Crypto MCP Server

A Model Context Protocol (MCP) server that provides cryptocurrency data using Binance public API as the primary source and CoinMarketCap (CMC) as a fallback.

Features

• Public Data Access: Fetches real-time prices from Binance public endpoints (no API key required)
• Robust Fallback: Automatically switches to CoinMarketCap if Binance fails or is rate-limited
• API Key Rotation: Supports multiple CoinMarketCap API keys to handle rate limits and credit usage
• Historical Data: Provides candlestick (kline) data from Binance with automatic pagination for large date ranges
• Token-Optimized: Returns data in compact array format to minimize LLM token usage

Available Tools

get_price

Get the current price of a cryptocurrency.

Parameters:

• symbol (string): Trading pair symbol (e.g., "BTCUSDT", "ETHUSDT")

Returns:

{
  "symbol": "BTCUSDT",
  "price": 90729.18,
  "priceChange": -208.7,
  "priceChangePercent": -0.229,
  "volume": 7619.95,
  "quoteVolume": 691347321.24,
  "high": 91247.16,
  "low": 90155.47,
  "source": "binance",
  "timestamp": 1764443782752
}

batch_prices

Get current prices for MULTIPLE cryptocurrencies in parallel.

Parameters:

• symbols (array of strings): Array of trading pair symbols (e.g., ["BTC", "ETH", "BNB"])

Returns:

{
  "id": "batch_crypto_prices",
  "title": "Cryptocurrency Prices",
  "count": 3,
  "quotes": [
    {
      "symbol": "BTCUSDT",
      "name": "BTC",
      "price": 90729.18,
      "change": -208.7,
      "changePercent": -0.229,
      "volume": 7619.95,
      "high": 91247.16,
      "low": 90155.47
    },
    // ... other quotes
  ]
}

get_history

Get historical candlestick (kline) data from Binance.

Parameters:

• symbol (string): Trading pair symbol (e.g., "BTCUSDT")
• interval (string): Time interval - 1m, 5m, 15m, 30m, 1h, 4h, 1d, 1w, etc.
• startTime (string/number, optional): Start time as ISO string or timestamp
• endTime (string/number, optional): End time as ISO string or timestamp (defaults to now)

Returns: Token-optimized array format

[
  [OpenTime, Open, High, Low, Close, Volume, CloseTime],
  [1701234567890, 43250.50, 43500.00, 43100.00, 43400.00, 1234.56, 1701238167890],
  // ... more candles
]

Installation

npm install
npm run build

Configuration

Environment Variables

Create a .env file in the project root:

# CoinMarketCap API Keys (Required for fallback)
# You can provide multiple keys separated by commas for rotation
COINMARKETCAP_API_KEYS=your_cmc_api_key_1,your_cmc_api_key_2

# Note: Binance API keys are NOT required
# This server uses Binance public endpoints

Get your free CoinMarketCap API key at: https://coinmarketcap.com/api/

MCP Client Configuration

To use this server with Claude Desktop, add to your MCP settings file:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "crypto-mcp": {
      "command": "node",
      "args": ["/absolute/path/to/crypto-mcp/build/index.js"]
    }
  }
}

Usage

Running the Server

npm start

The server communicates via stdio and will wait for MCP client connections.

Development Mode

npm run dev

Documentation

• API Reference - Detailed API documentation
• Architecture - System design and architecture
• Deployment Guide - Production deployment instructions

License

ISC