- **USE KB** – Loads and embeds files from the `.gbkb/collection-name` folder into the vector database, making them available for semantic search in the current session. Multiple KBs can be active simultaneously.
- **CLEAR KB** – Removes a knowledge base from the current session (files remain embedded in the vector database).
- **ADD WEBSITE** – Crawl a website and add its pages to a collection.
The vector database retrieves relevant chunks/excerpts from active KBs and makes them available to the system AI automatically, providing context-aware responses during conversations.
## See Also
- [KB and Tools System](./kb-and-tools.md) - Complete reference for knowledge bases and tools
- [Vector Collections](./vector-collections.md) - How vector search works