mcp-builder

Design, scaffold, and ship Model Context Protocol (MCP) servers that expose an API or local capability as well-named tools an LLM can call. Four-phase workflow (research → implement → review → evaluate), TypeScript vs Python SDK choice, stdio vs streamable-HTTP transport, tool naming and description discipline, Zod / Pydantic schemas, pagination, actionable error messages, MCP Inspector testing, and a 10-question realistic-task eval rubric. Windows / VS Code Copilot stdio gotchas included. USE FOR: build MCP server, write MCP server, Model Context Protocol, MCP tool design, MCP transport, MCP Inspector, FastMCP, MCP TypeScript SDK, MCP stdio, MCP streamable HTTP, register tool with MCP, MCP tool schema, MCP pagination, MCP error messages, MCP eval, wrap an API as MCP, mcp.tool, server.registerTool, Zod schema, Pydantic schema. DO NOT USE FOR: configuring MCP servers in .vscode/settings.json, writing REST/GraphQL APIs, writing MCP clients.

Compatibility

Requires Node.js with the MCP TypeScript SDK or Python with FastMCP, plus MCP Inspector for local testing.