LangChain
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OPEN-Charlie
Claude CodeOther
frameworkragchainsagentsmemory
Description
The most widely used toolkit for building AI-powered apps. Connect Claude or other AI models to your documents, databases, APIs, and tools — then chain those connections together into workflows. If you're building a production AI app, chances are LangChain is involved somewhere.
Setup Guide
1. pip install langchain langchain-anthropic
2. from langchain_anthropic import ChatAnthropic
3. llm = ChatAnthropic(model="claude-opus-4-6")
4. Build chains: llm | StrOutputParser()
5. Add RAG: FAISS or Chroma + RetrievalQA chain