Upgrade your account to Claude Max 20x
Enter the key you purchased along with your Claude sessionKey. The upgrade attaches to your own account in minutes.
Enter your details
Takes about a minute
Where's my sessionKey?
Copy it from claude.ai
- 1
Log in to Claude on a desktop browser
Open claude.ai in Chrome, Edge, or Firefox on your computer and sign in to your account.
- 2
Open Developer Tools
Right-click anywhere on the page and choose “Inspect” — or just press F12 — to open your browser's Developer Tools.
- 3
Head to Application → Cookies
In the Developer Tools top bar, open the “Application” tab (it's “Storage” in Firefox). In the sidebar, expand “Cookies” and select https://claude.ai.
- 4
Find the “sessionKey” cookie
Scroll the list of cookies until you spot sessionKey. Double-click its Value, select everything, and copy it.
- 5
Paste it into Clauder
Come back here, paste the value into the sessionKey field, add the key you purchased, and hit Upgrade.
Your sessionKey is like a password for your Claude session — only ever paste it into a form you trust. Clauder sends it straight to the upgrade service over a secure connection and never stores it.