Draft prepared by engineering — pending review by a lawyer before mainnet. It describes how arky works today, from its code, and will change before it is final. Text marked [to be completed: …] is information the operator has not supplied yet.
Fees
Draft of 24 September 2026
arky’s fees are set in its smart contracts, not on this page. The figures below are read live, from the same source the app uses; no percentage is written into this text. Every ticket also shows the fee before you sign.
Memecoin trading fee
Reading the live fee split from the chain…
Other fees
| Fee | When | Where it is set |
|---|---|---|
| Launch fee | When you launch a token | launchFee() |
| Prediction trading fee | Each prediction market buy or sell | tradeFeeBps() |
| Pool fee after graduation | Trades of a token after it leaves the bonding curve for its liquidity pool | poolFee() |
| Network (gas) fee | Every transaction, paid in USDC on Arc | The Arc network, not arky |
| Bridge or provider fees | Cross-chain deposits and sends | The bridge or deposit provider; shown in the quote |
The spot router arky uses for other assets charges no fee of its own.
Checking the figures yourself
Anyone can read the fees from the contracts on a block explorer or with a command-line tool such as cast call, without trusting this page:
| Contract | Address | Fee getters |
|---|---|---|
| Launchpad (memecoins) | 0x4aA550Cfc04F116daAa762708aD17e63740AC1a5 | tradeFeeBps() creatorFeeShareBps() launchFee() |
| Predictions | 0x2e1FcA81783c3FdB980fd76B10E50Fb30D1ABcCf | tradeFeeBps() |
| Graduator (pools) | 0x80413d95C9716e121A568264E022E14b6BF71A96 | poolFee() creatorFeeShareBps() |
The affiliate share is not held on-chain; it is the programme rule served by arky’s data service at /v1/referrals/program. See the affiliate programme.
Changes
The contract owner can change the memecoin and prediction trading fees and the launch fee. A change applies to transactions that execute after it, and is public on-chain as a TradeFeeUpdated or LaunchFeeUpdated event. The memecoin figures above follow it as soon as arky reads it. A graduated pool’s fee is fixed when the pool is created.