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mcp-builder

Build MCP servers with JSON-RPC 2.0, stdio/HTTP transport, and authentication.

26|5|Updated Oct 26, 2025
Search Tags:#microservices#ai integration#backend development#api integration#tool building#claude tools#protocol design
One-click install
npx skills add https://github.com/AutumnsGrove/ClaudeSkills --skill mcp-builder-autumnsgrove
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: mcp-builder
Source: https://github.com/AutumnsGrove/ClaudeSkills/tree/main/mcp-builder
Command: npx skills add https://github.com/AutumnsGrove/ClaudeSkills --skill mcp-builder-autumnsgrove

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes examples (resource) and references (resource) components.

What problem does it solve?

Creating custom tools and servers for Claude to interact with, or building complex multi-component applications, can be challenging. This Skill simplifies the development of Claude-compatible tools and microservices, providing guidance and examples for protocol specification, API wrappers, and server implementation, enabling seamless AI integration.

Core Features & Use Cases

  • Protocol Specification: Design clear communication protocols for Claude to interact with your custom tools.
  • REST API Wrappers: Build Python wrappers for external APIs, making them accessible to Claude.
  • Microservice Development: Create simple or advanced servers (e.g., database, resource, calculator) that Claude can call.
  • Use Case: You want Claude to interact with your internal inventory system. Use this Skill to design a REST API wrapper for your inventory database, define the tool schema for Claude, and implement a simple server that exposes inventory lookup functionality.

Quick Start

Example: Define a simple tool for Claude

(Assuming a tool definition in JSON or YAML)

{

"name": "calculator",

"description": "Performs basic arithmetic operations.",

"input_schema": {

"type": "object",

"properties": {

"operation": {"type": "string", "enum": ["add", "subtract"]},

"num1": {"type": "number"},

"num2": {"type": "number"}

}

}

}

Frequently Asked Questions about mcp-builder

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I build a custom Claude tool or MCP server?▼

Build custom Claude tools by defining tool schemas with JSON-RPC 2.0 messaging, implementing stdio or HTTP transport, and providing input validation via JSON Schema. This Skill provides a comprehensive framework with examples and references for creating secure, standardized MCP servers that Claude can interact with directly.

Can I integrate external APIs with Claude using MCP?▼

Yes. Create REST API wrappers and MCP servers to expose external APIs to Claude. This Skill guides you through protocol specification, API wrapper development, and server implementation, enabling Claude to call your custom-built integrations securely with authentication options including API keys, OAuth 2.0, and Bearer tokens.

What authentication methods does MCP support?▼

MCP servers support flexible authentication including API keys, OAuth 2.0, and Bearer tokens. This Skill covers implementation patterns for each, along with logging, rate limiting, and caching to ensure secure, robust server deployments that protect your tools and resources.

How do I create a microservice that Claude can call?▼

Design and implement microservices—from simple calculators to database servers—using MCP's JSON-RPC 2.0 protocol with stdio or HTTP transport. This Skill provides examples and deployment guidance for building domain-specific tool servers that expose resources, prompts, and tools Claude can invoke.

Do I need to know protocol design to build MCP servers?▼

This Skill simplifies protocol design by providing clear communication patterns and ready-to-use examples. You define tool schemas, input validation rules, and authentication upfront; the framework handles JSON-RPC messaging and transport, lowering the barrier to building production-ready MCP servers.

What transport protocols does MCP support?▼

MCP supports both stdio and HTTP transport. This Skill covers implementation for both, enabling you to choose based on your deployment context—stdio for local integrations or HTTP for distributed microservices with resource providers and robust security.

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