Notes stay notes
A row is any note whose table property names a table. Its properties are the columns. You
can still open it, edit it and link to it.
The engine of your second brain
The engine of your second brain. Your Markdown notes become database tables that you and your AI agents read and write safely.
Tables in one file
Tables, columns, constraints and views live in database.yaml. Agents create and change them
for you.
Safe writes
Every write is checked against its table, then journaled. You can undo it. A refused write changes nothing.
Made for agents
An HTTP API, a JavaScript client, and an MCP server (datanotes-mcp) for Claude, Cursor, Codex
and any other client. Apps add their own tools.