STON.fi goes cross-chain: TON x EVM swaps are live remains the main reference point for users and Telegram Mini App developers following this update.
STON.fi has enabled direct cross-chain swaps between TON and several major EVM networks, including Ethereum, Base, BNB Chain, and Polygon. This upgrade removes the need for third-party bridges or external swap interfaces—everything happens within the unified STON.fi dApp. For example, users can now swap USDC on Base directly for USDT on Ethereum in a single, guided flow.
This new swap capability is powered by STON.fi’s Omniston protocol. Omniston manages all cross-chain execution within the app, ensuring that users receive exactly the amount displayed in the swap UI. If the transaction cannot deliver the quoted output, it is cancelled and all funds are automatically returned to the sender. This approach is designed to eliminate slippage surprises and minimize transaction risks for both users and builders moving assets between TON and leading EVM chains.
How Cross-Chain Swaps Work on STON.fi
The cross-chain swap system works entirely within the STON.fi dApp. Users select their source and destination tokens and networks, and the protocol handles all backend complexity. There is no need to interact with external bridges or juggle multiple wallets.
Omniston acts as the engine behind these swaps, aggregating liquidity and executing trades across different blockchains. Swaps only process if the user will receive exactly the amount shown on the interface; otherwise, the swap fails harmlessly, and funds remain in the originating wallet.
Currently, this feature is available for wallet users wanting to swap supported tokens among TON, Ethereum, Base, BNB Chain, and Polygon. Token and chain support may expand in the future, but at launch, users should verify available pairings directly in the app.
Supported Networks and Token Pairings
STON.fi’s dApp connects TON, Ethereum, Base, BNB Chain, and Polygon, allowing users to swap tokens between any combination of these networks within the same interface. This significantly reduces the time, effort, and risk associated with previous cross-chain methods that depended on separate bridges or exchange platforms.
With this system, users can efficiently move tokens such as USDC or USDT across supported blockchains without splitting transactions, checking gas or bridge fees, or exposing assets to third-party risks. The process is designed for simplicity and reliability: either the swap goes through as displayed, or it does not happen and no assets leave your wallet.
For builders, this also means cross-chain liquidity access and swapping can now be integrated into Telegram Mini Apps and web interfaces directly via STON.fi—no custom bridge logic required. Token availability currently matches what STON.fi lists as supported, so users should always check the app for up-to-date options.
Omniston Protocol: Ensuring Secure and Predictable Cross-Chain Swaps
Omniston is central to the reliability of STON.fi’s cross-chain swaps. All routing, execution, and liquidity aggregation takes place within the dApp, with the protocol guaranteeing one of two outcomes: users either receive exactly the quoted amount in the swap interface, or the transaction is cancelled and their original funds are instantly refunded.
This rule helps safeguard users against common pitfalls like unexpected slippage, failed bridging operations, or partial executions. The system is built to make cross-chain asset movement as straightforward—and as safe—as possible for both first-time users and advanced traders.
While current support covers the main listed EVM chains and TON, expansion and deeper integration are anticipated. Technical details on issues like smart contract audits, external reviews, or handling of network outages have not been disclosed, so users may wish to begin with smaller transactions to confirm functionality before scaling up.
STON.fi’s direct TON to EVM swaps remove much of the friction and uncertainty from cross-chain DeFi activity. By routing everything through a single, easy-to-use interface, the complexity of bridging—and its associated risks—are significantly reduced.
The "exact amount or instant refund" policy introduced by Omniston stands out as a user-centric feature, offering a concrete layer of safety for anyone moving assets across chains.
For further tools and developments, see TON tools and DeFi.
STON.fi goes cross-chain: TON x EVM swaps are live remains the main reference point for users and Telegram Mini App developers following this update.
STON.fi goes cross-chain: TON x EVM swaps are live remains the main reference point for users and Telegram Mini App developers following this update.
Source reference: original source.