Crypto Price & Market Analysis MCP Server

A Model Context Protocol (MCP) server that provides comprehensive cryptocurrency analysis using the CoinCap API. This server offers real-time price data, market analysis, and historical trends through an easy-to-use interface. Supports both STDIO and Streamable HTTP transports.

Requirements

• Node.js 22.14+
• CoinCap API key via `COINCAP_API_KEY`

What's New

• BREAKING: CoinCap v2 API removed. Now uses v3 API exclusively. A `COINCAP_API_KEY` is required (free tier available at pro.coincap.io/dashboard)
• Streamable HTTP transport added (while keeping STDIO compatibility)
• Smithery CLI scripts to build and run the HTTP server
• 6 new tools: `assets-search`, `market-global`, `assets-compare`, `analysis-candlestick`, `price-convert`, `assets-info`
• Hierarchical tool naming: All tools organized into category-prefixed names (`price-*`, `market-*`, `assets-*`, `analysis-*`)
• Output schemas: All tools now declare `outputSchema` with `structuredContent` for type-safe responses
• MCP best practices: `isError` flag on validation errors, server description, and `asset://{symbol}` resource template

Usage

Add this configuration to your Claude Desktop config file:

• MacOS: `~/Library/Application Support/Claude/claude_desktop_config.json`
• Windows: `%APPDATA%/Claude/claude_desktop_config.json`

{
  "mcpServers": {
    "mcp-crypto-price": {
      "command": "npx",
      "args": ["-y", "mcp-crypto-price"],
      "env": {
        "COINCAP_API_KEY": "YOUR_API_KEY_HERE"
      }
    }
  }
}

If your MCP client requires launching via `cmd.exe` on Windows:

{
  "mcpServers": {
    "mcp-crypto-price": {
      "command": "cmd",
      "args": ["/c", "npx", "-y", "mcp-crypto-price"],
      "env": {
        "COINCAP_API_KEY": "YOUR_API_KEY_HERE"
      }
    }
  }
}

Development scripts

pnpm dev          # Development (HTTP server with hot reload via Smithery CLI)
pnpm build         # Compile TypeScript → dist/
pnpm format        # Format source files with Prettier
pnpm lint          # Check for lint errors (ESLint + typescript-eslint)
pnpm lint:fix      # Auto-fix lint errors
pnpm types:check   # TypeScript type-check without emitting files
pnpm test          # Run all tests with Vitest
pnpm test:coverage # Run tests with coverage report (Vitest)
pnpm inspector     # Open MCP inspector for interactive debugging

Run as Streamable HTTP server

You can run the server over HTTP for environments that support MCP over HTTP streaming.

• Dev server (recommended during development):

pnpm dev

• Build and run the HTTP server:

# Build (outputs to dist/)
pnpm build

# Start the HTTP server
pnpm start:http

• Build and run the STDIO server:

# Build (outputs to dist/)
pnpm build

# Start the STDIO server
pnpm start:stdio

The server listens on port 3000 by default (override with `PORT`). For clients that connect over HTTP (e.g. Smithery, Claude.ai), pass your API key as a query parameter:

http://localhost:3000/mcp?COINCAP_API_KEY=YOUR_API_KEY_HERE

For remote deployments:

https://mcp-crypto-price.codemonkeyinnovations.com/mcp?COINCAP_API_KEY=YOUR_API_KEY_HERE

Required: CoinCap API Key

This server uses the CoinCap v3 API, which requires an API key. A free tier is available.

1. Sign up and get your API key at pro.coincap.io/dashboard

2. Add the key to your MCP client configuration:

Without a valid API key, all tools will return an error with instructions on how to obtain one.

Note for Smithery CLI users

This MCP server works directly via `pnpm dlx` (configs above) and does not require Smithery.

If you do use the Smithery CLI, authenticate with `smithery auth login` or by setting `SMITHERY_API_KEY` in your environment. Recent versions of the Smithery CLI do not support passing API keys via `--key` (or older `--profile` patterns).

Launch Claude Desktop to start using the crypto analysis tools.

Tools

price-get

Gets current price and 24h stats for any cryptocurrency, including:

• Current price in USD
• 24-hour price change
• Trading volume
• Market cap
• Market rank

price-convert

Converts a cryptocurrency amount into any fiat currency:

• Uses real-time price data and USD-based exchange rates
• Parameters: `symbol` (e.g. `BTC`), `amount` (default 1), `currency` (default `usd`)
• Example: 2.5 BTC in EUR

market-analysis

Provides detailed market analysis including:

• Top 5 exchanges by volume
• Price variations across exchanges
• Volume distribution analysis
• VWAP (Volume Weighted Average Price)

market-global

Provides an overview of the entire cryptocurrency market:

• Total market capitalization across all assets
• 24-hour trading volume
• Number of active cryptocurrencies
• Bitcoin dominance percentage
• Top gainers and losers

market-rates

Returns USD-based conversion rates for fiat currencies and cryptocurrencies:

• All fiat currency rates (USD base)
• Top 10 cryptocurrency rates
• Optional `slug` parameter (e.g. `euro`, `bitcoin`) for a single rate lookup

market-exchanges

Lists top cryptocurrency exchanges ranked by 24h volume:

• Exchange name, rank, and 24h volume in USD
• Number of trading pairs and market share percentage
• Optional `exchangeId` parameter (e.g. `binance`) for single exchange details
• Optional `limit` parameter (1–50, default 10)

assets-top

Lists top cryptocurrencies ranked by market cap, including:

• Current price in USD
• 24-hour price change
• Market cap and rank
• Configurable result count (1–50, default 10)

assets-search

Searches for cryptocurrencies by name or symbol with fuzzy matching:

• Returns matching assets with symbol, name, price, and rank
• Configurable result count (1–50, default 10)
• Example: search "bit" returns Bitcoin, Bitcoin Cash, BitTorrent, etc.

assets-info

Returns detailed metadata for a single cryptocurrency:

• ID, rank, symbol, and name
• Price, 24h change, market cap, and volume
• Circulating supply and max supply
• VWAP (24h)

assets-compare

Compares 2–5 cryptocurrencies side by side:

• Price, 24h change, market cap, volume, and rank for each asset
• Comma-separated symbols (e.g. `BTC,ETH,SOL`)
• Highlights best performer by 24h change

analysis-historical

Analyzes historical price data with:

• Customizable time intervals (5min to 1 day)
• Support for up to 30 days of historical data
• Price trend analysis
• Volatility metrics
• High/low price ranges

analysis-technical

Returns the latest technical indicators for any cryptocurrency:

• SMA (Simple Moving Average) with period
• EMA (Exponential Moving Average) with period
• RSI (Relative Strength Index) with Overbought/Oversold/Neutral signal
• MACD with signal line, histogram, and Bullish/Bearish label
• VWAP (Volume Weighted Average Price, 24h)

analysis-candlestick

Retrieves OHLCV candlestick data for a cryptocurrency:

• Open, high, low, close, and volume for each candle
• Configurable interval (`5m`, `15m`, `30m`, `1h`, `2h`, `6h`, `12h`, `1d`)
• Supports 1–30 days of historical candles

Resources

The server exposes the following MCP resources:

• `info://server` — Server name and version metadata
• `asset://{symbol}` — Cryptocurrency asset information by symbol (e.g. `asset://BTC`), returned as JSON

Prompts

The server exposes the following MCP prompts that clients can invoke:

Sample Prompts

• "What's the current price of Bitcoin?"
• "Show me market analysis for ETH"
• "Give me the 7-day price history for DOGE"
• "What are the top exchanges trading BTC?"
• "Show me the price trends for SOL with 1-hour intervals"
• "What are the technical indicators for ETH right now?"
• "What's the current EUR to USD exchange rate?"
• "Which crypto exchanges have the highest 24h volume?"
• "Search for cryptocurrencies matching 'sol'"
• "Give me a global overview of the crypto market"
• "Compare BTC, ETH, and SOL side by side"
• "Show me 1-hour candlestick data for BTC over the last 3 days"
• "Convert 2.5 BTC to EUR"
• "Get detailed info about the Ethereum asset"
• "Generate a comprehensive analysis of a cryptocurrency covering price, market, and historical trends"
• "Find all cryptocurrencies with 'bit' in their name and show me their current prices"
• "What's the market cap ranking and circulating supply of Cardano?"
• "Compare the top 3 stablecoins and show which has the highest volume"
• "Show me how Bitcoin has performed over the past 30 days with daily candles"
• "Convert 100 SOL to GBP and show the exchange rate"
• "Give me a full market snapshot: global metrics, top gainers, and BTC dominance"
• "What are the best and worst performing cryptos in the last 24 hours?"
• "Show me 15-minute candlestick data for ETH over the last 2 days"
• "Compare DeFi tokens: UNI, AAVE, COMP, and MKR"
• "What's the VWAP and max supply of Bitcoin?"
• "Search for layer-2 tokens and compare the top results"

License

This project is licensed under the MIT License