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Coincap MCP

Coincap MCP

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github.com/QuantGeekDevFinance92Updated 91w ago
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About Coincap MCP

Coincap MCP is an MCP server that queries cryptocurrency data from the public CoinCap API, with no API key or registration required. It is aimed at users who want price and market cap lookups inside Claude Desktop, and it also serves as a simple example of tool implementation.

Key features

  1. 01Bitcoin price lookup
  2. 02Price lookup for any supported cryptocurrency
  3. 03Listing of all assets available in CoinCap
  4. 04No API key or registration required

Use cases

  1. 01Asking Claude Desktop for the current price of bitcoin
  2. 02Checking the market cap of ethereum
  3. 03Browsing the crypto assets supported by CoinCap

MCP support

The project is an MCP server that provides price and asset list tools to MCP clients such as Claude Desktop.

Configuration

Local server config is the same for every client. Copy it into your client’s MCP config file.

mcp.json · Universal config
{
  "mcpServers": {
    "coincap": {
      "command": "npx",
      "args": [
        "-y",
        "@smithery/cli"
      ]
    }
  }
}
Run commandnpx -y @smithery/cli

Local servers need a runtime on your machine (e.g. Node.js 18+). Config file locations differ by client; see your client’s docs.

Packages
npm@smithery/cli

Tools

No tool list yet

Local servers expose tools only once running on your machine, and the maintainer has not provided a tool list.

Details

From the project README

Coincap MCP

smithery badge

What does this server do?

Allows you to query crypto information from coincap's public API - no API keys or registration required

🚀 Quick Start

To get started, 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": {
    "mongodb": {
      "command": "npx",
      "args": ["coincap-mcp"]
    }
  }
}
Installing via Smithery

To install Coincap for Claude Desktop automatically via Smithery:

npx -y @smithery/cli install coincap-mcp --client claude
Prerequisites
  • Node.js 18+
  • npx

Then, launch Claude Desktop and you're ready to go!

Sample Prompts

  • What is the price of bitcoin?
  • What are the available crypto assets?
  • What is the market cap of ethereum?

Tools

Bitcoin Price Tool

Gets price for Bitcoin specifically, it's a simple example of a primitive API call tool

Get Crypto Price Tool

Gets price for any cryptocurrency available on coincap API. It's a good example of how to get mandatory parameter data for your tool calls

List Assets

Gets a list of all crypto assets available in coincap API

Development - local build

To build it locally:

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

{
  "mcpServers": {
    "coincap-mcp": {
      "command": "/path/to/coincap-mcp/build/index.js"
    }
  }
}

Development

Install dependencies:

npm install

Build the server:

npm run build

For development with auto-rebuild:

npm run watch

📜 License

This project is licensed under the MIT License - see the LICENSE file for details.

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