Agent Switch

All your AI coding accounts, signed in side by side —
and every session on the one with the most left.

Claude Code · Codex · Antigravity — macOS, Linux and Windows

Sound familiar?

• "I keep logging out and back in to switch accounts." Every account stays signed in, side by side. Switching never logs anyone out.
• "One account hits its limit mid-task while the other resets unused." Each new session starts on the account that would otherwise waste the most of its quota at its next reset.
• "I never know which account has what left." The menu-bar app shows every account's 5-hour and weekly limit, live.
• "Client work ends up on my personal account." Pin a folder to an account once, and every session started there uses it.

Quick start — 60 seconds

1. Install (Node 20 or newer):

npm install -g @event4u/agent-switch

2. Add each account once. Each one opens the provider's normal sign-in in your browser:

agent-switch add work
agent-switch add personal

3. Turn it on. This adds the shell wrapper and the background service that keeps usage numbers fresh:

agent-switch shellenv install
agent-switch service install

Open a new terminal and run claude as always. It starts on the account with the most to give. Want to see it? Run agent-switch: the desktop app opens, with no installer needed.

Codex: add --provider codex to add. Already signed in to Claude Code? See keeping your current login.

What you get

Never log in twice

Each account gets its own folder with its own login, the way the provider intended. agent-switch only decides which folder the next session uses. It never copies, swaps or rotates a login. Nothing goes stale when you switch, and running sessions are never touched. With the background service, idle Claude logins are kept fresh without spending any quota.

Never waste a paid limit

With no folder rule, a new session is balanced across your accounts. It goes to the one that would lose the most of what is left at its next reset, so every plan gets used before it resets. An account at its limit is skipped. Folder rules pin a project to one account or to a group of accounts. Ask agent-switch dir --json for any folder, and it tells you which account it would pick and why.

See everything, move anything

The desktop app and its menu-bar popover show every account's limits, every running session with its context %, and the one thing that needs you next. Move a session to another account and continue it there (takeover). On macOS you can even switch the account of a session that is still running (rebind), right now or when its current turn ends.

With agent-config installed, your agent asks you in the session before a limit, and the app asks the same question. Answer once, in either place; Agent Switch moves the work. It also asks earlier when your accounts run at different paces — one would run out well before its reset while another would let room expire — so the limits last the whole run. See Working with agent-config.

How it fits together

Your logins stay yours

agent-switch is not a proxy and has no server, no account and no telemetry. Logins stay where the provider put them. Over the internet it only talks to:

• the provider's own usage endpoint, with your own login;
• GitHub, for releases and the desktop app download;
• npm, for update checks of agent-switch's tools (the desktop app checks the claude and codex CLIs).

It switches a running session only when you confirm. What agent-switch reads, stores and sends →

What works where

Antigravity accounts work with --provider antigravity. The desktop app shows Claude Code and Codex by default; show Antigravity there with agent-switch providers enable --provider antigravity. The core works on macOS, Linux and Windows, in zsh, bash, fish and PowerShell. The platform matrix lists every exception.

Everyday commands

asw                        # list your accounts (* = the one you prefer)
asw work                   # prefer "work" when the accounts are level
agent-switch run personal  # one session on "personal", whatever the balance says
agent-switch map work ~/code/client-a   # this folder always uses "work"
agent-switch status        # every account's limits
agent-switch doctor        # check the setup

The CLI reference lists every command.

Documentation

• Quick start: the three steps above, per shell and OS.
• Which account a session uses: folder rules, balanced starts and your preferred account.
• The desktop app: overview, sessions, notifications and the desktop pet.
• Move a session: take over, live switch and hand off.
• Troubleshooting & FAQ
• What agent-switch will never do: no proxy, no fingerprinting, no pooling of free tiers.

Update and uninstall

agent-switch update installs the latest version through npm. The desktop app updates itself. What changed in each version is in the release notes. agent-switch uninstall removes its profiles, their stored logins, the background service and the app launchers. Your default Claude Code, Codex and Antigravity installs are untouched. Remove the shellenv line from your shell's startup file yourself. Details →

Contributing

Issues and pull requests are welcome. To build from source:

npm ci && npm run build && npm link
npm test

The desktop app lives in gui/ (Tauri + React). The docs site lives in starlight/.

If agent-switch saves you a login or a wasted limit, a ⭐ on GitHub helps others find it.

License

MIT © event4u