aiwitch

Switch between multiple AI CLI accounts and profiles in a single shell. Today: Codex and Claude Code. Built so more providers slot in without rewriting the CLI surface.

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Table of Contents

• Quick start
• Why
• Requirements
• Key features
• Install
• Shell setup
• How it works
• Usage
• Configuration
• Roadmap
• License

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Quick start

# Install via Homebrew (macOS)
brew install baedonguri/tap/aiwitch

# Enable in-shell switching (add to ~/.zshrc; bash/fish similar — see Shell setup)
eval "$(aiwitch shell init zsh)"

# Add profiles (registers and runs the provider's login flow)
aiwitch add codex personal       # ChatGPT login by default
aiwitch add codex work
aiwitch add claude personal      # spawns `claude`; run `/login` inside the REPL

# Switch the current shell to a profile
aiwitch use personal

# Then run the provider's CLI with that profile's account
codex     # or `claude`

aiwitch add <provider> <profile> triggers the provider's login flow for the new profile. Codex supports --auth api for API-key login (see Login); Claude is interactive-only — log in via /login inside the spawned claude TUI.

Why

Running multiple AI CLI accounts — personal, work, an API-key-only sandbox — means juggling CODEX_HOME / CLAUDE_CONFIG_DIR and shuffling auth files by hand. aiwitch keeps each account in its own home directory and switches the active one in your current shell with a single command.

Inspired by nvm/pyenv-style version switchers, applied to AI CLI accounts.

Requirements

• macOS or Linux with Rust 1.85+ (Windows is not supported in v0.1.0)
• Homebrew on macOS, if you want the brew install path
• Codex CLI and/or Claude Code installed and on PATH (only the providers you intend to use)
• For Codex API-key login: an OpenAI API key on stdin ($OPENAI_API_KEY or piped)

Key features

• Per-profile provider home — every profile has an isolated directory (CODEX_HOME for Codex, CLAUDE_CONFIG_DIR for Claude); switching is a single env-var swap. See How it works.
• In-shell switching — aiwitch use <profile> and aiwitch add <provider> <profile> mutate the current shell via a small snippet for zsh, bash, and fish.
• Two Codex auth modes — ChatGPT login and API-key login; the latter reads the key from stdin and pipes it straight to codex without aiwitch persisting it.
• Claude interactive login — aiwitch add claude <profile> provisions an isolated CLAUDE_CONFIG_DIR and spawns the claude TUI; users log in via /login inside the REPL.
• TOML config — a single ~/.config/aiwitch/profiles.toml with strict name validation and duplicate detection.
• Backend trait — adding a new provider is a Backend impl, not a CLI rewrite.

Install

macOS — Homebrew

brew install baedonguri/tap/aiwitch

After tapping once:

brew tap baedonguri/tap
brew install aiwitch

From source (macOS / Linux)

Requires Rust 1.85+.

cargo install --git https://github.com/baedonguri/aiwitch --tag v0.2.0

Shell setup

aiwitch switches profiles by exporting environment variables in the current shell, so it needs a small shell function.

# zsh — add to ~/.zshrc
eval "$(aiwitch shell init zsh)"

# bash — add to ~/.bashrc
eval "$(aiwitch shell init bash)"

# fish — add to ~/.config/fish/config.fish
aiwitch shell init fish | source

This wires up two extra subcommands:

Command	What it does
aiwitch use <profile>	Switch the current shell to an existing profile.
aiwitch add <provider> <profile>	Add a profile, run its login flow, and activate it in the current shell.

Without shell init you can still drive everything manually via eval "$(aiwitch env <profile>)".

How it works

Each provider picks up its account from a directory pointed to by an environment variable — CODEX_HOME for Codex, CLAUDE_CONFIG_DIR for Claude Code. aiwitch keeps one such directory per profile and exposes them as named entries in ~/.config/aiwitch/profiles.toml.

~/.codex-work/             ← CODEX_HOME for codex/"work"
  └── auth.json
~/.codex-personal/         ← CODEX_HOME for codex/"personal"
  └── auth.json
~/.claude-personal/        ← CLAUDE_CONFIG_DIR for claude/"personal"
  └── (managed by Claude Code; on Linux a `.credentials.json` lives here)

aiwitch use <profile> evaluates to export <PROVIDER_VAR>=... and export AIWITCH_CURRENT=... (or set -gx on fish). The next codex / claude invocation picks up the right account; aiwitch current reads AIWITCH_CURRENT. No background daemon, no symlink swapping, no global state to corrupt.

macOS note for Claude profiles: Claude Code stores OAuth credentials in the system Keychain on macOS, not inside CLAUDE_CONFIG_DIR. aiwitch list will show email=-, plan=-, expires=- for Claude profiles even after a successful login — that's expected, not a bug. On Linux, CLAUDE_CONFIG_DIR/.credentials.json is parsed best-effort.

Usage

Add a profile

aiwitch add <provider> <profile> registers the profile and immediately runs the provider's login flow. The provider is required; supported values are codex and claude.

aiwitch add codex personal                                    # Codex ChatGPT login
echo "$OPENAI_API_KEY" | aiwitch add codex work --auth api    # Codex API-key login (stdin)
aiwitch add claude personal                                   # Claude — spawns `claude` TUI; run `/login`

Flag	Meaning
--home <PATH>	Directory used as the provider home. Optional; defaults to ~/.codex-<profile> (codex) or ~/.claude-<profile> (claude).
--auth <chatgpt|api>	Codex only. Login mode; defaults to chatgpt. Rejected with an explicit error for claude (Claude is interactive-only).

If login fails or is canceled, the profile is still registered. Retry with aiwitch login <profile> (add --api-key for API-key mode).

List profiles

aiwitch list

Shows each profile's name, provider, email, plan, and token expiry. The active profile (per provider) is marked.

Switch profiles

Requires shell setup — aiwitch use is a shell function, not a binary subcommand.

aiwitch use work
aiwitch current   # → work

Run a one-off command under a profile

aiwitch run <profile> -- <cmd> spawns <cmd> with the profile's provider env vars set, without mutating the current shell. The -- separator is recommended so flags are passed to the child instead of consumed by aiwitch.

# Current shell stays on `personal`; just this codex invocation runs as `work`.
aiwitch run work -- codex exec "fix this bug"

# Useful in CI / scripts where `eval "$(aiwitch env ...)"` is awkward.
aiwitch run ci-bot -- codex --version

The child inherits the parent environment and aiwitch overlays only CODEX_HOME / CLAUDE_CONFIG_DIR and AIWITCH_CURRENT. Other variables are not stripped — if OPENAI_API_KEY or ANTHROPIC_API_KEY are exported in your shell, the provider CLI may use them instead of the profile's stored credentials. To run with a cleaner environment, use standard tools:

env -u OPENAI_API_KEY aiwitch run work -- codex   # drop one variable
env -i HOME="$HOME" PATH="$PATH" aiwitch run work -- codex   # nuke everything else

The exit code of <cmd> is propagated; on Unix, signal-terminated children are reported as 128 + signal.

Diagnose health

aiwitch doctor

Reports per-profile status (home dir, login, token expiry) and global checks (provider CLI on PATH, AIWITCH_CURRENT). Exits non-zero on any [err]; warnings don't affect the exit code.

Login

# Codex — ChatGPT login (delegates to codex)
aiwitch login work

# Codex — API key login: aiwitch reads the key from stdin and pipes it to codex.
# aiwitch itself never persists the key.
echo "$OPENAI_API_KEY" | aiwitch login work --api-key

# Claude — interactive only: spawns `claude`; log in via `/login` inside the REPL.
aiwitch login claude-personal

aiwitch login <claude-profile> --api-key is rejected with an explicit error before stdin is read; Claude does not yet have an API-key login flow.

Print env without sourcing

aiwitch env work               # POSIX: export K='v'
aiwitch env work --shell fish  # fish:   set -gx K 'v'

Configuration

Profiles are stored in ~/.config/aiwitch/profiles.toml:

[[profiles]]
name = "work"
backend = "codex"
home_dir = "~/.codex-work"

[[profiles]]
name = "personal"
backend = "codex"
home_dir = "~/.codex-personal"

[[profiles]]
name = "claude-personal"
backend = "claude"
home_dir = "~/.claude-personal"

The file is validated on every load: names must be [A-Za-z0-9_-]+ (no leading dash), and duplicate names are rejected.

Roadmap

• More providers (Gemini, …) behind the existing Backend trait.
• Prebuilt Homebrew bottles to skip the Rust build step.
• Optional encrypted secret storage (today aiwitch does not store secrets — they live in the provider's own home dir).

License

MIT