AI Agent Architecture: Build Autonomous AI Agents with LangChain, RAG, Tool Calling & Multi-Agent Systems - From Prototype to Production

AI agents do work - this book teaches you to build autonomous agents with LangChain, RAG, tool calling and multi-agent orchestration, from first prototype to production deployment.The next wave of AI is not better chat - it is software that plans, uses tools, and completes jobs end to end: booking appointments, chasing invoices, qualifying leads, running operations. AI Agent Architecture teaches you how these agentic AI systems are actually built, from first principles to production. This is the machinery, not the hype.Every chapter works in three layers: Story - how agent architectures emerged, which designs survived contact with reality. Mechanism - planning loops, tool calling, memory systems, multi-agent orchestration, explained part by part. Mastery - build it yourself, with patterns and code you can run today.Inside you will learn:• The anatomy of an AI agent: planner, tools, memory, feedback loops• Tool calling and function schemas that do not break in production• ReAct, plan-and-execute, and multi-agent patterns - when to use each• RAG for agents: retrieval pipelines that feed real decisions• Memory that works: short-term, long-term, and vector recall• Guardrails, evaluation harnesses, and cost control for real deployments• "e;Try it"e; exercises in every chapter - build as you readWhether you want to build AI receptionists for local businesses, automate your own operations, or simply understand where the agentic AI industry is going, this book gives you the blueprint.Perfect for: developers, technical founders, automation consultants, and product builders who want to ship autonomous agents that survive production - not demos.