I Built a Custom MCP Server That Lets Claude Query My PostgreSQL Database | Step-by-Step 2026

Description

🚀 In this video, I'll show you how to build a custom MCP (Model Context Protocol) server from scratch using Node.js and connect it to a real PostgreSQL database — so Claude AI can directly query your data by just asking questions in plain English! No plugins. No extra tools. Just a custom MCP server running on your local machine. ━━━━━━━━━━━━━━━━━━━━━━━━ 📌 WHAT YOU'LL LEARN ━━━━━━━━━━━━━━━━━━━━━━━━ ✅ What is MCP and how it works (Host, Client, Server) ✅ Setting up a Node.js MCP server project from scratch ✅ Connecting Claude to a real PostgreSQL database ✅ Building 3 MCP tools: query_database, get_schema, get_dashboard_stats ✅ Input validation with Zod (only safe SELECT queries allowed) ✅ How to register your MCP server inside Claude Desktop ✅ Live demo: Claude answering real database questions ✅ Security best practices for production use ━━━━━━━━━━━━━━━━━━━━━━━━ 🛠️ TOOLS & TECHNOLOGIES ━━━━━━━━━━━━━━━━━━━━━━━━ - Claude Desktop (Anthropic) - Node.js + npm - @modelcontextprotocol/sdk - PostgreSQL (pg library) - Zod (validation) - dotenv MCP server tutorial, Model Context Protocol, Claude AI database, PostgreSQL Claude integration, custom MCP server, Claude Desktop MCP, AI database connection, Claude AI PostgreSQL, build MCP server Node.js, MCP server from scratch, Claude AI tools, AI agent database, connect AI to database, Claude Desktop tutorial, MCP tools Node.js, AI backend integration, Claude MCP 2025, PostgreSQL AI query, MCP server JavaScript, anthropic Claude tools, AI data pipeline, Claude query database, MCP host client server, agentic AI tutorial #MCP #ClaudeAI #PostgreSQL #MCPServer #AITutorial #NodeJS #ModelContextProtocol #ClaudeDesktop #AIDatabase #BackendDevelopment #ArtificialIntelligence #DatabaseIntegration #AITools #WebDevelopment #Anthropic #AIAgent #JavaScript #FullStackDev #AIAutomation #LearnAI