What makes a note app an "MCP note app"
A normal note app stores text for you to read. An MCP note app adds a server that speaks the Model Context Protocol, so an AI assistant can connect and use your notes as tools: search them, read them, create new ones, and update existing ones. The notes become live context for every conversation, not a file you copy and paste from.
Which note apps have an MCP server
Support varies, and the important detail is whether the server is hosted (a remote assistant like ChatGPT on the web can reach it) or local (only desktop clients on the same machine).