The new Domains, Actions, Emulation functionality in the Toncenter API is made to improve the overall UX of the TON ecosystem.

Products and services can show user-understandable actions (such as “Exchange 1,000 USDt to TON on DeDust DEX”) instead of raw transactions, show what happens before sending a message to the blockchain for the user's convenience and safety, and make greater use of TON and .t.me domains.