# truss44-mcp-crypto-price

Hands your agent live crypto prices, fiat rates and a market overview from CoinCap. Useful when you want portfolio math or exchange data without leaving the chat.

- MCP server · `type=mcp` · Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed, Gemini CLI · ★ 39
- Author: truss44
- License: MIT · policy=link-only · description only; the file stays with the author
- Source: https://github.com/truss44/mcp-crypto-price
- Updated: 2026-10-24
- HTML: https://affpapa.org/en/nevibecode/mcp/truss44-mcp-crypto-price

## What it does

The server talks to CoinCap v3 and exposes a set of tools: current price and 24h stats, converting an amount into fiat, market analysis with the top 5 exchanges and VWAP, global figures such as Bitcoin dominance, fiat and crypto rates, exchanges ranked by volume, top assets by market cap, fuzzy search by name or symbol, a detail card for one coin, and a side-by-side comparison of 2–5 coins.

Tool names carry a category prefix — `price-*`, `market-*`, `assets-*`, `analysis-*`. Both STDIO and Streamable HTTP transports work; over HTTP the server listens on port 3000, and `PORT` changes that. HTTP clients pass the key in the URL itself: `http://localhost:3000/mcp?COINCAP_API_KEY=YOUR_API_KEY_HERE`.

You need Node.js 22.14+ and a `COINCAP_API_KEY` — a free tier exists, but every tool errors out without a valid key. CoinCap v2 is gone, so older configs pointing at it stop working. Running through the Smithery CLI means authenticating with `smithery auth login` or `SMITHERY_API_KEY`; recent CLI builds reject keys passed via `--key`.

## Requirements
- Remote server: `https://server.smithery.ai/@truss44/mcp-crypto-price/mcp`

## Install

### Claude Code (native platform)

**Platform CLI: remote server**
```bash
claude mcp add --transport http truss44-mcp-crypto-price https://server.smithery.ai/@truss44/mcp-crypto-price/mcp
```

### Codex

**Platform CLI: remote server**
```bash
codex mcp add truss44-mcp-crypto-price --url https://server.smithery.ai/@truss44/mcp-crypto-price/mcp
```

### Cursor

**Config file**
File `.cursor/mcp.json`:
```json
{
    "mcpServers": {
        "truss44-mcp-crypto-price": {
            "url": "https://server.smithery.ai/@truss44/mcp-crypto-price/mcp"
        }
    }
}
```

### GitHub Copilot

**Config file**
File `.vscode/mcp.json`:
```json
{
    "servers": {
        "truss44-mcp-crypto-price": {
            "type": "http",
            "url": "https://server.smithery.ai/@truss44/mcp-crypto-price/mcp"
        }
    }
}
```

### Gemini CLI

**Platform CLI: remote server**
```bash
gemini mcp add -t http truss44-mcp-crypto-price https://server.smithery.ai/@truss44/mcp-crypto-price/mcp
```

## When to use it
- check a coin's price and its 24h move
- convert a crypto amount into a fiat currency
- compare several coins by market cap and volume
- see how trading volume splits across exchanges
- find a coin by part of its name or ticker

## Example prompts
- What's BTC trading at right now, and how did it move today?
- Convert 2.5 BTC to EUR
- Compare BTC, ETH and SOL by market cap and volume

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