MCP Server Development Guide

When to Use

Use this skill when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK).

Overview

Create MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. The quality of an MCP server is measured by how well it enables LLMs to accomplish real-world tasks.

The emoji-named implementation/evaluation guides below are not bundled in this tree. Resolve official SDK documentation rather than claiming those guides or scripts were read. Endpoint/service counts are examples and require current verification. stdio is a transport: its server can still make network requests. Tool annotations are hints, not authorization controls. Enforce tenant/identity checks, least privilege, input/output limits, timeouts and redacted errors in server code; remote services need the protocol’s supported authentication and request-origin protections. Never log protocol messages to stdout on stdio.

Microsoft MCP Ecosystem

Microsoft provides extensive MCP infrastructure for Azure and Foundry services. Understanding this ecosystem helps you decide whether to build custom servers or leverage existing ones.

Server Types