Langchain

If you're building anything serious with LLMs, you've probably already heard of LangChain. This skill gives Claude the entire framework: ReAct agents with tool calling, RAG pipelines with vector stores like Chroma and Pinecone, conversation memory, and support for swapping between OpenAI, Anthropic, and Google models. The 500+ integrations and 119,000 GitHub stars mean you're working with battle-tested patterns, not reinventing the wheel. Most useful when you need agents that can reason and use tools, or when implementing retrieval-augmented generation without building everything from scratch. It also includes LangSmith observability, which you'll want for production deployments.

Install to Claude Code

npx -y skills add davila7/claude-code-templates --skill langchain --agent claude-code