/**
* Agenti Fee Configuration
* @description Revenue configuration for swap fees and platform charges
* @author nirholas
*/
// Fee recipient wallet address - UPDATE THIS TO YOUR ADDRESS
export const FEE_RECIPIENT = process.env.NEXT_PUBLIC_FEE_RECIPIENT || "0x742d35Cc6634C0532925a3b844Bc9e7595f5bB0D";
// Fee percentage (0.15 = 0.15%)
export const SWAP_FEE_PERCENTAGE = 0.15;
// Minimum fee in USD (to cover gas on small swaps)
export const MIN_FEE_USD = 0.01;
// Maximum fee in USD (cap for large swaps)
export const MAX_FEE_USD = 100;
// Fee-free threshold (swaps under this amount have no fee)
export const FEE_FREE_THRESHOLD_USD = 1;
// Referral fee split (referrer gets this % of the fee)
export const REFERRAL_FEE_SPLIT = 0.20; // 20% to referrer
// Supported fee tokens per chain
export const FEE_TOKENS: Record<number, { address: string; symbol: string; decimals: number }> = {
// Ethereum
1: { address: "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48", symbol: "USDC", decimals: 6 },
// Polygon
137: { address: "0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174", symbol: "USDC", decimals: 6 },
// Arbitrum
42161: { address: "0xaf88d065e77c8cC2239327C5EDb3A432268e5831", symbol: "USDC", decimals: 6 },
// Optimism
10: { address: "0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85", symbol: "USDC", decimals: 6 },
// Base
8453: { address: "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913", symbol: "USDC", decimals: 6 },
// BSC
56: { address: "0x8AC76a51cc950d9822D68b83fE1Ad97B32Cd580d", symbol: "USDC", decimals: 18 },
// Avalanche
43114: { address: "0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E", symbol: "USDC", decimals: 6 },
};
/**
* Calculate swap fee
* @param amountUSD - The swap amount in USD
* @param referrer - Optional referrer address
* @returns Fee breakdown
*/
export function calculateSwapFee(
amountUSD: number,
referrer?: string
): {
feeUSD: number;
feePercentage: number;
platformFeeUSD: number;
referralFeeUSD: number;
referrer: string | null;
} {
// No fee for tiny swaps
if (amountUSD < FEE_FREE_THRESHOLD_USD) {
return {
feeUSD: 0,
feePercentage: 0,
platformFeeUSD: 0,
referralFeeUSD: 0,
referrer: null,
};
}
// Calculate base fee
let feeUSD = (amountUSD * SWAP_FEE_PERCENTAGE) / 100;
// Apply min/max
feeUSD = Math.max(feeUSD, MIN_FEE_USD);
feeUSD = Math.min(feeUSD, MAX_FEE_USD);
// Calculate referral split
const referralFeeUSD = referrer ? feeUSD * REFERRAL_FEE_SPLIT : 0;
const platformFeeUSD = feeUSD - referralFeeUSD;
return {
feeUSD,
feePercentage: SWAP_FEE_PERCENTAGE,
platformFeeUSD,
referralFeeUSD,
referrer: referrer || null,
};
}
/**
* Calculate fee in token amount
* @param amountUSD - The swap amount in USD
* @param tokenPrice - Price of the token in USD
* @param tokenDecimals - Token decimals
* @returns Fee in token units (with decimals)
*/
export function calculateFeeInTokens(
amountUSD: number,
tokenPrice: number,
tokenDecimals: number
): bigint {
const { feeUSD } = calculateSwapFee(amountUSD);
const feeInTokens = feeUSD / tokenPrice;
return BigInt(Math.floor(feeInTokens * 10 ** tokenDecimals));
}
/**
* Get fee display string
*/
export function getFeeDisplayString(amountUSD: number): string {
const { feeUSD, feePercentage } = calculateSwapFee(amountUSD);
if (feeUSD === 0) {
return "No fee";
}
return `$${feeUSD.toFixed(2)} (${feePercentage}%)`;
}
/**
* Build fee transfer transaction data
* For including in swap transaction as additional transfer
*/
export function buildFeeTransferData(
chainId: number,
feeAmountWei: bigint,
referrer?: string
): Array<{ to: string; value: string; data: string }> {
const transfers: Array<{ to: string; value: string; data: string }> = [];
const feeToken = FEE_TOKENS[chainId];
if (!feeToken || feeAmountWei === 0n) {
return transfers;
}
const { platformFeeUSD, referralFeeUSD } = calculateSwapFee(Number(feeAmountWei) / 10 ** feeToken.decimals);
// Platform fee transfer
if (platformFeeUSD > 0) {
const platformFeeWei = BigInt(Math.floor(platformFeeUSD * 10 ** feeToken.decimals));
transfers.push({
to: FEE_RECIPIENT,
value: platformFeeWei.toString(),
data: "0x", // Native transfer, or ERC20 transfer data
});
}
// Referral fee transfer
if (referralFeeUSD > 0 && referrer) {
const referralFeeWei = BigInt(Math.floor(referralFeeUSD * 10 ** feeToken.decimals));
transfers.push({
to: referrer,
value: referralFeeWei.toString(),
data: "0x",
});
}
return transfers;
}
export default {
FEE_RECIPIENT,
SWAP_FEE_PERCENTAGE,
calculateSwapFee,
calculateFeeInTokens,
getFeeDisplayString,
buildFeeTransferData,
FEE_TOKENS,
};
