Cable first
Uses the USB-C or Thunderbolt link when it is plugged in, then LAN, then Tailscale.
For Claude Code · Open source
Every Mac, the same Claude Code.
Sync sessions, memory, skills and settings between your Macs, and hand long work to a Mac mini. Plain SSH and rsync, no cloud in the middle.
npm i -g @crafter/twinTwo-way sync
Newer file wins. Nothing is ever deleted on the other side.
Every day
Start it on the laptop. Finish it on the mini.
twin pairFinds the other Mac and trusts it once.twin setupMakes it match this Mac and turns on auto sync.twin syncTwo-way, with backups kept for 14 days.twin run "fix the tests"Runs headless Claude Code on the mini.twin logs -fWatches the job live.twin fetchBrings its changes and its session back.
What syncs
Everything that makes it yours.
- ConfigSettings, CLAUDE.md, skills, commands, agents, hooks and output styles.
- SessionsTranscripts, auto memory, checkpoints, todos and plans.
- HistoryPrompt history for ↑ and ctrl+r, merged line by line.
- MCPYour MCP servers, and nothing else in that file.
Never synced: credentials. Each Mac signs in on its own.
Close the lid
The mini keeps working under caffeinate. Pick the session up later with claude --resume.
Different usernames
Home folders do not need to match. twin translates paths on every copy.
Built for agents
Every command speaks --json, and twin skill teaches Claude when to delegate.