Session Key for Claude

One-click copy of your Claude.ai session key — masked view, dev-ready formats, QR transfer and an expiry countdown. 100% local.

Session Key for Claude grabs your own Claude.ai session key and hands it to you in whatever form you need — instantly, and without anything ever leaving your browser. It's a drop-in upgrade if you already copy your key into the Claude Usage Widget or any script that needs it: the default "Key" format is the exact raw value, so nothing in your workflow changes. Everything else is a bonus. WHAT YOU GET - One-click copy — open the popup, hit Copy. Done. - Keyboard shortcut — copy the key without even opening the popup (Ctrl+Shift+K, ⌘+Shift+K on Mac; remappable at chrome://extensions/shortcuts). - Masked by default — the secret middle of the key stays hidden until you click the eye, so it's safe to open on a shared screen. - Dev-ready formats — copy the raw key, an env var (CLAUDE_SESSION_KEY=…), a cookie string, or a ready-to-run cURL command. - Expiry countdown — the toolbar badge turns amber when your session is about to expire and red once it has, so you're never surprised by a logged-out tool. - QR transfer — move the key to your phone or another device by scanning, with a clear warning about who should see it. - 9 languages — English, Español, Français, Deutsch, Italiano, 日本語, Português (BR), 中文 (简体), हिन्दी. HOW TO USE 1. Log in to claude.ai in this browser. 2. Click the extension icon in your toolbar. 3. You'll see your session key (masked) and its expiry countdown. Click the eye to reveal the full key if you want to check it. 4. Pick a format — Key, Env var, Cookie, or cURL — then hit Copy. 5. Paste it wherever you need it: the Claude Usage Widget, a usage tracker, a script, or an API client. Prefer the keyboard? Press Ctrl+Shift+K (⌘+Shift+K on Mac) on any page to copy the key straight to your clipboard without opening the popup. The toolbar badge flashes ✓ to confirm. Remap the shortcut at chrome://extensions/shortcuts. Moving the key to another device? Click "Show QR" and scan the code with that device — but only one you trust, since the key grants access to your account. Not seeing a key? Make sure you're logged in to claude.ai, then click Retry. PRIVACY, PLAINLY The key is read from your browser only when you ask for it, and it is only ever placed on your clipboard or drawn as a QR code on your screen. There are no network requests, no analytics, and no remote code. It cannot work with any account but your own. Works with the Claude Usage Widget and any tool, script, or dashboard that needs your session key. Not affiliated with Anthropic.