Best Knowledge base MCP servers

Knowledge-base MCP servers give an agent access to your notes and personal or team knowledge — reading, searching, and updating a vault of markdown or a wiki so the agent can ground its work in what you've already written down. The pattern is durable, human-curated context: instead of re-explaining a project every session, the agent reads the relevant notes, cites them, and can append what it learns back into the vault. When choosing, check how content is reached (a local app's REST API and plugin versus a hosted workspace) and what the tools allow — read-and-search is low-risk, while write and delete tools change your notes, so prefer servers that let you keep mutations behind review. Most run locally over stdio against a vault you point them at.