What a swap costs on Base
Gas is paid in ETH and is typically a fraction of a cent, because Base posts its data cheaply. Fees still track Ethereum data costs, so a very busy day on Ethereum is visible here too, just scaled down.
Every swap has three separate recipients and FBT Swap is only one of them. Network gas is paid in ETH 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 Base
Direct withdrawal from Coinbase to Base is the cheapest and fastest route and avoids a bridge entirely. The canonical OP Stack bridge works from Ethereum, with the same multi-day challenge window on the way back out.
Before moving a large amount, send a small test transfer and confirm it arrived on basescan.org. 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
Base attracts a very high volume of newly launched tokens, and most of them are worth nothing within a week. The chain being reputable says nothing at all about the token you are about to buy on it.
Check three things every time: the network name your wallet is showing and chain ID 8453, 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.