Claude Profiles
Keep several claude.ai accounts in one Chromium-based browser and switch between them in a click. Open a claude.ai link and the extension switches to the account that owns it. Scripts and coding agents can do the same through a small ccp command.
Why
If you use more than one Claude account (a personal one and one or two for work, or spare accounts for when a usage limit runs out), the browser gives you two bad choices: log out and in again every time, or run a separate browser profile per account and keep each one signed in to everything else too.
Claude Profiles saves each account's claude.ai session and swaps between them inside your normal browser. Everything else you are signed in to stays as it is.
What you get
- A popup listing your saved accounts with their status (Signed in, Expires soon, Signed out), a Switch button for each, and a toolbar badge counting signed-out accounts.
- Auto-swap for links. Open a claude.ai link to a Claude Code session, chat, project, artifact or shared page, and Claude Profiles finds the saved account that can see it, switches to it and reloads the tab. It remembers the answer, never loops, and has an off switch and a per-link opt-out. See docs/AUTO_SWAP.md.
- The
ccp command for scripts and agents: ccp list, ccp status, ccp switch <account>, ccp launch <account> --url <url>, ccp open-for <url>, ccp save, ccp doctor.
- Session checks: every saved account is checked when you open the popup and once an hour, without switching to it.
- Sign back in: an optional helper that signs expired accounts back in through their emailed login link (see docs/ONBOARDING.md).
Install in about a minute
You need macOS or Linux, Chromium, Google Chrome or Brave, Node 24 or newer, and git. Windows is not supported. No sudo is used anywhere.
One prompt. Open Claude Code (or another coding agent that can run shell commands) and paste the prompt in INSTALL_PROMPT.md. It installs everything, asks you to load the extension (the one step no script can do for you), then walks you through saving each of your accounts.
By hand.
curl -fsSL https://raw.githubusercontent.com/kranners/chromium-claude-profiles/main/install.sh | sh
install.sh finds Node, clones the repository into ~/.local/share/chromium-claude-profiles, links ccp into ~/.local/bin, installs the native messaging host for your browser and runs ccp doctor. It is safe to run again. Pass --browser chromium|chrome|brave if you have more than one, or --dry-run to see what it would do.
Then load the extension: in your browser open chrome://extensions, turn on Developer mode, choose Load unpacked and pick the extension/ folder inside the checkout (the installer prints the path and copies it to your clipboard). Open the Claude Profiles popup: the Agents line should say ccp can reach the browser. Run ccp doctor any time to check.
Next, save your accounts: see docs/ONBOARDING.md. In short: sign in to claude.ai, run ccp save; run ccp sign-in-another, sign in to the next account, run ccp save; repeat. Each account is saved under its email.
Limits, plainly
- One account is active at a time. The browser keeps cookies per profile, not per tab, so every claude.ai tab is on the same account. Two windows do not give you two accounts at once. A tab for account A and a tab for account B cannot both work at the same moment.
- Switching reloads your claude.ai tabs into the new account, auto-swap included. Unsent text in those tabs can be lost, so finish your message first.
- Agents take turns. If two scripts ask for different accounts at the same moment, the last switch wins.
- Claude in Chrome keeps its own login. Claude Profiles changes the claude.ai website session only. It does not change which account the Claude in Chrome extension is signed in to.
- Never log out of a saved account. Logging out revokes the session on Anthropic's side, and the saved copy stops working. To use another account, use "Sign in another account" in the popup or
ccp sign-in-another, which clears the tabs locally without logging out.
- Developer-mode (unpacked) extensions are not updated automatically. After
git pull, press Reload extension in the popup.
- Chrome's own
--load-extension flag no longer works in branded Chrome, which is why the extension has to be loaded by hand there.
Privacy
Everything stays on your machine. Saved sessions live in the extension's local storage in your browser profile, and auto-swap remembers only which of your own account labels owns which claude.ai link. The extension talks to ccp over a Unix socket in ~/.config/chromium-claude-profiles/run/ (directory mode 0700, socket 0600), so only your own user can use it. The optional HTTP API listens on 127.0.0.1 only and needs a bearer token. No debugging port is opened, cookie values are never logged or printed, and nothing is sent to any server other than claude.ai itself, to check each session. No analytics, no telemetry. See SECURITY.md.
The extension requests host access to claude.ai only, plus the cookies, nativeMessaging, storage, offscreen, alarms, scripting and declarativeNetRequestWithHostAccess permissions. It does not ask for tabs or access to any other site. docs/HOW-IT-WORKS.md says what each is for.
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