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LangChain Architecture is a comprehensive Claude Code skill designed to help developers master the LangChain framework for building production-grade LLM applications. It provides structured guidance on implementing autonomous agents, complex multi-step chains, and sophisticated memory management systems. By leveraging standardized patterns for RAG (Retrieval-Augmented Generation), document processing, and observability through callbacks, this skill enables the creation of modular, scalable, and efficient AI workflows. It is particularly useful for developers transitioning from basic LLM prompts to complex, stateful applications that interact with external data and APIs.