obsidian-notion-cli

One-way sync from a markdown vault (Obsidian) to Notion pages. Frontmatter is the contract.

Your vault is source of truth. Notion is an auto-generated dashboard. No drift, no manual copy-paste.

Built at BTW Studio. Extracted from our internal notion-sync.js pipeline that runs daily against our private vault.

Why

• You write in Obsidian (fast, local, markdown).
• Your team / clients / dashboard lives in Notion (shareable, structured, linkable).
• Most sync tools try to be bidirectional and end up corrupting both. vault-sync is one-way: vault → Notion. Simple to reason about. Never surprises you.

Install

npm install -g obsidian-notion-cli
# or use with npx (no install):
npx obsidian-notion-cli@latest push

Requires Node ≥ 20.

Setup (2 minutes)

1. Add a Notion integration

Go to notion.so/profile/integrations → create an internal integration → copy the token. Share the pages you want synced with your integration (Notion → page → Connections → add integration).

2. Initialize config

cd /path/to/your/vault
npx obsidian-notion-cli init

Creates .vault-sync.json:

{
  "vault": ".",
  "projectsDir": "projects",
  "frontmatterKey": "notion_id",
  "glob": "**/*.md",
  "dryRun": false
}

3. Set notion_id in your markdown frontmatter

For each markdown file you want synced, add the Notion page ID to its frontmatter:

---
notion_id: 345002d3-0d68-812b-ad1d-ca822eee4fce
title: My Project
status: active
---

# My Project

## Description
...

4. Set the token

export NOTION_TOKEN="secret_..."

Or add it to .vault-sync.json under "token" (not recommended for shared repos).

5. Sync

npx obsidian-notion-cli push

Output:

✓ my-project → 345002d3-0d68-812b-ad1d-ca822eee4fce · 14 blocks
✓ other-project → 345002d3-0d68-81d5-a1b2-ff14a77dc9c4 · 22 blocks

2 file(s) synced.

Commands

Command	What it does
vault-sync init	Create .vault-sync.json in current directory
vault-sync list	List all markdown files with notion_id frontmatter (preview what would sync)
vault-sync push	Sync all files — replaces existing page content with rendered markdown
vault-sync push --dry-run	Show what would be synced without writing to Notion
vault-sync push --project <slug>	Only sync files whose slug contains <slug>

What markdown features are supported

Markdown	→ Notion block
# H1 / ## H2 / ### H3	heading_1 / heading_2 / heading_3
- item / * item	bulleted_list_item
1. item	numbered_list_item
- [ ] task / - [x] done	to_do block
> quote	quote block
```lang\ncode\n```	code block (language detected)
Plain paragraphs	paragraph block

Inline formatting (bold/italic/links) is rendered as plain text in v0.1 — improvements coming in v0.2. PRs welcome.

Architecture

vault-sync is deliberately tiny:

vault/
  projects/
    my-project.md         ← has notion_id: xxx in frontmatter
  .vault-sync.json        ← config: vault path + projectsDir
  
$ vault-sync push

├─ discoverFiles()        walks projectsDir, filters by frontmatter.notion_id
├─ markdownToBlocks()     parses markdown, emits Notion block JSON
└─ syncFile()             wipes existing children, appends new blocks

=> Notion page is now a mirror of the markdown file.

Limitations (v0.1)

• One-way only: vault → Notion. Changes in Notion are not reflected back — they get overwritten on next push. This is a feature, not a bug.
• Inline formatting (bold, italic, links, code): rendered as plain text. v0.2 will parse them.
• No incremental diff: every push deletes all existing page blocks and re-appends. Fine for ≤ 50 project pages. If you have hundreds, the API call count will matter.
• No images / attachments handling in v0.1.
• Node ≥ 20 required (ESM, fs/promises).

Roadmap

• v0.2 — Inline formatting (bold/italic/links), better error messages, TS rewrite.
• v0.3 — Watch mode (vault-sync watch with Chokidar).
• v0.4 — GitHub Action starter (sync vault on push).
• v1.0 — Cloud SaaS with continuous sync + webhook triggers (if demand is there).

License

MIT — see LICENSE.

Contributing

PRs welcome. Keep scope tight: no bidirectional sync, no database mirrors, no "also syncs X". The point is to be small and predictable.

---

Built with ❤ by BTW Studio. Sister projects: Claude Agents Marketplace · btw-agents-pack.