claude-hop 0.1.0

Sync Claude Code sessions between two machines over SSH — no cloud.

Sync Claude Code sessions between two machines over SSH — no cloud storage, just rsync between your own boxes. Start a session on your Linux desktop, claude --resume it on your Mac (or the other way round).

Quickstart (30 seconds)

uv tool install claude-hop        # or: pipx install claude-hop
claude-hop init                   # asks for the SSH host, detects the rest
claude-hop push                   # then `claude --resume` on the other machine

No uv? One-liner that installs it first:

curl -sSL https://raw.githubusercontent.com/SeiduTakizawa/Claude-hop/main/install.sh | bash

Requirements: Python ≥ 3.11 on this machine; sshd and rsync on the other one (key-based SSH auth recommended).

Supported platforms

Any pair of Unix-shaped machines, in either direction: Linux ↔ macOS, Linux ↔ Linux, macOS ↔ macOS. The remap isn't tied to /home vs /Users — it maps your home here to your home there, whatever they are (identical homes on both sides work too; the remap just becomes a no-op and you keep the merge/safety machinery).

Windows is supported via WSL: inside WSL you have a real Linux home, rsync, and sshd, so claude-hop works there like on any Linux box — it syncs the Claude Code you run inside WSL. Native (non-WSL) Windows is not supported: Claude Code encodes C:\ project paths differently and there's no native rsync. If you need it, open an issue.

The problem it solves

Claude Code stores sessions in ~/.claude/projects/, indexed by the absolute path of the project with every non-alphanumeric character replaced by a dash:

/home/alice/work/webshop   →   ~/.claude/projects/-home-alice-work-webshop/

The absolute paths also appear inside the session JSONL files — cwd fields, file paths in tool calls. So copying the files verbatim from a Linux box (/home/alice) to a Mac (/Users/alice) produces sessions that claude --resume can never find: the directory name encodes the wrong path and the transcript still references the wrong filesystem.

claude-hop rewrites both during sync — directory names and JSONL contents — mapping your local home to the remote home (auto-detected at init), in whichever direction you sync. The rewrite is boundary-aware (/home/al never matches inside /home/alice) and round-trip safe: push then pull reproduces your files byte for byte.

Commands

Command	What it does
claude-hop init	Interactive setup: SSH host, connection test, remote home auto-detection, rsync checks.
claude-hop status	Table of local projects, session counts, and the remapped name each gets on the remote; flags ambiguous mappings.
claude-hop diff	What would sync, in both directions, without writing anything.
claude-hop push	Send local sessions to the remote machine.
claude-hop pull	Fetch remote sessions and merge them in.
claude-hop doctor	Environment checks: SSH, rsync versions, config, running Claude Code, stale staging dirs.

push and pull accept --dry-run (-n), --yes (-y), and --force.

Safety model

• Merge, never clobber. rsync runs with -u (newer file wins) and never with --delete — a sync can only add or update sessions, never remove.
• Staging, not in-place. Remapping happens in a temp dir; ~/.claude/projects/ is only ever touched by the merge itself.
• Refuses to run alongside Claude Code. Sessions are flushed to disk on exit, so syncing mid-session would miss your latest work. Override with --force if you know what you're doing.
• First-pull backup. The first pull that would merge into existing local sessions offers a tarball backup (~/.claude/backups/) before touching anything.

Configuration

~/.config/claude-hop/config.toml (written by init, $XDG_CONFIG_HOME honoured):

[remote]
host = "mac.local"          # SSH alias or hostname; "" = a local directory
home = "/Users/alice"       # auto-detected at init

[sync]
include_history = false     # also sync ~/.claude/history.jsonl (remapped)
include_agents = false      # also sync ~/.claude/agents/ (verbatim)
include_skills = false      # also sync ~/.claude/skills/ (verbatim)

[mappings]
# For projects that live at *different relative paths* on the two machines.
# Specific mappings win over the generic home remap.
"/home/alice/work/webshop" = "/Users/alice/projects/webshop"

claude-hop status shows exactly how every project will map; if one looks wrong, add it under [mappings].

Limitations worth knowing

• Sessions whose conversation text literally mentions the other machine's home path (e.g. a transcript discussing /Users/alice/... while on the Linux box) can't be rewritten losslessly — path rewriting is text-level by design, so such mentions get remapped too.
• Session files that aren't valid UTF-8 are copied verbatim without remapping rather than risk corrupting them.
• On macOS 15+, the bundled rsync is openrsync; it works, but if you hit option errors, brew install rsync.

Development

uv sync           # install with dev dependencies
uv run pytest     # unit + integration tests (integration needs rsync)
uv run ruff check .
make e2e          # full two-container SSH round trip (needs Docker)

The e2e rig (e2e/) spins up two containers — one with a Linux-style home, one macOS-style — wires SSH key auth between them, and drives the real CLI through push, modify-on-the-other-side, and pull.

License

MIT — see LICENSE.