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

Search your Glasp web and Kindle highlights, notes, and AI memories from any MCP client. Read-only.

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.

Remote knowledge base built for teams. Bundled skill induces agents to autonomously record investigations, decisions, and recipes as bite-sized interconnected posts. Forum-style web UI for humans to browse the same graph. Compounds into a dense map of a team's tribal knowledge over time.

Brain dump, routines, task planning, focus, and instant thought retrieval