LangChain Hub Client

LangChain Hub (pypi-slug: `langchainhub`) is an API client for the LangChain Hub, a centralized platform for sharing and discovering high-quality artifacts like prompts, chains, and agents for building LLM applications. It allows users to upload, browse, retrieve, and manage these components. The current version is 0.1.21. It's actively developed as part of the broader LangChain ecosystem, with releases typically tied to LangChain updates.