What things cost
Two fees. A flat 2 MNT to launch a token, and 1% on trades. That is the whole list.
Launching: 2 MNT
Flat, and the same whoever you are. It is charged whether or not you buy your own token in the launch transaction, so launching without buying still costs 2 MNT and nothing more.
You also pay gas, which goes to the network rather than to us. On Mantle a launch is around 714,000 gas.
Trading: 1%
Every buy and every sell on a curve pays 1% of what goes in. On a buy that is 1% of the MNT you spend. On a sell it is 1% of the proceeds. The figure you are quoted before signing is what you get after the fee, so the number on screen is the number that arrives.
That 1% splits in half:
| Share | Goes to | When |
|---|---|---|
| 0.5% | The token's creator | Claimable straight away |
| 0.5% | sismo.fun | Claimable straight away |
Fees accrue rather than being pushed to a wallet, so a recipient who cannot receive MNT can never block anyone else's trade. You claim when you want to. See claiming.
After graduation: still 1%
The Uniswap pool a graduation creates uses the 1% fee tier, so the rate does not change when a token leaves its curve. What changes is the plumbing: the pool credits the locked position instead of the launchpad crediting an account, and somebody has to call collect to turn that into a claimable balance. Anyone can make that call, including you.
The split stays the same, half to the creator and half to the platform.
What there is no fee for
Claiming what you are owed, beyond gas. Selling back to a curve pays the same 1% a buy does, with no exit penalty on top. There is no listing fee, no fee for graduating, and no subscription.