LangChain

Eval Engineeringlangchain-ai

Inspect an agent repo and its traces, interview you, then write, run and audit evals one regression case at a time

LangChain RAGlangchain-ai

Build a working RAG pipeline — loaders, chunking, embeddings, vector store — so an agent answers from your own documents

Deep Agents Memorylangchain-ai

Give an agent persistent memory and a filesystem so it remembers across sessions