Do I need an API key?

No! CoinCap's API is completely free and requires no authentication. Just subscribe and start querying. Rate limit is 30 requests/second on the free tier.

What cryptocurrencies are supported?

CoinCap tracks thousands of cryptocurrencies including Bitcoin, Ethereum, Solana, XRP, Cardano, Dogecoin, Avalanche, Polkadot and many more. Use list_assets with the search parameter to find any coin by name or symbol.

Can I get OHLCV data for technical analysis?

Yes! Use get_candles with the asset ID and interval (m1, m5, m15, m30, h1, h2, h6, h12, d1). Returns open, high, low, close and volume for each candle period.

Can I see which exchanges list a specific crypto?

Yes! Use get_markets with asset_id to see all exchanges that list a specific cryptocurrency. Results include the exchange name, trading pair, current price, 24h volume and volume percentage.

CoinCap MCP Server for Claude Desktop 9 tools — connect in under 2 minutes

Name: CoinCap
Availability: InStock
Author: Vinkius

modelcontextprotocol.io/quickstart/user

Built by Vinkius GDPR 9 Tools IDE

Claude Desktop is Anthropic's native application for interacting with Claude AI models on macOS and Windows. It was the first consumer application to ship with built-in MCP support, making it the reference implementation for the Model Context Protocol standard.

Get MCP Server for AI Agents

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Open in ChatGPT Open in Claude Open in Perplexity

Vinkius supports streamable HTTP and SSE.

RecommendedModern Approach — Zero Configuration

Vinkius Desktop App

The modern way to manage MCP Servers — no config files, no terminal commands. Install CoinCap and 2,500+ MCP Servers from a single visual interface.

Download Free Open SourceNo signup required

Classic Setup·json

{
  "mcpServers": {
    "coincap": {
      // Your Vinkius token. get it at cloud.vinkius.com
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Fully ManagedVinkius Servers

60%Token savings

High SecurityEnterprise-grade

IAMAccess control

EU AI ActCompliant

DLPData protection

V8 IsolateSandboxed

Ed25519Audit chain

<40msKill switch

Stream every event to Splunk, Datadog, or your own webhook in real-time

* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

About CoinCap MCP Server

Connect to CoinCap APIs and access real-time cryptocurrency market data through natural conversation — no API key needed.

Claude Desktop is the definitive way to connect CoinCap to your AI workflow. Add Vinkius Edge URL to your config, restart the app, and Claude immediately exposes all 9 tools in the chat interface. ask a question, Claude calls the right tool, and you see the answer. Zero code, zero context switching.

What you can do

Asset Prices — Get current prices, market caps, 24h volume and supply info for any cryptocurrency
Asset Search — Search for crypto by name or symbol (Bitcoin, Ethereum, Solana, etc.)
Historical Prices — Retrieve price history with configurable intervals (1m to 1d)
Markets — See which exchanges list specific trading pairs and their 24h volumes
Exchange Rankings — Browse exchanges ranked by 24h volume with verification status
OHLCV Candles — Get candlestick data for technical analysis with multiple timeframes
Exchange Rates — View crypto-to-fiat conversion rates

The CoinCap MCP Server exposes 9 tools through the Vinkius. Connect it to Claude Desktop in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect CoinCap to Claude Desktop via MCP

Follow these steps to integrate the CoinCap MCP Server with Claude Desktop.

Open Claude Desktop Settings

Go to Settings → Developer → Edit Config to open claude_desktop_config.json

Add the MCP Server

Paste the configuration above into the mcpServers section

Restart Claude Desktop

Close and reopen Claude Desktop to load the new server

Start using CoinCap

Look for the 🔌 icon in the chat. your 9 tools are now available

Why Use Claude Desktop with the CoinCap MCP Server

Claude Desktop by Anthropic provides unique advantages when paired with CoinCap through the Model Context Protocol.

Claude Desktop is the reference MCP client. it was designed alongside the protocol itself, ensuring the most complete and stable MCP implementation available

Zero-code configuration: add a server URL to a JSON file and Claude instantly discovers and exposes all available tools in the chat interface

Claude's extended thinking capability lets it reason through multi-step tool usage, chaining multiple API calls to answer complex questions

Enterprise-grade security with local config storage. your tokens never leave your machine, and connections go directly to Vinkius Edge network

CoinCap + Claude Desktop Use Cases

Practical scenarios where Claude Desktop combined with the CoinCap MCP Server delivers measurable value.

Interactive data exploration: ask Claude to query DNS records, look up WHOIS data, and cross-reference results in a single conversation

Ad-hoc security audits: type a domain name and let Claude enumerate subdomains, check DNS history, and flag configuration anomalies. all through natural language

Executive briefings: generate comprehensive domain intelligence reports by asking Claude to compile findings into a formatted summary

Learning and training: new team members can explore API capabilities conversationally without needing to read documentation

CoinCap MCP Tools for Claude Desktop (9)

These 9 tools become available when you connect CoinCap to Claude Desktop via MCP:

get_asset

Returns the current price in USD, market cap, 24h trading volume, price change percentages (1h, 24h, 7d), circulating supply, total supply, max supply and rank. Asset IDs are lowercase with hyphens (e.g. "bitcoin", "ethereum", "solana"). Get detailed info for a specific cryptocurrency

get_asset_history

Returns daily or interval-based price snapshots. Use interval to specify the data granularity: "m1" (1 minute), "m5" (5 min), "m15" (15 min), "m30" (30 min), "h1" (1 hour), "h2" (2 hours), "h6" (6 hours), "h12" (12 hours), "d1" (1 day). Get historical price data for a cryptocurrency

get_candles

Each candle includes the open, high, low, close prices and volume for the time interval. Supports intervals: "m1", "m5", "m15", "m30", "h1", "h2", "h6", "h12", "d1". Optionally set start/end timestamps (milliseconds since epoch) for historical data. Get OHLCV candlestick data for technical analysis

get_exchange

Returns the exchange name, website, 24h volume, number of markets, rank, verification status and supported assets. Exchange IDs are lowercase (e.g. "binance", "coinbase-pro", "kraken"). Get detailed info for a specific cryptocurrency exchange

get_markets

Each market includes the exchange ID, base asset ID, quote asset ID, trading pair symbol, current price, 24h volume in USD and volume percentage. Optionally filter by asset ID or exchange ID. Get trading markets/pairs for assets or exchanges

get_rate

Returns the current rate for converting the asset to its corresponding fiat currency. Base IDs are typically asset IDs like "bitcoin", "ethereum" or fiat codes like "USD". Get a specific exchange rate

get_rates

). Returns the rate ID, symbol, currency symbol and current rate. Optionally filter by base currency. Get exchange rates for cryptocurrencies to fiat currencies

list_assets

Optionally search by name, filter by specific IDs, and paginate with limit/offset. Returns assets sorted by market cap by default. List cryptocurrency assets with prices and market data

list_exchanges

Each exchange includes its ID, name, website, 24h volume in USD, number of markets, rank and whether it's verified. List cryptocurrency exchanges with rankings

Example Prompts for CoinCap in Claude Desktop

Ready-to-use prompts you can give your Claude Desktop agent to start working with CoinCap immediately.

"What is the current price of Bitcoin?"

"Show me the top 5 cryptocurrency exchanges by volume."

"Show me the 1-hour candlestick data for Ethereum."

Troubleshooting CoinCap MCP Server with Claude Desktop

Common issues when connecting CoinCap to Claude Desktop through the Vinkius, and how to resolve them.

Server not appearing after restart

Ensure the JSON is valid (no trailing commas). Check the file path: ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\\Claude\\ (Windows).

Authentication error

Verify your Vinkius token is correct. Go to cloud.vinkius.com to regenerate it if needed.

Tools not showing in chat

Click the 🔌 icon at the bottom of the chat input. If it shows 0 tools, the server may still be connecting. wait a few seconds.

CoinCap + Claude Desktop FAQ

Common questions about integrating CoinCap MCP Server with Claude Desktop.

How does Claude Desktop discover MCP tools?

When Claude Desktop starts, it reads the claude_desktop_config.json file and connects to each configured MCP server. It calls the tools/list endpoint to fetch the schema for every available tool, then surfaces them as clickable options in the chat interface via the 🔌 icon.

What happens if the MCP server is temporarily unavailable?

Claude Desktop handles disconnections gracefully. if the server is unreachable at startup, the tools simply won't appear. Once the server becomes available again, restarting Claude Desktop will re-establish the connection. There is no timeout penalty or error loop.

Can I connect multiple MCP servers simultaneously?

Yes. You can add as many servers as you need in the mcpServers section of the config file. Each server appears as a separate tool provider, and Claude can use tools from multiple servers in a single conversation turn.

Is there a limit on the number of tools per server?

Claude Desktop can handle hundreds of tools per server. However, for optimal LLM performance, Vinkius servers are designed to expose focused, well-documented tool sets rather than overwhelming the model with too many options.

Does Claude Desktop support Streamable HTTP transport?

Yes. Claude Desktop supports both SSE (Server-Sent Events) and the newer Streamable HTTP transport that Vinkius uses. Simply provide the server URL. Claude auto-negotiates the transport protocol.