FastMCP server for bidirectional sync between personal and team Obsidian vaults

vault-sync-mcp

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A FastMCP server for bidirectional sync between a personal Obsidian vault and a shared team vault. Designed for teams where one person (the vault owner) maintains the source of truth and shares selected content with collaborators via a shared folder (Google Drive, Dropbox, etc.).

Tools

Both push and pull default to dry_run: true — you always preview before executing.

Install

Open Claude Code, paste:

/plugin marketplace add adelaidasofia/vault-sync-mcp/plugin install vault-sync-mcp@vault-sync-mcp

Then edit config.yaml to set your vault paths and sync rules:

personal_vault: ~/vault/team_vault: ~/team-vault/

Restart Claude Code. Then ask:

"Show me vault sync status" "Push changes to team vault (dry run first)"

pip install fastmcp python-frontmatter pyyaml xxhash

Configuration

Everything lives in config.yaml:

personal_vault: ~/vault/team_vault: ~/team-vault/
no_sync:  - "Journal/"  - "Personal/"
sync_rules:  - path: "Team/"    direction: bidirectional
  - path: "CRM/"    direction: personal_to_team    filter:      frontmatter_field: relationship      frontmatter_values: [client, team, advisor]

Sync rule directions

• bidirectional — changes flow both ways
• personal_to_team — personal is source of truth, team gets updates
• team_to_personal — team is source of truth, personal gets updates (useful for shared docs)

Blocking sync on a file

Add sync: false to any file's frontmatter to exclude it from all sync operations.

Environment variables

Notes

• Uses os.walk(followlinks=True) instead of Path.rglob() to correctly handle macOS symlinks (Google Drive, iCloud shortcuts)
• Wikilinks are automatically rewritten to bare filenames during push ([[folder/Note]] becomes [[Note]])
• Content hashing via xxhash for fast change detection
• Conflict resolution: newer file wins; conflicts are logged and skipped

Related MCPs

Same author, same architecture pattern (FastMCP, draft+confirm on writes where applicable, vault auto-export, MIT):

• slack-mcp - multi-workspace Slack
• imessage-mcp - macOS iMessage
• whatsapp-mcp - WhatsApp via whatsmeow
• google-workspace-mcp - Gmail / Calendar / Drive / Docs / Sheets
• apollo-mcp - Apollo.io CRM + sequences
• substack-mcp - Substack writing + analytics
• luma-mcp - lu.ma events
• parse-mcp - markitdown / Docling / LlamaParse router
• rescuetime-mcp - RescueTime productivity data
• graph-query-mcp - vault knowledge graph queries
• graph-autotagger-mcp - wikilink suggestions from the graph
• investor-relations-mcp - seed-raise pipeline tracker

Telemetry

This plugin sends a single anonymous install signal to myceliumai.co the first time it loads in a Claude Code session on a given machine.

What is sent:

• Plugin name (e.g. slack-mcp)
• Plugin version (e.g. 0.1.0)

What is NOT sent:

• No user identifiers, names, emails, tokens, or API keys
• No file paths, message content, or anything from your work
• No IP address is stored after dedup processing

Why: Helps the maintainer know which plugins people actually install, so attention goes to the ones that get used.

Opt out: Set the environment variable MYCELIUM_NO_PING=1 before launching Claude Code. The hook will skip the network call entirely. Already-pinged installs leave a sentinel at ~/.mycelium/onboarded-<plugin> — delete it if you want to reset state.

License

MIT

Built by Mycelium AI. Full install or team version at diazroa.com.