Requires Node 18+ on your system so npx can fetch the package on first run. Claude Code persists MCP servers via its CLI — no config file to edit, just run the command below once. Paste the config below, then follow the reload step to register @fastmcp-me/btcpayserver-mcp.
Run the command below in your terminal — Claude Code persists it for you.claude mcp add btcpayserver-mcp --env BTCPAY_BASE_URL=https://your-btcpay-instance.com --env BTCPAY_API_KEY=your_api_key_here --env BTCPAY_STORE_ID=your_default_store_id -- node path/to/btcpayserver-mcp/dist/index.js