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What Is RAG and How Do You Build a Free RAG Stack for Document Q&A?
RAG (Retrieval-Augmented Generation) is a pattern where you retrieve relevant chunks of your own documents and pass them to an LL…
What is Structurizr and how does it use the C4 model for software architecture diagrams?
Structurizr is a "models as code" tool for visualising, documenting, and exploring software architecture. You write Structurizr D…
What Is MCP and How Does It Connect AI Agents to Tools?
MCP (Model Context Protocol) is an open protocol that gives AI models a standard way to connect to external tools, data sources, …
What Are AI Agents and How Do You Connect Them to Real-World Tools?
An AI agent is a system that uses a language model to decide what to do next — calling tools, fetching data, and chaining steps —…
What Can You Actually Do With a Free Hosted REST API Like ReqRes?
A free hosted REST API like ReqRes gives you a real HTTP endpoint you can call immediately—no signup, no local server, no databas…