mcp-builder

Q: How do I install mcp-builder?

Run npx skills add https://github.com/moizibnyousaf/ai-agent-skills --skill mcp-builder in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/mcp-builder/ (personal) or .claude/skills/mcp-builder/ (project).

by moizibnyousafAI & Agents

Guide for creating high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK).

Installs: 117
Last 24h: —
Trending rank: —
Security: Not audited

Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/moizibnyousaf/ai-agent-skills --skill mcp-builder

01
Install
Run the command in your project. The CLI asks which agents to install for.
02
Describe the task
Ask your agent for something this skill covers. It loads mcp-builder automatically when relevant.
03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.

SKILL.md

The instructions your agent reads when the skill is triggered.

MCP Server Development Guide

Create MCP servers that enable LLMs to interact with external services through well-designed tools.

High-Level Workflow

Phase 1: Research and Planning

Understand Modern MCP Design:

Balance comprehensive API coverage with specialized workflow tools
Use clear, descriptive tool names with consistent prefixes (e.g., github_create_issue)
Design tools that return focused, relevant data
Provide actionable error messages

Study MCP Protocol:

Start with sitemap: https://modelcontextprotocol.io/sitemap.xml
Key pages: specification, transport mechanisms, tool definitions

Phase 2: Implementation

Recommended Stack:

Language: TypeScript (best SDK support)
Transport: Streamable HTTP for remote, stdio for local

Project Structure:

my-mcp-server/
├── src/
│   ├── index.ts      # Server entry point
│   ├── tools/        # Tool implementations
│   └── utils/        # Shared utilities
├── package.json
└── tsconfig.json

Tool Implementation Pattern:

server.registerTool({
  name: "github_create_issue",
  description: "Create a new GitHub issue",
  inputSchema: z.object({
    repo: z.string().describe("Repository name (owner/repo)"),
    title: z.string().describe("Issue title"),
    body: z.string().optional().describe("Issue body")
  }),
  outputSchema: z.object({
    id: z.number(),
    url: z.string()
  }),
  annotations: {
    readOnlyHint: false,
    destructiveHint: false,
    idempotentHint: false
  },
  handler: async (input) => {
    // Implementation
    return { id: 123, url: "https://..." };
  }
});

Phase 3: Test

# TypeScript
npm run build
npx @modelcontextprotocol/inspector

# Python
python -m py_compile your_server.py

Phase 4: Create Evaluations

Create 10 complex, realistic questions to test your MCP server:

<evaluation>
  <qa_pair>
    <question>Find all open issues labeled 'bug' in the repo</question>
    <answer>5</answer>
  </qa_pair>
</evaluation>

Tool Design Best Practices

Use Zod (TS) or Pydantic (Python) for schemas
Include constraints and examples in field descriptions
Define outputSchema for structured data
Support pagination where applicable
Add tool annotations (readOnly, destructive, idempotent)

FAQ

What does the mcp-builder skill do?

How do I install mcp-builder?

Run npx skills add https://github.com/moizibnyousaf/ai-agent-skills --skill mcp-builder in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/mcp-builder/ (personal) or .claude/skills/mcp-builder/ (project).

Which AI agents can use mcp-builder?

Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.

Is mcp-builder safe to install?

No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.

Who maintains mcp-builder?

It is published by moizibnyousaf in moizibnyousaf/ai-agent-skills. It has 117 recorded installs.

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mcp-builder

Install

Install

Describe the task

Review the result

SKILL.md

MCP Server Development Guide

High-Level Workflow

Phase 1: Research and Planning

Phase 2: Implementation

Phase 3: Test

Phase 4: Create Evaluations

Tool Design Best Practices

FAQ

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