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Swapping exchanges one token for another using RivrDEX’s automated market maker (AMM). The AMM prices every trade using the constant product formula — no order book, no counterparty required.

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How swaps work

When you submit a swap, RivrDEX:
  1. Calculates the output amount based on the current pool reserves and the constant product formula (x * y = k).
  2. Deducts a 0.35% fee from your input amount — the pool’s liquidity providers earn 0.3% of it.
  3. Updates the pool reserves, which shifts the price for the next trade.

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Fees

RivrDEX runs on Vara Network, which means near-zero network fees. In practice, the only cost that matters is the 0.35% swap fee, deducted from your input token. Your first swap’s network fee is covered entirely by a voucher.

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Slippage tolerance

Slippage is the difference between the price you see when you submit a swap and the price at which it executes. It happens because other transactions can change pool reserves between when you submit and when your swap lands on-chain. You can set a slippage tolerance — the maximum price movement you’ll accept before the trade reverts automatically.
Setting slippage too low causes trades to fail when prices move even slightly. Setting it too high means you may receive significantly less than expected. Start with 0.5%–1% for most swaps.

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Price impact

Price impact is how much your trade moves the pool price. Larger trades relative to pool size cause higher price impact — you push the price against yourself as you buy or sell. RivrDEX shows your estimated price impact before you confirm. If it’s high:
  • Consider splitting your trade into smaller chunks.
  • Wait for more liquidity to enter the pool.
  • Accept the impact if the trade is still worthwhile at that price.
Trades with price impact above 5% will be flagged in the UI. Proceed only if you understand the effective price you’re receiving.

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How to swap

1

Open the swap interface

Go to app.rivrdex.io and select Swap from the navigation.
2

Select your input token

Click the token selector in the From field and choose the token you want to sell. Enter the amount you want to swap.
3

Select your output token

Click the token selector in the To field and choose the token you want to receive. The estimated output amount updates automatically.
4

Review the trade details

Check the following before confirming:
  • Exchange rate — how many output tokens per input token
  • Price impact — how much your trade moves the pool price
  • Minimum received — the least you’ll get after slippage
  • Fee — 0.35% of your input amount
5

Adjust slippage if needed

Click the settings icon to set your slippage tolerance. The default is 0.5%.
6

Confirm the swap

Click Swap, then approve the transaction in your wallet. Your output tokens arrive in your wallet once the transaction is confirmed.