Before a swap on STONfi ever reaches the chain, it goes through a full preparation and validation cycle off chain. The interface or integrated app asks the STONfi backend and SDK for an exact route, expected output and a minimum acceptable result based on user settings. This step already filters out routes that do not respect basic constraints like pool depth or maximum hops.

The prepared transaction includes all these parameters directly in the contract call. During execution, the STONfi contracts and Omniston routes must match or exceed the quoted expectations. If pool states change in a way that breaks the quote, the transaction fails instead of silently delivering a worse result.
This workflow ensures that the on chain part of the swap is a controlled replay of the prepared decision rather than a fresh calculation. Integrators using the STONfi SDK do not have to re implement these checks, they simply forward the payload and rely on the protocol’s guarantees. $TON $DOGS