Crypto Price & Market Analysis MCP Server

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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.

Sign up and get your API key at pro.coincap.io/dashboard
Add the key to your MCP client configuration:

STDIO: via the COINCAP_API_KEY environment variable (see Usage examples above)
HTTP: via the COINCAP_API_KEY query parameter in the connection URL (e.g. /mcp?COINCAP_API_KEY=your_key)

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:

| Prompt | Args | Description | |--------|------|-------------| | analyze-crypto | symbol | Comprehensive analysis: price, market, historical trends | | compare-cryptocurrencies | symbols | Compare 2-5 cryptos side-by-side | | market-overview | — | Global market snapshot: metrics, top assets, top exchanges | | crypto-conversion | symbol, amount?, currency? | Convert crypto amount to fiat | | exchange-analysis | symbol | Exchange landscape analysis for a crypto | | technical-analysis | symbol | Full technical analysis: indicators, candles, trends | | crypto-screener | query | Search and screen cryptos for opportunities |

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

mcp-crypto-price