In any given Relay there are four potential fees:
  1. Execution Fees Fees to cover execution costs including network gas on the origin and/or destination chain.
    • Fill gas estimate (and origin gas estimate for gasless transactions)
    • $0.02 flat fee
  2. Swap Fees Fees to liquidity providers that facilitate cross-asset and cross-chain token swaps.
    • DEX fees
    • DEX swap impact
    • Solver cross-chain rebalancing fees
  3. Relay Fees Fees charged for using the Relay API gateway and related services.
    • 20% of swap fee
  4. App Fees Fees added on top of a Relay by you, the integrator.
If you are interested in learning how app fees work, and how you can add them to your quotes please check out our App Fees Doc.

Please note that the above fee structure applies to standard cases. In certain cases, such as route-specific campaigns or promotions, different fees may apply.

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Fees Object

The Fees object is returned from the quote API and the requests API. These fees are only the Relay related fee, and are segmentated as the following fees: relayerService: The service fee paid to the relayer to facilitate execution. relayerGas: The gas fee given to the solver to pay gas fees on the destination chain. relayer: The sum of the relayerService and the relayerGas. app: Third party fees added on top of the existing fees, this fee is added by app developers and accrues offchain to minimize gas costs. subsidized: The Fees in the order that are subsidized by the integrator.

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Price Impact

If you are interested in understanding or showing your user the fees of the order more broadly, it’s best to look at the expanded price impact object which reports: execution - the price impact that results from execution fees. swap - the price impact that results from cross-currency and cross-chain token exchange relay - the price impact that results from the relay api fee (if applicable) app - the price impact that results from the app fees (if applicable)