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clutchbox

Your agents,already signed in

Clutchbox syncs your browser states to browsers your agents use. Choose the sites, and Claude, ChatGPT, Codex or your own agents start signed in, with no passwords, 2FA prompts or cookie exports.

Add to ChromeFor developers
Your agents’ browsersLast synced 2 minutes ago
Your browseragents’ browsersone way, in the background
Sign-inSigned in to your calendarsynced
You choose what syncs

How it works

In your browser

The extension

Syncs the sites you add, one way and in the background, each behind its own Chrome permission.

Add to Chrome

On our servers or yours

Your latest sign-ins

Encrypted at rest, kept current, and handed only to the agents and apps you connect.

Wherever your agents run

Their browsers

Playwright, browser-use, Stagehand or any Chrome over CDP, or a hosted computer for Claude, ChatGPT, Claude Code and Codex.

What it works with

What syncsSign-insFilescoming soonAppscoming soon

Open source

All of Clutchbox is open source under Apache-2.0: the extension, the sync format, the adapters and the web app. Read exactly what leaves your browser, or run the whole thing on your own servers.

Star on GitHubRead the security model

For your users’ agents

Building agents for other people? Your users connect Clutchbox once, with their consent, and your agents work signed in as them. Read each user’s latest sign-ins over the API and apply them to your own Playwright, browser-use or Stagehand browsers, or open one of our computers.

You bring the agent and the model. We keep it signed in.

Read the developer docs
Two women in 1949 reading rows of manometer tubes, under a board marked test 122, run 17, picture 1, reading 25
Computers copy pressure readings from manometer boards, NACA Lewis, 1949.

What it costs

A woman at her desk in 1951 looking up at two colleagues, a calculator beside her and her name on a plate at the desk’s edge
A computer’s desk with her name on it, NACA Langley, 1951.

  • Personal Free, with limits

    Sync for the agents you use, with a hosted computer for Claude, ChatGPT, Claude Code and Codex, within a monthly allowance.

  • Developer plans Coming soon

    For your users’ agents, priced per connected user, in your own browsers or on our computers.

  • Self-hosted Free, Apache-2.0

    The whole product for your organization, on your own servers.

    Self-host it

Frequently asked questions

How do I give an AI agent my logged-in sessions?

Add the Clutchbox extension to Chrome and choose the sites to sync. It copies their sign-ins in the background to the browsers your agents use, so they start signed in. You never share a password or export cookies by hand.

Which agents and browsers does it work with?

Claude, ChatGPT, Claude Code, Codex, and any agent that can use a remote MCP server, on a hosted computer we run. Your own code can apply the same sign-ins to Playwright, browser-use, Stagehand, or any Chrome over CDP.

What can my agent do on the hosted computer?

It’s a full Linux desktop with Chrome. Your agent can use the mouse and keyboard, run commands, drive the browser with CDP or Playwright, and hand you the files it makes. You can watch live and take over at any time. Agents act on your real accounts, so what they do on a site really happens.

Is it safe to sync my sign-ins?

You choose each site, and Chrome asks your permission for each one. You can pause sync, disconnect a browser, or delete everything from your account. Sync goes one way, so nothing an agent does comes back to your browser. The extension is open source, so you can read exactly what it sends.

Which sites stay signed in?

Sites like GitHub, Notion and X stay signed in. Some sites end copied sign-ins sooner, so they work while your browser keeps syncing, and a few tie sign-ins to your device, so they can’t be copied.

How do I use it in my own app?

Your users connect Clutchbox once and join your organization, which is their consent. Your servers then read each user’s latest sign-ins over a REST API with an organization API key and apply them with the open-source Playwright or CDP adapters, or open a hosted computer for them.

What does it cost?

Personal use is free, with 600 minutes of hosted computer time a month, and the computer pauses when your agent is idle. Self-hosting is free. Developer plans, for your users’ agents, are coming soon.

Can I run it myself?

Yes. All of Clutchbox is open source under Apache-2.0: the extension, the sync format, the adapters, and the web app your whole organization can use, on your own servers.

Start where you are

Your sign-ins, in place before your agents arrive.

Photographs via Wikimedia Commons: “NACA Computers Take Readings From Manometer Boards” by NASA Glenn Research Center; “NACA Laboratory Computers Help Compile Handbook” by NASA Langley Research Center, Bill Taub; both public domain. The status panel is a drawing of the product, not a screenshot.