CoinGecko

# CoinGecko API Server MCP Implementation Summary ## What We've Done We have successfully implemented JSON-RPC 2.0 support for the CoinGecko API Server, allowing it to function as an MCP component for AI systems like Claude. This implementation includes: 1. **JSON-RPC 2.0 Endpoint** - Created a standard-compliant `/rpc` endpoint - Implemented proper error handling - Supported all required parameters 2. **MCP Schema Definition** - Defined a schema at `/mcp/schema` that follows the MCP specification - Documented all tools and parameters - Included clear descriptions and return types 3. **Method Implementation** - Ping - Basic server status check - Price data - Get cryptocurrency prices - Market data - Get detailed market information - Trending coins - Get popular cryptocurrencies - Global data - Get market-wide statistics - Currency support - Get supported currencies 4. **Documentation** - Created step-by-step guides - Provided examples for all methods - Added troubleshooting information ## Connecting Claude Desktop To use the CoinGecko API Server with Claude Desktop: 1. **Start the Server** ```bash npm start ``` 2. **Connect Claude Desktop** - Open Claude Desktop - Go to Settings > MCP - Add a new component with the URL: `http://localhost:3000` - Claude should discover the available tools automatically 3. **Using the Tools** Claude can now perform tasks like: - Get current cryptocurrency prices - Search for trending coins - Check global market statistics - Compare prices across currencies ## Example Claude Prompts Here are some example prompts to use with Claude once connected: - "What's the current price of Bitcoin in USD and EUR?" - "Which cryptocurrencies are trending right now?" - "Compare the market cap of Bitcoin and Ethereum." - "What are the supported currency pairs for price conversion?" - "Show me the global cryptocurrency market data." ## Testing You can verify the implementation works correctly by running: ```bash npm run test-mcp ``` This will test the MCP endpoints and confirm they're functioning properly.