Truss44 MCP Crypto Price

What truss44-mcp-crypto-price MCP server does

The truss44-mcp-crypto-price MCP server provides cryptocurrency data through the CoinCap v3 API. It covers current prices and 24-hour statistics, market-wide metrics, exchange rankings, fiat and cryptocurrency conversion rates, asset metadata, historical prices, and technical analysis.

Available tools include price-get, price-convert, market-analysis, market-global, market-rates, and market-exchanges. Asset-focused tools include assets-top, assets-search, assets-info, and assets-compare. Analysis tools cover historical data, SMA, EMA, RSI, MACD, VWAP, and OHLCV candlesticks.

The server also provides the info://server metadata resource and an asset://{symbol} resource template that returns JSON for an asset. MCP prompts include comprehensive crypto analysis, side-by-side comparisons, market overviews, conversions, exchange analysis, technical analysis, and crypto screening.

How it works

Requests are passed to CoinCap v3 using the configured API key. price-get returns a cryptocurrency's USD price, 24-hour change, volume, market capitalization, and rank. Other tools accept inputs such as a symbol, amount, currency, exchange ID, slug, result limit, time interval, or historical range.

The truss44-mcp-crypto-price MCP server supports STDIO for local MCP clients and Streamable HTTP for clients or deployments that connect through HTTP streaming. The HTTP server listens on port 3000 by default, and the port can be changed with PORT. HTTP clients can provide the CoinCap key in the MCP connection URL query string.

Historical analysis supports intervals from five minutes through one day and up to 30 days of data. Candlestick requests support intervals from five minutes through one day and one to 30 days of candles. Asset comparisons accept two to five cryptocurrencies.

Setup and configuration

Use Node.js 22.14 or later and obtain a CoinCap API key from the CoinCap dashboard. For a local STDIO setup, configure an MCP client to launch the package with npx and set COINCAP_API_KEY in the process environment:

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

On Windows, clients that require cmd.exe can launch npx through cmd /c. For HTTP operation, build the project and start its HTTP entry point, or use the development command. Supply the key as ?COINCAP_API_KEY=... on the /mcp URL. A missing or invalid key causes the tools to return an error explaining that authentication is required.

Tools and capabilities

• Retrieve current prices and 24-hour market statistics.
• Convert crypto amounts to fiat currencies using USD-based rates.
• Inspect global market capitalization, volume, Bitcoin dominance, gainers, and losers.
• Rank exchanges by volume or inspect one exchange.
• Search assets, list top assets, retrieve metadata, or compare two to five assets.
• Analyze historical prices, volatility, high and low ranges, and technical indicators.
• Retrieve configurable OHLCV candlestick data.

The truss44-mcp-crypto-price MCP server declares output schemas and structured content for its tools, supporting clients that use typed MCP responses.