Fees & Limits
A complete reference for all fees, minimums, and constraints in SillySwap.
Fees
Trading Fees
SillySwap does not charge its own trading fee. You pay Silhouette's spot fee, which is fetched live from the Silhouette API on every swap.
- Silhouette executes swaps on Hyperliquid spot
- The fee inherits Hyperliquid's spot taker / maker rates
- Silhouette's aggregated HYPE staking tier discount is applied on top
- The exact rate is always shown in the swap review screen before you confirm
Because the rate is dynamic - it depends on Silhouette's current staking tier and Hyperliquid's volume tier - this page deliberately does not list a fixed percentage. The number you see in the app is the number you pay. The app also shows you how much you're saving versus a Binance VIP 0 spot taker (0.10%).
For multi-hop swaps, fees compound across each leg. The review screen shows the total compound fee.
Deposit & Withdrawal Fees
| Operation | Fee |
|---|---|
| Deposit to Silhouette | Free (gas only) |
| Withdraw from Silhouette | Free |
Deposits require a standard Arbitrum gas fee (typically a few cents). Withdrawals are processed by Silhouette at no additional cost.
Gas Fees
- Deposits: You pay Arbitrum gas for the on-chain deposit transaction (usually < $0.10)
- Swaps: No gas — swaps execute within Silhouette's shielded pool
- Withdrawals: No gas from your side — Silhouette handles the on-chain transaction
- Authentication: No gas — signing is a gasless message signature
Order Limits
Minimum Order Size
| Limit | Amount | Enforced By |
|---|---|---|
| Minimum swap/buy | $10 USD | Hyperliquid |
Orders below $10 are rejected.
Deposit Limits
All supported tokens can be deposited and withdrawn. Subject to standard Arbitrum gas for deposits. No additional fees.
Withdrawal Limits
Withdrawals are limited to your full shielded balance per token. No minimum withdrawal amount beyond what Silhouette requires.
Network
| Detail | Value |
|---|---|
| Network | Arbitrum One |
| Chain ID | 42161 |
| Supported tokens | USDC, HYPE, USDH, BTC, ETH, SOL, ZEC, USDT, FART, PUMP, USDe, PURR, XAUT, KNTQ, KHYPE |
SillySwap only operates on Arbitrum. Your wallet must be connected to Arbitrum One for deposits and withdrawals.
Session
| Detail | Value |
|---|---|
| Authentication method | Gasless wallet signature |
| Session duration | Expires periodically (re-sign ~daily) |
| Cost to authenticate | Free |