Mcp Builder

MCP Builder

Activate this skill when building MCP servers to integrate external APIs or services.

When to Use

• Creating a new MCP server for an API
• Adding tools, prompts, or resources to an MCP server
• Debugging MCP server connectivity
• Designing tool schemas for LLM consumption

MCP Server Structure

• Tools: functions the LLM can call
• Resources: data the LLM can read
• Prompts: pre-built prompt templates

Implementation (TypeScript)

import { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js';

const server = new McpServer({ name: 'my-server', version: '1.0.0' });

server.tool('tool-name', { param: z.string() }, async ({ param }) => {
  return { content: [{ type: 'text', text: result }] };
});

Implementation (Python)

from mcp.server.fastmcp import FastMCP

mcp = FastMCP("my-server")

@mcp.tool()
def tool_name(param: str) -> str:
    return result

Rules

• Design tools with clear, specific names
• Use Zod/Pydantic schemas for input validation
• Handle errors gracefully with informative messages
• Keep tool descriptions concise but complete
• Test tools independently before integration

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: ihatesea69
• Source: ihatesea69/kiro-kit
• License: MIT
• Homepage: https://www.npmjs.com/package/kiro-kit

Install and usage instructions live in the source repository linked above.