"KnowledgeBase" matching MCP servers:

Enables MCP clients to read, search, list, and explore an Obsidian vault through coarse, intent-shaped tools, with optional read-only enforcement and a single write tool.

A MongoDB Atlas-based Notion-style knowledge base management MCP server that supports user workspaces, project management, page CRUD with tree structure, and text search.

Enables local agents to search and retrieve cited evidence from PDFs and Markdown notes, including page-specific passages and rendered page images.