LlamaHub provides general-purpose data loaders, readers, and tools that enable LLMs to ingest and access diverse external data sources. The library integrates with LlamaIndex and LangChain, allowing developers to build data agents that can retrieve and process information from sources like Google Docs, SQL databases, Notion, and Slack. It serves as the foundation for creating retrieval-augmented generation (RAG) pipelines and custom LLM-powered data workflows.