A field tool for Claude Code

One account per terminal, switched with a keystroke

Personal in one terminal, work in another, a client in a third, all signed in at the same time. Switching takes one command. Your current login is already the defaultprofile, so there's nothing to set up.

Install ccenv

One shell, multiple accounts

zsh

$ ccenv list
● default    johndoe@gmail.com       max
  work       me@company.com          team
  client     not signed in

● = active in this shell

The problem

Switching accounts meant logging out, which clobbers the one login you had.

Claude Code keeps one active login. Add a work account or a client and you're signing in and out all day, losing the session you were in. ccenv makes accounts concurrent, not just switchable: every terminal stays on its own account, with no interference.

What it does

Two terminals. Two live accounts. Zero clobbering.

A · Per-shell isolation

Each terminal is its own account.

use changes only the current shell. run scopes a single session and leaves the shell untouched after.

Each profile keeps its own credential-store entry. Sessions running side by side never touch each other's tokens.

B · Credential handling

Tokens stay in the OS keychain.

ccenv doesn't store secrets. Tokens live in macOS Keychain (or a per-profile credentials file on Linux and Windows), managed by Claude Code through claude auth.

~/.ccenv is 0700, config copies are 0600. Nothing phones home, nothing lands in a flat file.

Terminal A

$ ccenv use work
$ claude
# runs as work

Terminal B — same moment

$ ccenv use default
$ claude
# runs as personal

Terminal C — one-off

$ ccenv run client \
  -- -p "summarize this repo"
# shell untouched

How it works

One config dir per account. That's the whole trick.

i
Each profile gets its own config directory; ccenv points Claude Code at it through the CLAUDE_CONFIG_DIR environment variable.
ii
Because Claude Code keys credentials by config dir, two terminals on two profiles are two fully live accounts, with no clobbering.
iii
Your plugins, skills, commands, hooks and CLAUDE.md are symlinked into every profile; mutable config is copied so concurrent accounts never race.
iv
Your existing ~/.claude is the default profile. There's nothing to migrate.

Reference

A small CLI you'll remember.

ccenv commands
ccenv use <name>	Rebind the current shell to an account (needs shell integration).
ccenv run <name>	Launch a one-off session on an account.
ccenv list	Show every profile; ● marks the active shell.
ccenv current	Print the account this shell is on.
ccenv create <name>	Make a new profile; it inherits your setup.
ccenv login <name>	Sign a profile in via claude auth.
ccenv sync <name>	Re-copy settings.json / mcp_config.json and re-link any missing shared assets.
ccenv doctor	Health-check the CLI, credential store and integration.
ccenv rename <a> <b>	Rename a profile (guarded).
ccenv remove <name>	Delete a profile (guarded; refuses default).
ccenv update	Fetch the latest build from ccenv.dev and swap it in.
ccenv uninstall	Remove ccenv itself; --purge also deletes every profile.

use and unuse run through the shell integration the installer adds to your rc; open a new terminal (or re-source it) once after installing. ccenv help full prints the complete reference, including create options like --isolated and --no-login.

Security

It holds none of your secrets.

Stores zero secrets

Auth is delegated entirely to claude auth. Tokens stay in the OS credential store; ccenv never reads, writes or holds them.

Guarded removal

A profile path must be a real directory under $HOME, with no .. and no symlinks, before anything is deleted. default is never removable.

Injection-safe setup

Shell-rc edits are upserted atomically and profile names are restricted. Implementation: rc lines are built with printf %q; new dirs are created 0700, files 0600.

Tells you what's wrong

doctor checks the claude CLI, the credential store, shell integration, per-profile sign-in and broken links.

Install

One line. Done.

Your current login becomes the default profile automatically. Create a second profile, open another terminal, and both accounts run side by side.

$ curl -fsSL https://ccenv.dev/install.sh | bash

No clone, no build step. Needs Claude Code and curl on your PATH. macOS, Linux, Windows via Git Bash or WSL. Per-user, no sudo; re-run any time to update.