Cross-Chain DeFi, Without the Chaos

STON.fi is significantly safer because it’s non-custodial — your funds never leave your wallet. Unlike centralized exchanges that control billions in user funds (and can restrict your access), STON.fi only facilitates swaps while you maintain complete control. Our smart contracts are open-source, professionally audited, and protected by bug bounty programs. Even if our interface goes offline, your funds remain safe in your wallet.

One swap replaces what fragmented tools charge separately — a bridge fee, a DEX fee on each side, and a withdrawal fee. Cross-chain swaps don’t require you to hold or spend gas on the EVM side. Network fees apply on TON and TRON — typically under $0.1 on TON — and every fee is shown in full before you confirm. There are no hidden fees, withdrawal limits, or subscription costs. Liquidity providers on TON earn swap fees, and farmers earn additional token rewards.

No — STON.fi is designed for both beginners and experts. Cross-chain swaps use the same interface as single-chain ones, so there’s nothing extra to learn, and no smart contract interaction to script yourself. We provide step-by-step tutorials, community support, and educational resources.

STON.fi does not require you to create an account or complete an in-app KYC process. Simply connect your wallet and start swapping immediately. This contrasts with centralized exchanges that impose restrictions, require identity verification, and can freeze accounts based on location or compliance issues.

Nothing is left stranded. Cross-chain swaps on STON.fi execute atomically through Omniston: either both parties receive the assets they agreed to, or the swap fails and every asset is refunded in full. There’s no intermediate state where your funds sit on a bridge contract waiting for a second leg that may never arrive — which is the single most common way cross-chain transfers go wrong when you assemble them from separate tools.

No. That’s the point. A swap from an EVM chain to TON, TON to TRON, or EVM to TRON happens in one flow inside STON.fi — no bridge contract to trust, no CEX deposit-swap-withdraw cycle with its verification steps and withdrawal queues, and no assets held by anyone but you at any point.

Yes — liquidity is available 24/7 through automated market makers on TON. You can exit positions anytime without waiting for counterparties or approval processes. Some farming positions may have lock-up periods for maximum rewards, but basic liquidity provision allows instant withdrawal. Always check specific pool terms before entering positions.

Each supported network handles congestion differently, and the fee and time estimate you see before confirming reflects current conditions on both sides of the swap. Slippage protection is built in, and you can set maximum slippage tolerance for each swap. During extreme volatility, we recommend monitoring positions more closely.

Since STON.fi is non-custodial, your funds remain in your wallet even if the interface faces issues. The smart contracts are designed to continue operating independently. Multiple front-end interfaces can access the same protocols, ensuring continuous availability. Our open-source nature means the community can maintain and improve the project indefinitely.

When you provide liquidity to pools, you earn a percentage of all swap fees generated by that pool. Additionally, many pools offer token farming rewards distributed automatically via smart contracts. Rewards are calculated in real-time and displayed in your interface. Current rewards depend on pool selection and market conditions.

Farming rewards are distributed through smart contracts automatically. Rewards are calculated based on your share of the total liquidity pool and the time you’ve provided liquidity. Our interface shows real-time reward calculations and projected rewards. You can claim rewards at any time.

Liquidity providers receive fees from swaps, typically around 0.2% per transaction, though this varies by pool. Many pools also offer additional farming rewards through token distributions.

Rewards depend on several factors:

• Swap volume in your chosen pool
• The specific fee structure (check individual pool details)
• Available farming programs and their reward rates
• Market conditions and pool composition

Always check the current rates and terms on our Pools page before providing liquidity.

Each pool displays its specific fee structure, current reward rates, and any additional farming opportunities.

Remember: past performance doesn’t guarantee future results, and higher potential rewards typically involve higher risks.

All farming programs on STON.fi are verified and run through audited smart contracts. The community actively discusses and evaluates opportunities. We provide transparency tools showing pool metrics and additional information on the pools and tokens with the info labels. Start with established pools and gradually explore newer opportunities as you build experience and confidence.

Impermanent loss occurs when token prices in a pool change relative to each other. Generally, stable pairs (like USDt/USDe) have minimal impermanent loss, while volatile pairs have higher risk but also higher potential rewards. You can monitor your positions in real-time.

Currently, many TON DeFi protocols do offer higher rewards than established chains due to several factors: fewer participants competing for rewards, protocol incentives to attract early liquidity, and the developing stage of the ecosystem.

However, these rates typically adjust over time as more capital enters and the market matures. Always evaluate current rates on individual pools and consider that higher rewards often come with additional risks in newer ecosystems.

The key is to start small and do your own research. Begin with smaller positions to understand how different pools and strategies work before committing significant amount of tokens.

Risk management best practices:

• Research each pool thoroughly before entering
• Start with small amounts to learn the dynamics
• Monitor your positions regularly using available on-chain data
• Understand impermanent loss risks for each pair
• Diversify across different pool types and risk levels
• Keep detailed records of your positions and performance

Always do your own research (DYOR) on pool composition, swap volumes, and associated risks. As you gain experience and confidence with smaller positions, you can gradually scale up your strategy.

Non-custodial means your private keys never leave your wallet, and STON.fi never has access to your assets. When you swap or provide liquidity, you’re interacting directly with smart contracts while maintaining full control of your assets — including on cross-chain swaps, where each leg is signed by you and nothing is custodied in between.

Unlike centralized exchanges that hold your assets in their wallets, STON.fi only provides an interface for transactions. Your tokens remain in your wallet until the moment you choose to execute a transaction, and you must personally sign every action. Even if STON.fi's website goes offline, your funds stay safe in your wallet and the smart contracts continue operating independently.

STON.fi employs multiple layers of smart contract security:

Professional audits: Our smart contracts have been audited by Trail of Bits, a leading blockchain security firm, with all audit reports publicly available.

Bug bounty programs: We maintain active bug bounty campaigns with Certik and HackenProof, rewarding security researchers who find vulnerabilities.

Open source code: STON.fi's smart contracts on TON are publicly verifiable on-chain, allowing community review and verification.

Built-in protections: Smart slippage protection, gas estimation, and transaction previews help prevent costly mistakes.

Formal verification: Critical components use mathematical verification methods to ensure code behaves as intended.

STON.fi's smart contracts on TON are fully open source and independently verifiable:

On-chain verification:
• Visit our Tonviewer explorer page to see live smart contract addresses
• Review the contract code directly on the TON blockchain
• Check transaction history and contract interactions

Code review:
• Access our codebase on GitHub
• Compare deployed contracts with published source code
• Review commit history and development activity

Audit reports:
• Download third-party audit reports
• Review findings and how issues were addressed
• Check audit firm credentials and methodologies

Technical users can also run their own analysis tools or fork our code for independent review.

Since STON.fi is non-custodial, wallet recovery depends entirely on your wallet’s backup methods, not STON.fi:

Prevention is key:

• Always backup your seed phrase/private keys securely
• Store backups in multiple secure locations
• Never share your seed phrase with anyone
• Consider using hardware wallets for large amounts

If access is lost:

• STON.fi cannot recover your wallet or tokens
• Use your wallet’s recovery methods (seed phrase, private key backup)
• Contact your wallet provider’s support for recovery assistance
• Your tokens remain on the blockchain—recovery restores access, not the assets themselves

Best practices:

• Test your backup recovery process with small amounts first
• Keep backup information offline and secure
• Consider multi-signature setups for enhanced security

Yes, STON.fi supports hardware wallets that are compatible with TON:

Supported hardware wallets:

• Ledger devices (with Tonkeeper app installed)
• Other TON-compatible hardware wallets
• Cold storage solutions that support TON

Security benefits:

• Private keys remain on the hardware device
• Transaction signing happens on the secure hardware
• Combines STON.fi's non-custodial design with hardware-level security

Check your hardware wallet manufacturer’s documentation for specific TON compatibility and setup instructions.

STON.fi supports swaps in any direction between TON, TRON, and major EVM-compatible chains — TON↔EVM, TON↔TRON, and EVM↔TRON. Pools, farming, and staking run on TON.