How do listing approvals work?

Before an item can be sold, your wallet grants the marketplace settlement contract permission to transfer items from that collection. This is an on-chain transaction, done once per collection per chain. The permission is granted to a contract, not to Unvault, and it is only exercised when a listing you signed is filled or an offer you accepted executes.

Good practice:

• Read the approval in your wallet before confirming; it should name the collection and the settlement contract.
• Revoke approvals for collections you no longer trade — see How do I revoke token approvals?.
• Never approve from a page that is not on unvault.com.