NoteBridge
A universal connector that lets any AI assistant (Claude, ChatGPT, Cursor, custom bots) read and write your notes from OneNote, Notion, Obsidian, Apple Notes and Google Keep through one subscription — so you stop re-pasting your context into every chat.
knowledge workers and consultants who already use AI assistants daily and want their personal knowledge base available inside them
- One auth flow that links all major note platforms so any MCP-compatible AI can query them with the user's permission
- Smart scope picker — choose which notebooks to expose to which AI client (e.g. work notes to Claude, research notes to Cursor) for privacy
- Universal search across all linked note apps so a single AI prompt finds the meeting where you wrote a specific decision, even if it lives in OneNote
- Audit log showing every read/write each AI performed, with one-click revoke per app
The OneNote MCP rewrite shows the demand is real but each note platform is being bolted on one at a time by hobbyists — professionals need a single trustworthy connector that survives OAuth edge cases.
Real traction exists (OneNote MCP listed on Awesome MCP Servers with documented setup, Notion ships official hosted MCP) but the 7-reaction Dev.to article is small — clear appetite among power users, not yet mainstream.One Note MCP Server | Awesome MCP Servers ↗Notion MCP - Notion Docs ↗
Each platform now has official or strong third-party MCP (Notion official, OneNote community servers, Obsidian CLI-based server) — a 'universal connector' aggregating all of them is largely empty, but the individual building blocks are commoditized and platforms themselves may ship unified connectors.Obsidian Notes MCP Server - GitHub ↗Notion ships an official hosted MCP server ↗
Most MCP servers today are free/open-source (Notion official, community OneNote/Obsidian servers); MCPize pricing guide notes $5-20/mo band for utility servers is viable but unproven — willingness-to-pay for a wrapper is unclear when most users can self-host two configs.MCP Pricing Guide 2026 ↗GitHub danosb/onenote-mcp ↗
MCP is the new standard backed by Anthropic/OpenAI/Microsoft, giving staying power, but native per-app MCPs (Notion official, future Apple/Google) could eat the aggregator — risk that platforms disallow third-party unified auth.Get started with custom connectors using remote MCP ↗Apps in ChatGPT - OpenAI Help Center ↗
Building is doable in weeks — per-platform OAuth (especially Microsoft Graph device flow) is the painful part confirmed by the source Dev.to post; ongoing maintenance across 5 APIs is non-trivial but not hard.OneNote MCP server setup docs detail Azure/OAuth edge cases ↗