Restore your AI coding workspace on any device
Sessions, MCP servers, skills, and settings — across every coding agent and every machine you own. Encrypted so only you can read it.
# Device A — desktop
$ rein init
$ rein push
# encrypted · age · your bucket only
# Device B — laptop
$ rein pull
$ claude --resume
# context lives. paths remapped.Short alias rein · full namereinstate · same binary
Git has the code. The agent does not have the conversation.
You grind for hours on a Windows desktop across Claude Code, Codex, Gemini CLI. Open the MacBook: empty history, different MCP setup, start from zero. Vendor tools save sessions locally. Switching machines is context death.
Without Reinstate
Context dies at the desk
- Sessions stuck on the origin machine
- MCP and skills drift between devices
- Absolute paths break naive file sync
- Live remote tools need the desktop awake
With Reinstate
Portable state you control
- Push encrypted sessions to your storage
- Pull on the laptop when the desktop is off
- Path remap so Windows ↔ macOS resume works
- Same IDs, same agent, continue the thread
How it works
Not a live relay. Not Dropbox for session JSONL. A local-first sync engine that treats resume and path differences as the product.
- 01
Adapters read local state
Each coding agent writes sessions and config to disk in its own layout. Reinstate adapters know where to look.
- 02
Paths become portable
Absolute project paths are rewritten to tokens, then remapped on pull so resume finds the same work on another OS.
- 03
Encrypt, then upload
age encryption runs on the client with a passphrase-derived key. Remote storage only ever sees ciphertext.
- 04
Atomic restore
Pull decrypts, remaps, writes with backups and conflict forks. Never a silent overwrite of local history.
Built for the empty quadrant
Universal × cross-device × works when the other machine is off × encrypted × path-aware. Native vendor sync owns one ecosystem. DIY file sync breaks on paths and secrets.
Cross-device session sync
Continue the same agent thread on another machine with the conversation, not a cold re-prompt.
Multi-agent adapters
Claude Code and Codex first; Gemini CLI, OpenCode, and Grok Build on the roadmap. Not locked to one vendor.
End-to-end encryption
age with passphrase-derived keys. Ciphertext only on remote storage. Zero-knowledge by design.
Bring-your-own storage
Cloudflare R2, S3, GCS, S3-compatible, or WebDAV. You own the bucket and the credentials.
OS-aware path remapping
Windows ↔ macOS project roots rewritten so --resume actually finds sessions. The hard problem is the product.
Config + sessions
MCP servers, skills, agents, and settings travel with history. One environment everywhere you code.
Supported agents
Same-vendor resume only. Cross-agent value is portable config, skills, and environment — not replaying one model’s transcript into another.
| Agent | Sessions | Config / MCP | Status |
|---|---|---|---|
| Claude Code | Yes | Yes | Priority (v0.1) |
| OpenAI Codex CLI | Yes | Yes | Priority (v0.1) |
| Gemini CLI | Planned | Planned | Phase 1 |
| OpenCode | Planned | Planned | Phase 1 |
| Grok Build | Planned | Planned | Phase 2 |
Details in adapters docs.
Zero-knowledge, open source
Apache-2.0. Auditable. Patent grant. No vendor lock-in. A future optional hosted convenience layer would still only store ciphertext — and is not required.
Read the security model- E2E encryption
- Ciphertext only on remote storage. Keys derived from your passphrase; lose the passphrase, lose decryptability.
- Credential denylist
- auth.json and tokens stay local by default. Secrets are not part of the sync surface.
- No vendor API keys required
- Reinstate reads local agent files. It does not need Anthropic, OpenAI, or Google credentials.
- Fail-safe restore
- Timestamped backups, conflict forks, atomic writes. Safe defaults over silent merge.
Get early access
v0.1 CLI is under active development. Join the waitlist for release notes and early access. We will not sell your email. Resend confirmation comes later.