"OpenAI's Web Retrieval Infrastructure" matching MCP connectors:

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.

Voice-led, FSRS-scheduled flashcards from YouTube, PDFs, web, or text. Auto-graded quizzes.