What a swap costs on Mantle
Gas is paid in MNT, not ETH. This catches people out constantly: you can hold a perfectly healthy ETH balance on Mantle and still be unable to transact, because the gas token is the chain native token.
Every swap has three separate recipients and FBT Swap is only one of them. Network gas is paid in MNT and goes to the chain itself. The pool fee sits inside the price you are quoted and goes to liquidity providers. The platform fee is 0.70% of the input. None of the three is taken out of another, and none of them changes after you sign.
Getting assets onto Mantle
The official Mantle bridge connects to Ethereum, and several exchanges support MNT and direct Mantle withdrawals. Bridge a small amount of MNT first, before you need it for gas on a transaction you actually care about.
Before moving a large amount, send a small test transfer and confirm it arrived on explorer.mantle.xyz. FBT Swap is non-custodial and cannot reverse, freeze or compensate a transfer sent on the wrong network — it never holds the funds, so there is nothing for it to return.
What to check before you sign
The modular data-availability design means the security assumptions are not identical to a rollup that posts everything to Ethereum. That is a reasonable trade, but it is a trade, and it is worth understanding before you park a large balance here.
Check three things every time: the network name your wallet is showing and chain ID 5000, the contract address of the token you are receiving, and the size of the approval you are granting. An unlimited approval stays live until you revoke it — it is a separate signature from the swap and deserves separate attention.
What this page does not promise
The rate you see is the best route among the venues queried at that moment, which is not the same as the best price available anywhere. Routing through an aggregator reduces exposure to sandwich attacks but does not make a public transaction immune to them, and FBT Swap does not forecast prices or recommend trades.
FBT Swap cannot audit token contracts you import yourself, cannot restore a lost recovery phrase and cannot reverse a confirmed transaction. The only official domain is fbtswap.ir and the only contact address is fbtswap@gmail.com; we never contact users first.