Realtime Crypto (CoinCap)

realtime-crypto-mcp-server

A real-time cryptocurrency data provider for Model Context Protocol (MCP) servers. This package integrates with the CoinCap API to provide cryptocurrency exchange details and current rates.

Features

• Get detailed cryptocurrency exchange information (volumes, rankings, trading pairs)
• Fetch current cryptocurrency rates in USD
• Built-in rate limiting and retry mechanisms for API requests
• Fully typed with TypeScript
• Compatible with MCP server SDK

🚀 Quick Start

To get started, add this configuration to your MCP Client config json:

{
  "mcpServers": {
    "realtime-crypto": {
      "command": "npx",
      "args": ["realtime-crypto-mcp-server"]
    }
  }
}

Prerequisites

• Node.js 18+
• npx

Development

Install dependencies:

npm install

Build the server:

npm run build

Crypto Exchange & Rates Toolkit

This package provides tools to retrieve detailed information about cryptocurrency exchanges and current exchange rates for cryptocurrencies using the CoinCap API.

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API Reference

getExchangeDetailsTool

Get detailed information about cryptocurrency exchanges.

Input:

• exchange (string): Exchange ID (e.g., binance, coinbase, kraken)

Example Response: Exchange details for Binance:

Name: Binance
Rank: 1
Volume (USD): $14,789,244,354.70
% of Total Volume: 31.39%
Trading Pairs: 1078
Website: https://www.binance.com/
Last Updated: 4/5/2025, 12:34:56 PM

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getRatesTool

Get current exchange rates for cryptocurrencies.

Input:

• currency (string): Cryptocurrency ID (e.g., bitcoin, ethereum, litecoin)

Example Response: Current rate for bitcoin:

Symbol: BTC ₿ Type: crypto USD Rate: $82,821.30

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🧠 Data Source

This package uses data from the CoinCap API, a free cryptocurrency market data API that provides real-time pricing and market activity for over 1,000 cryptocurrencies.

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⏱️ Rate Limiting

The package includes built-in rate limiting and retry mechanisms to handle CoinCap API's rate limits.

• Maximum 3 retries for rate-limited requests
• Exponential backoff starting at 1 second

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📄 License

MIT

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👨‍💻 Author

Mohan Kumar

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🙏 Acknowledgements

• CoinCap API for providing cryptocurrency market data
• Model Context Protocol for the MCP server framework