Hassenfeld/Posts/00.Introduction/00.IntroductionApril 20, 2026· Anthropic AI LLM AgentAuthorHassenfeldViva La Vida Anthropic - This article is part of a series.Part 1: This ArticlePart 2: 01.Introducing Contextual RetrievalPart 3: 02.Building Effective AgentsAnthropic - This article is part of a series.Part 1: This ArticlePart 2: 01.Introducing Contextual RetrievalPart 3: 02.Building Effective Agents