How to Build and Debug MCP Servers for Claude Desktop in 5 Seconds 🔨

A developer built mcp-forge, an open-source toolkit for building, testing, and debugging MCP servers for Claude Desktop and other LLM clients. The tool provides zero-setup commands for serving, inspecting, initializing, and visualizing MCP servers, and can be run directly via npx.

Model Context Protocol MCP by Anthropic is rapidly becoming the open standard for connecting LLMs like Claude Desktop, Cursor, and Windsurf to local dev tools, APIs, and databases. However, setting up an MCP server from scratch, configuring stdio transports, and debugging JSON-RPC requests in the terminal can be tedious. To solve this, I built mcp-forge — an open-source Swiss-Army developer toolkit and inspector for MCP servers. mcp-forge ? mcp-forge gives you everything you need to build, test, inspect, and run MCP servers with zero setup overhead : npx mcp-forge serve npx mcp-forge inspect <cmd npx mcp-forge init <name tsup bundler, and Vitest. npx mcp-forge ui You don't even need to install anything globally You can run mcp-forge directly via npx . mcp-forge to Claude Desktop Add this snippet to your claude desktop config.json : { "mcpServers": { "mcp-forge": { "command": "npx", "args": "-y", "mcp-forge", "serve" } } } Now Claude can automatically inspect your Git status, fetch system memory/CPU telemetry, validate Mermaid diagram syntax, and test REST endpoints npx mcp-forge init my-awesome-mcp-server cd my-awesome-mcp-server npm install npm run dev You get a fully-typed MCP server template with @modelcontextprotocol/sdk configured and ready to publish. npx mcp-forge inspect node ./dist/index.js mcp-forge will connect to the stdio transport, list all declared tools, prompts, and resources, and allow you to test tool calls directly with live JSON-RPC logging. 🌐 Visual Web Dashboard Prefer a GUI over terminal output? Launch the local web dashboard: npx mcp-forge ui Open http://localhost:3000 http://localhost:3000 in your browser to inspect active MCP tools and watch live WebSocket traffic. 🤝 Open Source & Contributing mcp-forge is 100% open-source under the MIT License. We welcome contributions from developers worldwide Whether you want to add a new built-in tool e.g. SQLite inspector, Docker manager or improve the CLI, check out our GitHub repository. ⭐ Check out the project on GitHub: https://github.com/sweecksss/mcp-forge https://github.com/sweecksss/mcp-forge If you find mcp-forge useful, please leave a ⭐️ Star on GitHub — it helps the project grow Happy coding 🚀