Countersign Prototype
Setup · your terms

Write your terms once. Every site gets them.

Pick what you’ll agree to. Countersign sends these terms to each site you visit and checks their fine print against them before you sign up.

Rights applied for California
How your terms travel
BINDING

Sent as a legal signal (GPC) or request. Sites in your state are required to honor it.

PROFFERED

Offered as your terms (IEEE 7012). A site can accept or ignore them, and we’ll show you which it did.

I’ll agree only if…

5 of 5 on

Everything is analyzed on this device. Your browsing history never leaves it. Countersign gives information, not legal advice.

Save my terms

Countersign is a design prototype. Every company, clause and date here is invented for demonstration, and nothing here is legal advice.