 more.

get_screener_analystsC

Get analyst rating screener

Inputs: no named parameters.

get_screener_option_contractsC

Get hottest chains screener (option contracts)

Inputs: no named parameters.

get_screener_stocksD

Get stock screener

Inputs: no named parameters.

get_stock_flow_alertsC

Get flow alerts for a ticker

Inputs: ticker (required).

get_stock_flow_recentC

Get recent flows for a ticker

Inputs: ticker (required).

get_stock_greek_exposureC

Get Greek exposure for a ticker

Inputs: ticker (required).

get_stock_infoC

Get stock information for a ticker

Inputs: ticker (required).

get_stock_iv_rankC

Get IV rank for a ticker

Inputs: ticker (required).

get_stock_max_painC

Get max pain data for a ticker

Inputs: ticker (required).

get_stock_option_chainsC

Get option chains for a ticker

Inputs: ticker (required).

get_stock_volatility_statsC

Get volatility statistics for a ticker

Inputs: ticker (required).

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

Loading tool schema changelog…

    TDQS

    C2.9/5.0

    Scored across 33 tools

    Disambiguation4/5

    Most tools have distinct purposes targeting specific financial data categories (congress trades, dark pools, earnings, ETFs, market indicators, news, screeners, stock/option analytics). Some potential overlap exists between flow-related tools (e.g., get_stock_flow_alerts vs get_stock_flow_recent) and ETF tools, but descriptions generally clarify the differences.

    Naming Consistency5/5

    All tools follow a consistent 'get_[category]_[specific]' snake_case pattern, with clear and predictable naming. The structure is uniform across all 33 tools, making it easy to understand the domain and action at a glance.

    Tool Count2/5

    33 tools is excessive for a single server, likely overwhelming for agents and suggesting poor scoping. While the domain (financial data) is broad, this many tools indicates fragmentation rather than a cohesive set, making it difficult to navigate and use effectively.

    Completeness5/5

    The tool set comprehensively covers the financial data domain implied by the server name and tool descriptions. It includes data on alerts, congress trades, dark pools, earnings, ETFs, market indicators, news, screeners, and detailed stock/option analytics, with no obvious gaps for the intended purpose.

    Maintenance

    ActivityInactive
    ResponsivenessNo recent community issues

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