About LangChain Hub
LangChain Hub (accessible via LangSmith) is a repository and discovery hub for prompts (and other artifacts like chains/agents) where users can browse, download, edit, and commit prompt templates to LangChain workflows. ([blog.langchain.com](https://blog.langchain.com/langchain-prompt-hub?utm_source=openai))
Key Features
- Repository of prompt templates and artifacts with filters by use case, model, and language.
- Playground to edit and run prompts, then commit changes back to the Hub (read/write via LangSmith).
- SDK support to programmatically pull prompts into LangChain projects (hub.pull/hub.push).
- Integration path with LangSmith tooling for observability, debugging, and testing of prompt artifacts.
Use Cases & Best For
LangChain developers who want discoverable, reusable prompt templates and artifact management
Teams using LangSmith/LangChain that need a central store for prompts, chains, and agents
About Prompt Engineering
Optimize and manage prompts