What is the Model Context Protocol (MCP)?

MCP is an open standard that enables bidirectional communication between AI models like Claude and external tools, resources, or prompts through a unified interface.

Does this skill support remote MCP servers?

Yes, it provides implementation patterns for both local 'stdio' transport and remote HTTP/SSE (Server-Sent Events) transport layers.

Why does this skill emphasize Pydantic V2?

Pydantic V2's strict mode is used to automatically generate accurate JSON schemas for tool inputs, ensuring Claude sends correctly formatted data to your server.

What is the difference between a Tool and a Resource in MCP?

Tools are model-controlled actions that can have side effects (like writing files), while Resources are app-controlled read-only data sources (like log files or documentation) provided to the model.

MCP Protocol Fundamentals

Name: MCP Protocol Fundamentals
Author: Agentient

byAgentient

API Development

Standardizes the implementation of Model Context Protocol (MCP) servers using JSON-RPC 2.0 and Pydantic validation.

About

This skill provides the architectural foundation for building and maintaining Model Context Protocol (MCP) servers. It guides Claude in implementing bidirectional communication between AI models and external tools, ensuring strict adherence to the JSON-RPC 2.0 specification and Pydantic V2 schema validation. By codifying best practices for transport layers, message flows, and error handling, this skill enables developers to create robust, production-grade extensions that allow Claude to interact with local filesystems, databases, and third-party APIs.

Key Features

Pydantic V2 strict mode schema integration
0 GitHub stars
Standardized JSON-RPC error code handling
Tool, Resource, and Prompt definition standards
JSON-RPC 2.0 bidirectional communication patterns
Stdio and HTTP/SSE transport layer implementation

Use Cases

Developing local filesystem tools for AI-driven code manipulation
Building custom MCP servers for proprietary internal databases
Standardizing API-to-LLM interfaces via the MCP specification

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add agentient/vibekit mcp-protocol-fundamentals

For use in Claude.ai and ChatGPT

Download Skill

GitHub