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Self-hosted notes app with SQLite and MCP
Zen is a personal notes app that stores Markdown in SQLite and serves it from a single Go binary. It supports tags, templates, pinned notes, archive and delete flows, full-text search, and note links with preview. It also has experimental canvas, semantic search, and MCP note access.

Builders who want a lightweight self-hosted notes app for personal knowledge and agent access.
You can keep notes local, searchable, and portable without running a heavy notes platform.
What it does
Markdown notes in SQLite
Stores notes as Markdown with a local SQLite database.
Full-text search
Uses FTS with BM25 ranking to find notes quickly.
Flexible organization
Organizes notes with tags instead of rigid folders.
Templates and pinned notes
Lets you create reusable note templates and pin important notes.
Archive and soft delete
Supports archiving, soft deletion, and bulk cleanup actions.
Internal note links
Provides note links with side-panel previews.
Experimental canvas and semantic search
Adds canvas-based note organization and optional semantic search for notes and images.
MCP notes access
Exposes note search, listing, and reading through an MCP server.
How to get it
- 1Build from source
$ make build
README
Zen
Live Demo • Features • Updates

Features
- Single Go binary or Docker Compose
- Low resource usage
- Standard Markdown files, local SQLite database
- Organize with flexible tags, not rigid folders
- Markdown features like tables, code blocks, task lists, highlights, and more
- Full-text search with BM25 ranking
- Import and export data with full portability
- Templates
- Pinned notes
- Archive and soft delete notes
- Bulk archive and delete
- Internal note links with side panel preview
- Minimal dependency footprint
- Automated backups (via Zen Backup)
- Import from other services (via Zen Import)
Experimental Features
- Canvas for spatial organization of notes and images (stored as JSON Canvas)
- Semantic search for notes and images (via Zen Intelligence)
- Similar images (via Zen Intelligence)
- MCP for searching, listing and reading notes
Installation
Build from source
$ make build
Local Development
Run the application using default configuration
$ make dev
Run the application in watch mode
$ go install github.com/air-verse/air@latest
$ go install github.com/evanw/esbuild/cmd/esbuild@latest
$ make watch
Schema Migrations
- Create new migration file under
./migrations - Use the format
<version>_<title>.sql
Image Versioning
$ git tag x.y.z
$ git push origin x.y.z
Contributions
This is a personal project built for my own use. The codebase is available for forking and modifications. Note that I may not actively review pull requests or respond to issues due to time constraints.
Thanks
Files in the repo
- .claude
- .github
- .vscode
- assets
- commons
- docs
- features
- migrations
- .gitignore
- CLAUDE.md
- Dockerfile
- go.mod
- go.sum
- index.js
- license.md
- main.go
- makefile
- readme.md
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