RamitVishwakarma / Janus

# Janus
A small macOS app for people who keep more than one Claude Code or Codex
account, and who have noticed how much disk the tools they use every day quietly
hold onto.
One click moves the live session, and the account it displaces is saved first.
It does three things, one tab each:
- **Switches Claude Code accounts.** Signing in as another account normally means
 signing out first and typing the whole thing again. Janus saves each
 account's session and puts it back on demand, so the second account is one click
 away instead of one login away.
- **Switches Codex accounts.** The same, for OpenAI's Codex, in a tab of its own.
 See Codex.
- **Clears developer caches.** A list of directories that are safe to delete,
 measured and shown with what each one costs to lose. Everything goes to the
 Trash rather than being deleted, so any decision can be taken back.
## Install
With Homebrew:
 [code] 
Or download the latest `.dmg` from
Releases, open it,
and drag Janus to Applications. The build is universal, covering Apple silicon
and Intel.
The app is signed ad-hoc rather than with a paid Apple Developer certificate, so
macOS quarantines it on first launch and says the developer cannot be verified.
`--no-quarantine` tells Homebrew to skip that flag. After a download by hand,
clear it once:
 [code] 
To have it start with the Mac, add it under System Settings → General → Login
Items, or:
 [code] 
### Build it yourself
Needs the Xcode Command Line Tools (`xcode-select --install`). Xcode itself is
not required.
 [code] 
## Using it
Janus cannot sign in for you, so the first account has to be signed in
already. Press **Save current account** and it is captured.
For the second: sign out of Claude Code, sign in as the other account, come back,
and press **Save current account** again. From then on both are in the list and
switching between them is one click, or `⌘S` from the menu bar.
The menu bar item shows which account is live. The window shows both accounts
with how much of their five-hour and weekly limits each has spent. That is the
number to look at when the decision you are making is *which account has room
left*.
## Where the usage figures come from
Claude Code asks Anthropic for your limits while a session is running and writes
the answer into its own settings file. Janus reads that file for nothing, which
is what every row shows to begin with. For the account that is signed in, those
figures are as current as your last session. For an account that is not, they
are whatever it had spent at the moment you switched away — frozen, and
increasingly wrong the longer it sits there.
**Refresh** goes and asks. It calls Anthropic's usage endpoint once per account,
with the tokens that account already has saved, and shows what comes back. That
is the only network request Janus makes for Claude, it goes nowhere but
`api.anthropic.com` and `platform.claude.com`, and nothing is sent that is not
the account's own credentials. The Codex tab's equivalent is descri