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Merged
mgrabina merged 1 commit into from
Jan 15, 2026
Merged

zero fees for debt swaps #2836

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6 changes: 5 additions & 1 deletion ...mponents/transactions/Swap/actions/CollateralSwap/CollateralSwapActionsViaCoWAdapters.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -198,7 +198,11 @@ export const CollateralSwapActionsViaCowAdapters = ({
kind: state.processedSide === 'buy' ? OrderKind.BUY : OrderKind.SELL,
validTo,
slippageBps: state.orderType == OrderType.MARKET ? Number(state.slippage) * 100 : undefined,
partnerFee: COW_PARTNER_FEE(state.sellAmountToken.symbol, state.buyAmountToken.symbol),
partnerFee: COW_PARTNER_FEE(
state.sellAmountToken.symbol,
state.buyAmountToken.symbol,
state.swapType
),
};

const orderToSign = getOrderToSign(
Expand Down
6 changes: 5 additions & 1 deletion src/components/transactions/Swap/actions/DebtSwap/DebtSwapActionsViaCoW.tsx
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Expand Up @@ -220,7 +220,11 @@ export const DebtSwapActionsViaCoW = ({
quoteId: isCowProtocolRates(state.swapRate) ? state.swapRate?.quoteId : undefined,
validTo,
slippageBps: state.orderType == OrderType.MARKET ? Number(state.slippage) * 100 : undefined,
partnerFee: COW_PARTNER_FEE(state.sellAmountToken.symbol, state.buyAmountToken.symbol),
partnerFee: COW_PARTNER_FEE(
state.sellAmountToken.symbol,
state.buyAmountToken.symbol,
state.swapType
),
};

const orderToSign = getOrderToSign(
Expand Down
6 changes: 5 additions & 1 deletion ...onents/transactions/Swap/actions/RepayWithCollateral/RepayWithCollateralActionsViaCoW.tsx
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Expand Up @@ -218,7 +218,11 @@ export const RepayWithCollateralActionsViaCoW = ({
quoteId: isCowProtocolRates(state.swapRate) ? state.swapRate?.quoteId : undefined,
validTo,
slippageBps: state.orderType == OrderType.MARKET ? Number(state.slippage) * 100 : undefined,
partnerFee: COW_PARTNER_FEE(state.sellAmountToken.symbol, state.buyAmountToken.symbol),
partnerFee: COW_PARTNER_FEE(
state.sellAmountToken.symbol,
state.buyAmountToken.symbol,
state.swapType
),
};

const orderToSign = getOrderToSign(
Expand Down
7 changes: 6 additions & 1 deletion src/components/transactions/Swap/actions/SwapActions/SwapActionsViaCoW.tsx
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Expand Up @@ -184,6 +184,7 @@ export const SwapActionsViaCoW = ({
smartSlippage,
appCode,
state.orderType,
params.swapType,
state.swapRate.quoteId
);
const txWithGasEstimation = await estimateGasLimit(ethFlowTx, state.chainId);
Expand Down Expand Up @@ -218,6 +219,7 @@ export const SwapActionsViaCoW = ({
appCode,
orderType: state.orderType,
validTo,
swapType: params.swapType,
});
const calculatedOrderId = await calculateUniqueOrderId(state.chainId, unsignerOrder);

Expand All @@ -230,7 +232,8 @@ export const SwapActionsViaCoW = ({
slippageBps,
smartSlippage,
state.orderType,
APP_CODE_PER_SWAP_TYPE[params.swapType]
APP_CODE_PER_SWAP_TYPE[params.swapType],
params.swapType
)
),
state.chainId
Expand Down Expand Up @@ -286,6 +289,7 @@ export const SwapActionsViaCoW = ({
appCode,
orderBookQuote: state.swapRate?.orderBookQuote,
orderType: state.orderType,
swapType: params.swapType,
kind:
state.orderType === OrderType.MARKET
? OrderKind.SELL
Expand Down Expand Up @@ -331,6 +335,7 @@ export const SwapActionsViaCoW = ({
slippageBps,
smartSlippage,
orderType: state.orderType,
swapType: params.swapType,
kind:
state.orderType === OrderType.MARKET
? OrderKind.SELL
Expand Down
30 changes: 25 additions & 5 deletions src/components/transactions/Swap/constants/cow.constants.ts
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Expand Up @@ -145,10 +145,29 @@ export const COW_PROTOCOL_ETH_FLOW_ADDRESS_BY_ENV = (env: CowEnv) => {
export const COW_CREATE_ORDER_ABI =
'function createOrder((address,address,uint256,uint256,bytes32,uint256,uint32,bool,int64)) returns (bytes32)';

export const COW_PARTNER_FEE = (tokenFromSymbol: string, tokenToSymbol: string) => ({
volumeBps: getAssetGroup(tokenFromSymbol) == getAssetGroup(tokenToSymbol) ? 15 : 25,
recipient: COW_EVM_RECIPIENT,
});
const DEFAULT_PARTNER_FEE_SAME_GROUP_BPS = 15;
const DEFAULT_PARTNER_FEE_CROSS_GROUP_BPS = 25;
const PARTNER_FEE_BPS_BY_SWAP_TYPE: Partial<Record<SwapType, number>> = {
[SwapType.DebtSwap]: 0,
};

export const COW_PARTNER_FEE = (
tokenFromSymbol: string,
tokenToSymbol: string,
swapType?: SwapType
) => {
const swapTypeBps = swapType !== undefined ? PARTNER_FEE_BPS_BY_SWAP_TYPE[swapType] : undefined;

const defaultBps =
getAssetGroup(tokenFromSymbol) == getAssetGroup(tokenToSymbol)
? DEFAULT_PARTNER_FEE_SAME_GROUP_BPS
: DEFAULT_PARTNER_FEE_CROSS_GROUP_BPS;

return {
volumeBps: swapTypeBps !== undefined ? swapTypeBps : defaultBps,
recipient: COW_EVM_RECIPIENT,
};
};

export const FLASH_LOAN_FEE_BPS = 5;

Expand All @@ -159,6 +178,7 @@ export const COW_APP_DATA = (
smartSlippage: boolean,
orderType: OrderType,
appCode: string,
swapType?: SwapType,
hooks?: Record<string, unknown>
) => ({
appCode: appCode,
Expand All @@ -171,7 +191,7 @@ export const COW_APP_DATA = (
? { quote: { slippageBips, smartSlippage } }
: // Slippage is not used in limit orders
{}),
partnerFee: COW_PARTNER_FEE(tokenFromSymbol, tokenToSymbol),
partnerFee: COW_PARTNER_FEE(tokenFromSymbol, tokenToSymbol, swapType),
hooks,
},
});
Expand Down
6 changes: 5 additions & 1 deletion src/components/transactions/Swap/helpers/cow/adapters.helpers.ts
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Expand Up @@ -82,7 +82,11 @@ export const calculateInstanceAddress = async ({
quoteId: isCowProtocolRates(state.swapRate) ? state.swapRate?.quoteId : undefined,
side: state.processedSide,
slippageBps: state.orderType == OrderType.MARKET ? Number(state.slippage) * 100 : undefined,
partnerFee: COW_PARTNER_FEE(state.sellAmountToken.symbol, state.buyAmountToken.symbol),
partnerFee: COW_PARTNER_FEE(
state.sellAmountToken.symbol,
state.buyAmountToken.symbol,
state.swapType
),
};

const { flashLoanFeeAmount, sellAmountToSign } = flashLoanSdk.calculateFlashLoanAmounts({
Expand Down
32 changes: 28 additions & 4 deletions src/components/transactions/Swap/helpers/cow/orders.helpers.ts
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Expand Up @@ -27,7 +27,7 @@ import {
COW_PROTOCOL_ETH_FLOW_ADDRESS_BY_ENV,
isChainIdSupportedByCoWProtocol,
} from '../../constants/cow.constants';
import { OrderType, SwapState } from '../../types';
import { OrderType, SwapState, SwapType } from '../../types';
import { getCowTradingSdkByChainIdAndAppCode } from './env.helpers';

export const COW_ENV: CowEnv = 'prod';
Expand Down Expand Up @@ -74,6 +74,7 @@ export type CowProtocolActionParams = {
signatureParams?: SignedParams;
estimateGasLimit?: (tx: PopulatedTransaction, chainId?: number) => Promise<PopulatedTransaction>;
validTo: number;
swapType?: SwapType;
};

export const getPreSignTransaction = async ({
Expand All @@ -94,6 +95,7 @@ export const getPreSignTransaction = async ({
tokenDestDecimals,
kind,
validTo,
swapType,
}: CowProtocolActionParams) => {
if (!isChainIdSupportedByCoWProtocol(chainId)) {
throw new Error('Chain not supported.');
Expand Down Expand Up @@ -125,7 +127,8 @@ export const getPreSignTransaction = async ({
slippageBps,
smartSlippage,
orderType,
appCode
appCode,
swapType
),
additionalParams: {
signingScheme: SigningScheme.PRESIGN,
Expand Down Expand Up @@ -165,6 +168,7 @@ export const sendOrder = async ({
signatureParams,
estimateGasLimit,
validTo,
swapType,
}: CowProtocolActionParams) => {
const signer = provider?.getSigner();

Expand Down Expand Up @@ -199,6 +203,7 @@ export const sendOrder = async ({
smartSlippage,
orderType,
appCode,
swapType,
hooks
);

Expand Down Expand Up @@ -289,6 +294,7 @@ export const getUnsignerOrder = async ({
validTo,
srcToken,
receiver,
swapType,
}: {
sellAmount: string;
buyAmount: string;
Expand All @@ -304,10 +310,19 @@ export const getUnsignerOrder = async ({
validTo: number;
srcToken?: string;
receiver?: string;
swapType?: SwapType;
}) => {
const metadataApi = new MetadataApi();
const { appDataHex } = await metadataApi.getAppDataInfo(
COW_APP_DATA(tokenFromSymbol, tokenToSymbol, slippageBps, smartSlippage, orderType, appCode)
COW_APP_DATA(
tokenFromSymbol,
tokenToSymbol,
slippageBps,
smartSlippage,
orderType,
appCode,
swapType
)
);

return {
Expand Down Expand Up @@ -346,10 +361,19 @@ export const populateEthFlowTx = async (
smartSlippage: boolean,
appCode: string,
orderType: OrderType,
swapType?: SwapType,
quoteId?: number
): Promise<PopulatedTransaction> => {
const appDataHex = await hashAppData(
COW_APP_DATA(tokenFromSymbol, tokenToSymbol, slippageBps, smartSlippage, orderType, appCode)
COW_APP_DATA(
tokenFromSymbol,
tokenToSymbol,
slippageBps,
smartSlippage,
orderType,
appCode,
swapType
)
);

const orderData = {
Expand Down
2 changes: 1 addition & 1 deletion src/components/transactions/Swap/helpers/cow/rates.helpers.ts
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Expand Up @@ -103,7 +103,7 @@ export async function getCowProtocolSellRates({
buyTokenDecimals: destDecimals,
signer,
appCode: appCode,
partnerFee: COW_PARTNER_FEE(inputSymbol, outputSymbol),
partnerFee: COW_PARTNER_FEE(inputSymbol, outputSymbol, swapType),
},
{
// Price Quality is set to OPTIMAL by default
Expand Down
3 changes: 2 additions & 1 deletion src/components/transactions/Swap/hooks/useSwapOrderAmounts.ts
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Expand Up @@ -79,7 +79,8 @@ export const useSwapOrderAmounts = ({
let networkFeeAmountInBuyFormatted = '0';
const partnetFeeBps =
state.provider === SwapProvider.COW_PROTOCOL
? COW_PARTNER_FEE(state.sourceToken.symbol, state.destinationToken.symbol).volumeBps
? COW_PARTNER_FEE(state.sourceToken.symbol, state.destinationToken.symbol, state.swapType)
.volumeBps
: 0;
const partnerFeeAmount =
state.side === 'sell'
Expand Down
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