# Knowledge MCP servers for AI agents

3 knowledge services in the mcpheaven catalog.

- [NotebookLM](https://mcpheaven.com/catalog/notebooklm.md) — Query notebooks, organize sources, and extract cited research. _(planned, slug `notebooklm`)_
- [Obsidian](https://mcpheaven.com/catalog/obsidian.md) — Search vaults, create notes, and maintain linked knowledge. _(planned, slug `obsidian`)_
- [Zotero](https://mcpheaven.com/catalog/zotero.md) — Search libraries, organize collections, and create citations. _(planned, slug `zotero`)_

All categories: https://mcpheaven.com/catalog.md