uagent-sync

One command to backup. One command to restore. Your entire dev environment, synced across machines.

Export your agent workspace — submodules, configs, skills, API keys — to a private GitHub repo.
On a new machine, pull it back and everything installs itself.

Why?

You have multiple machines. Each runs opencode and/or Codex with different plugins, MCP servers, skills, and submodules checked out at different commits. Keeping them in sync is a nightmare of git submodule update, npx skills add, and copy-pasting config files.

uagent-sync makes it a single command:

# On your main machine
opencode-sync push "Friday backup"

# On your new laptop
opencode-sync pull

That's it. Submodules reset to exact commits. MCP servers rebuilt. Skills reinstalled. Config merged. API keys templated. Everything just works.

Installation

uagent-sync ships one CLI and three agent entry points. Install the one you use:

DeepSeek Harness

# From npm (recommended — bundles the CLI as a dependency)
dsh plugin --profile <name> add uagent-sync-dsh

# Or from GitHub (monorepo sub-package, pure JS — no build authorization needed)
dsh plugin --profile <name> add "github:severin-ye/uagent-sync#master&path:packages/dsh"

OpenCode

npm install -g uagent-sync        # global CLI (commands: uagent-sync / opencode-sync)
# or run without installing:
npx uagent-sync <cmd>

Then add to your opencode config (config/opencode.json) and restart:

{ "plugin": ["file:///absolute/path/to/uagent-sync/dist/plugin.js"] }

Codex

codex plugin marketplace add severin-ye/uagent-sync
# Then open /plugins in the Codex CLI, install uagent-sync, and start a new session.

First backup

opencode-sync init          # detect your workspace
opencode-sync push "init"   # first backup

From source instead? git clone https://github.com/severin-ye/uagent-sync && cd uagent-sync && npm install && npm run build, then use node dist/cli.js <cmd>.

New machine? opencode-sync init --init-type sync --github-url <url> then opencode-sync pull.

Codex Support

uagent-sync is also a Codex plugin (skills + hooks, no MCP): the same CLI and the same skills are shared across both agents.

Install (Codex CLI)

codex plugin marketplace add severin-ye/uagent-sync
# Then open /plugins in the Codex CLI, install uagent-sync, and start a new session.

Install (ChatGPT desktop app / Codex desktop app)

1. Open Plugins → Personal → add the marketplace source https://github.com/severin-ye/uagent-sync
2. Install uagent-sync and start a new session

What you get after installing

• 3 skills: uagent-sync-backup (backup workflow), uagent-sync-restore (new-device restore), uagent-sync-update (ecosystem update) — loaded on demand, guiding the agent to use the CLI
• SessionStart hook: injects CLI usage hints at session start (PLUGIN_ROOT resolves the plugin root; on Windows it goes through a Git-bash wrapper)
• CLI (the single execution channel): node <plugin>/dist/cli.js <command> — 18 commands shared with the opencode plugin

How it works

uagent-sync/
├── .codex-plugin/plugin.json   # Codex plugin manifest (skills + hooks, mcpServers slot reserved)
├── hooks/                      # hooks-codex.json + run-hook.cmd + session-start
├── skills/                     # 3 SKILL.md files — shared by opencode and Codex
├── src/plugin.ts               # opencode plugin (config hook auto-registers the skills dir)
├── packages/dsh/               # DeepSeek Harness bundle (16 sync_* tools → CLI bridge)
└── src/cli.ts                  # 18-command CLI — the single execution channel for all three

DeepSeek Harness Support

uagent-sync ships as a DeepSeek Harness bundle (packages/dsh/): 16 sync_* tools bridged to the same CLI. 中文名：U同步 / 优同步。

Install

# From npm (recommended — uagent-sync-dsh depends on uagent-sync, so the CLI ships along)
dsh plugin --profile <name> add uagent-sync-dsh

# From GitHub (monorepo sub-package, pure JS — no build authorization needed):
dsh plugin --profile <name> add "github:severin-ye/uagent-sync#master&path:packages/dsh"

# Or from a local checkout (auto-discovers dist/cli.js):
dsh plugin --profile <name> add ./packages/dsh

The plugin locates the CLI in this order: cordis.yml config.cliPath → env OPENCODE_SYNC_UAGENT_SYNC_CLI → local-checkout relative path → npm dependency uagent-sync/dist/cli.js → workspace recursion (walk up to .gitmodules, then find uagent-sync/dist/cli.js). Details: packages/dsh/README.md.

DeepSeek Harness is currently Developer Preview; see the plugin docs for the current bundle/patch format.

Workspace Root Resolution

Every node dist/cli.js * command needs to know the workspace root (the directory containing .gitmodules). Resolution order:

1. Env var OPENCODE_SYNC_WORKSPACE_ROOT=<path> (explicit, highest priority)
2. Fixed cache ~/.config/opencode/sync-cache.json (reachable from any working directory)
3. Legacy cache auto-migration (usync-dotfiles/state/sync-cache.json, written by v1.0.0)
4. Walk up from the opencode process working directory looking for .gitmodules

Launching opencode from the desktop, home directory, or the OpenChamber default directory works fine — no need to start inside the workspace. If all four paths fail, the error message includes actionable guidance.

What It Syncs

Multi-agent configuration console

Inspect Codex, OpenCode, and DeepSeek Harness configuration without changing it:

opencode-sync inventory --json
opencode-sync dashboard

The dashboard binds to 127.0.0.1 by default and prints the actual local URL. Phase 1 is read-only: it visualizes Skills, instructions, MCP declarations, hooks, plugins/tools, portability, and migration gaps. Secret values, sessions, memories, provider credentials, permissions, themes, shortcuts, UI state, and caches are excluded. DeepSeek MCP remains marked unverified until local evidence proves support.

🌐 Language (English / 中文)

Output defaults to English and can be switched to Chinese per run or persistently:

• CLI: --lang zh flag, or UAGENT_SYNC_LANG=zh environment variable (system locale is the fallback, then English).
• Dashboard: use the 中文 / EN toggle in the top bar — the choice is remembered in localStorage (uagent-lang).
• Generated documents (SYNC-GUIDE.md, know-how files) follow the active language.

opencode-sync api-keys detect            # English by default
opencode-sync api-keys detect --lang zh  # Chinese
UAGENT_SYNC_LANG=zh opencode-sync guide  # Chinese guide

CLI (18 commands)

Run any command as node dist/cli.js <command> (or opencode-sync <command> after npm link).

The MCP-server form (v1.0.0) was removed — since v1.1.0 only the opencode plugin form and the standalone CLI exist. Tool/command names keep the opencode_sync_* / node dist/cli.js prefixes for compatibility.

Architecture

uagent-sync/                  # ← This repo (code only, never modified at runtime)
├── src/
│   ├── lib/                   # Modules, each <200 lines
│   │   ├── types.ts           #   All interfaces
│   │   ├── run.ts             #   Shell execution + safety (shellEscape, isPathSafe)
│   │   ├── cache.ts           #   Workspace root detection (fixed cache + env + migration)
│   │   ├── init-state.ts      #   Init lifecycle tracker
│   │   ├── log.ts             #   Install provenance log
│   │   ├── state.ts           #   Export/import/diff core logic
│   │   ├── workspace.ts       #   Verify/setup/submodule status
│   │   ├── github.ts          #   Private repo creation
│   │   ├── keys.ts            #   API key detection & templates
│   │   ├── skills.ts          #   Skill source map
│   │   ├── update.ts          #   updateExtensions — ecosystem update orchestration
│   │   ├── codebase-memory.ts #   codebase-memory-mcp release updater
│   │   └── guide.ts           #   SYNC-GUIDE.md generator
│   ├── sync.ts                # Barrel export
│   ├── plugin.ts              # opencode plugin (16 opencode_sync_* tools)
│   └── cli.ts                 # Standalone CLI (16 commands)
├── skills/                    # 3 shared skills (opencode + Codex)
├── hooks/                     # Codex SessionStart hook
├── .codex-plugin/             # Codex plugin manifest + marketplace
├── test/                      # node:test suites (run `npm test`)
├── .github/workflows/         # CI + Release automation
├── CHANGELOG.md               # Keep a Changelog
├── RELEASING.md               # Release playbook
└── dist/                      # Compiled output

usync-dotfiles/             # ← Runtime data (separate repo, synced via Git)
├── state/                     # Runtime state files
├── guide/                     # Auto-generated docs
├── keys/                      # API key templates
├── config/                    # OpenCode config templates
├── sessions/                  # Chat history (from session-recorder plugin)
└── scripts/                   # Bootstrap scripts

Code never touches data. The plugin lives in one directory. All generated files go to usync-dotfiles/. Clean separation.

Development

git clone https://github.com/severin-ye/uagent-sync
cd uagent-sync
npm install
npm run typecheck    # tsc --noEmit
npm run build        # TypeScript → dist/
npm test             # full node:test suite

CI gate (GitHub Actions, Windows, Node 20/22): npm run build + npm test must pass before merge.

Release

See RELEASING.md. Flow: update CHANGELOG → npm run release:patch|minor|major (version + tag + push) → GitHub Actions builds, tests, and creates a Release with the tarball attached.

Security

• Command injection hardened: shellEscape() wraps all user input before shell execution. Git commits use -F file input instead of -m string interpolation.
• Path traversal guarded: isPathSafe() validates all file paths resolve within workspace root.
• Zod schema enforced: Every input validated with .min(), .max(), .strict() before touching the filesystem.
• Secrets never exported: Only environment variable names are recorded. Values stay on your machine.
• Private repos by default: create_repo creates --private. Warns if existing repo is public.

Contributing

PRs welcome. Test-first: new features ship with tests, bug fixes ship with a failing-then-passing regression test. Check evaluation.xml for the test suite design.

🤖 For AI Agents: See AGENTS.md — a complete step-by-step guide that enables any AI agent to install, configure, and run full backup/sync workflows with zero additional prompts. Just point the agent at this repo.

License

MIT © 2026 uagent-sync contributors

简体中文 | English