AI note taking app · your personal knowledge base · Obsidian alternative on the web, readable by AI
Write in markdown. Let Claude and other AI assistants read, write, and organize your notes through MCP — with every AI edit versioned and auditable. Your data stays plain markdown, exportable anytime.
Get started freeBuilt for people who take notes seriously — and use AI daily
Markdown is the source of truth
Every note is a plain markdown file. No proprietary blocks, no lock-in. Export your entire library as a zip whenever you want.
Your AI works the whole library
17 MCP tools give Claude Code, Cursor and other AI terminals the same powers you have: create, edit, rename, move, search — folders and docs alike.
Every AI write is on the record
AI edits create versions and land in an audit ledger. See exactly what your AI changed, when, and roll back in one click.
Web-based, works on your phone
No desktop app to install, no vault to sync. Open a browser, write; your AI reads the same library from the terminal.
Connect your AI in two minutes
Create an API key in settings, add one line to your MCP config, and your AI assistant can read and write your notes — with rate limits, scopes, and a full audit trail.
npx onekb-mcp