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hoodstar.fun has one of the simplest fee schedules in the launchpad space. Everything below is enforced on-chain.

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Summary

ActionFee
Launch a tokenFree (gas only)
Buy or sell on the bonding curve1% of the ETH amount
Graduation / migrationFree (permissionless, gas only)
Trade on Uniswap after graduation1% pool fee tier (standard Uniswap mechanics)
Claim creator or protocol feesFree (gas only)

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Bonding-curve trade fee: 1%

Taken in ETH on every buy and sell, and split:

Protocol — 0.7%

Accrues to the protocol treasury. Funds platform development and operations.

Creator — 0.3%

Accrues to the token creator’s claimable balance — see Creator Rewards.
Fees are pull-based: they accumulate in the launchpad contract and are paid out when claimed. Claim functions are callable by anyone, but funds only ever go to the registered recipient (the creator’s fee address, or the treasury).
Fee rates are adjustable by protocol governance within a hard-coded cap of 5% total — the contract physically cannot charge more. Current rates: 0.7% + 0.3% = 1%.

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After graduation: Uniswap v3 pool fees

Graduated tokens trade in a Uniswap v3 pool with the 1% fee tier. Those fees accrue to the pool’s liquidity — which is the position locked in the FeeLocker vault. Anyone can trigger a fee collection, which splits the harvest:
RecipientShare
Token creator50%
Protocol treasury50%
This split is immutable — set once at deployment and not adjustable by anyone.

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Gas

Every transaction pays Robinhood Chain gas in ETH. As an Arbitrum Orbit L2, gas costs are typically a tiny fraction of a cent to a few cents. There are no deposit, withdrawal, account, or subscription fees of any kind.

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Example: a 1 ETH buy

You send:            1.000 ETH
Fee (1%):            0.010 ETH   → 0.007 protocol · 0.003 creator
Goes into the curve: 0.990 ETH   → priced by x·y=k, tokens to your wallet
The trading widget always shows the fee and your exact minimum receive amount before you sign.