How Modern AI Apps Actually Work: RAG, Agents & MCP Explained by an Architect

A software architect draws out how modern AI products are built, block by block: the model, RAG, tools (function calling), agents and MCP — then a real support-assistant design and the safety rules every AI app needs (hallucination, prompt injection, least privilege, human approval). 📘 50 ready-to-use AI prompts for work, study & family life (English + తెలుగు tips): topmate.io/architectexplainsai Chapters 0:00 Intro 0:41 1 · The Model 1:24 2 · Rag 2:18 3 · Tools 3:15 4 · Agents 4:17 5 · Mcp 5:22 Putting It Together 6:19 Safety 7:15 In Real Life 7:53 Wrap-Up Sources: Lewis et al. (2020), Retrieval-Augmented Generation · Anthropic, "Introducing the Model Context Protocol" (Nov 2024), modelcontextprotocol.io · OWASP Top 10 for LLM Applications (prompt injection) Script researched & written by a software architect. Narration: AI voice. Not affiliated with OpenAI, Google or Anthropic; product names are used only to describe them. One AI idea, every day. Subscribe so you don't miss the next one. Telugu channel: @ArchitectExplainsAITelugu #ai #rag #aiagents #mcp #llm #softwarearchitecture #aiexplained