"Semantic Scholar" matching MCP connectors:

Private memory layer — one library your notes, docs, and chat history live in, that any AI tool (Claude, Cursor, ChatGPT) connects to over MCP instead of re-pasting context. Semantic search over your own documents with citations; every memory is a document you can read, edit, and delete. ~80% fewer context tokens than pasting your library. Connect via OAuth (sign in when prompted) — get started at

Noogat is a voice-first note-taking app for iOS and web with an MCP server for AI coding agents. Capture ideas hands-free via Siri, retrieve them inside Claude Code, Claude Desktop, or Cursor. Features: semantic search, AI auto-tagging, search by time, related notes. Pro subscription required for MCP access.

Create, search, and update notes in an xNotepad AI notebook, with semantic search and AI Q&A.

Search and manage your Dexi notes: full-text and semantic search, tags, folders, spaced repetition.

Voice notes that organize themselves. Capture by Siri, AI auto-tags, semantic search retrieves.

Personal knowledge base MCP server with semantic search, auto-categorization, metadata extraction