> ## Documentation Index
> Fetch the complete documentation index at: https://docs.powfi.alephium.org/llms.txt
> Use this file to discover all available pages before exploring further.

# Integrator fees

> Charge a fee on swaps routed through your app, on both CPMM and CLMM.

export const VersionBanner = ({network = 'mainnet', products = [], lang = 'en'}) => {
  const SDK_VERSION = '1.0.2';
  const ADDRESSES = {
    mainnet: {
      cpmm: {
        Router: 'ze15rnAwTyVCPnDhN7J8An3SvNeWBsZHAVMeBx1ehXeP',
        TokenPairFactory: '24CXRLvj1QiDH6riwr1EPERG7BcduHKZtktygbq97MfYb'
      },
      clmm: {
        PoolFactory: '24gqd4DMQXVzjm5QDAGxUtYupx3WM2PSu3vZUseuBCV9h',
        PositionManager: 'vFyKSqnJHS9MicrojBcLgztyRFqhS4hB349Ci3LJCELw'
      },
      staking: {
        XAlphToken: '225WevmFp5ZgzPsyVJTvyp2v2uyKrvp329HfrVmzffnWj',
        RewardFeeCollector: '22CE7vG6u64zjjsLZLxeJqQuPDydjPvbP9iG1d861j2G7'
      }
    },
    testnet: {
      cpmm: {
        Router: 'xaueT8kPMvpnaFJEfHv6CJLgqsSPpoNmHjF1QgTxoF9R',
        TokenPairFactory: '29hdd9b9Gp7oXuamwHKfUqBaRXP487HoeTcutS3RhZJEj'
      },
      clmm: {
        PoolFactory: 'z2QFT7qBQrfm8UwAYG3VHWoHs7B56ZDFNdSCcDu5j53m',
        PositionManager: '21p6egW8d6FEyVVuH17WqvHCARsCsD61GcBmeCr75XdGT'
      },
      staking: {
        XAlphToken: '23psDicimC5VdpM56wrgqgCzQzcyXWGCkQGSYWbtZAPRq',
        RewardFeeCollector: '29qQ1LPJ5uqawRviXLVDMeo19JUygRrNNTQy5RUBh817D'
      }
    }
  };
  const EXPLORERS = {
    mainnet: 'https://explorer.alephium.org/addresses/',
    testnet: 'https://testnet.alephium.org/addresses/'
  };
  const LABELS = {
    en: {
      sdk: 'SDK',
      network: 'Network',
      contracts: 'Contracts',
      all: 'All addresses',
      allNetworks: 'mainnet · testnet · devnet',
      devnet: 'Local deployment (addresses vary per devnet)'
    },
    zh: {
      sdk: 'SDK 版本',
      network: '网络',
      contracts: '合约',
      all: '全部地址',
      allNetworks: 'mainnet · testnet · devnet',
      devnet: '本地部署（每个 devnet 的地址不同）'
    },
    fr: {
      sdk: 'SDK',
      network: 'Réseau',
      contracts: 'Contrats',
      all: 'Toutes les adresses',
      allNetworks: 'mainnet · testnet · devnet',
      devnet: 'Déploiement local (adresses propres à chaque devnet)'
    }
  };
  const t = LABELS[lang] ?? LABELS.en;
  const contractsPage = lang === 'en' ? '/reference/contracts' : `/${lang}/reference/contracts`;
  const short = a => `${a.slice(0, 6)}…${a.slice(-4)}`;
  const entries = [];
  const addrs = ADDRESSES[network];
  if (addrs) {
    for (const p of products) {
      for (const [name, address] of Object.entries(addrs[p] ?? ({}))) entries.push({
        name,
        address
      });
    }
  }
  let contractsCell;
  if (network === 'devnet' && products.length > 0) {
    contractsCell = <span>{t.devnet}</span>;
  } else if (entries.length > 0) {
    contractsCell = entries.map(({name, address}, i) => <span key={name}>
        {i > 0 && <span className="mx-1 opacity-50">·</span>}
        {name}{' '}
        <a href={EXPLORERS[network] + address} target="_blank" rel="noreferrer" title={address}>
          <code>{short(address)}</code>
        </a>
      </span>);
  }
  const row = (label, value) => <div className="flex flex-wrap gap-x-2">
      <span className="font-semibold min-w-[5.5rem]">{label}</span>
      <span className="flex-1 min-w-0 break-words">{value}</span>
    </div>;
  return <div className="not-prose mb-6 rounded-xl border border-zinc-950/10 dark:border-white/10 bg-zinc-50 dark:bg-white/5 px-4 py-3 text-sm leading-6 text-zinc-700 dark:text-zinc-300">
      {row(t.sdk, <code>@alephium/powfi-sdk@{SDK_VERSION}</code>)}
      {row(t.network, network === 'all' ? t.allNetworks : network)}
      {contractsCell && row(t.contracts, <span>
            {contractsCell}
            <span className="mx-1 opacity-50">·</span>
            <a href={contractsPage}>{t.all} →</a>
          </span>)}
    </div>;
};

<VersionBanner network="mainnet" products={['cpmm', 'clmm']} lang="en" />

<Note>
  This page is about fees on **swaps**. If you want to earn a share of staking yield by bringing stakers to Powfi, see [Referral staking & partner commission](/guides/referral-staking). The two mechanisms are separate.
</Note>

Wallets and aggregators can take a fee on each swap. The fee is paid in the **input token**, is sent to `feeRecipient` inside the same transaction, and is charged **on top of** the swap input.

## Usage

<CodeGroup>
  ```ts CPMM theme={null}
  await powfi.cpmm.swap({
    tokenInId, tokenOutId,
    amountIn: 1_000n * 10n ** 18n,
    slippageBps: 50n,
    sender: address,
    fee: 3n * 10n ** 18n,          // 3 tokens of tokenIn (0.3%)
    feeRecipient: 'your-fee-address'
  })
  ```

  ```ts CLMM theme={null}
  await powfi.clmm.swap({
    token0: tokenIn, token1: tokenOut,
    amount: amountIn, amountIn,
    slippage: 50n,
    routePlan: [configIndex],
    fee: (amountIn * 30n) / 10_000n,
    feeRecipient: 'your-fee-address'
  })
  ```
</CodeGroup>

The user pays `amountIn + fee` (exact-in) or `maximalTokenInAmount + fee` (exact-out on CPMM). The SDK uses the `SwapMinOutWithFee` / `SwapMaxInWithFee` (CPMM) or `SwapWithoutAccountWithFee` (CLMM) scripts when a fee is set.

## Validation rules

`validateIntegratorFee` runs before signing and throws a plain `Error` if:

| Rule | Message |
| - | - |
| Only one of `fee` / `feeRecipient` is set | `fee and feeRecipient must be provided together` |
| `fee <= 0` | `fee must be greater than 0` |
| `feeRecipient` equals the sender | `feeRecipient must differ from the sender` |
| Input is ALPH and `fee < DUST_AMOUNT` | `an ALPH fee must be at least the dust amount …` |
| `fee >= amountIn` (or `>=` max input for exact-out) | `fee must be less than the swapped amount …` |

When the input is a non-ALPH token, the SDK attaches one extra `DUST_AMOUNT` of ALPH for the fee output. The user pays this dust (0.001 ALPH) on top of `amountIn + fee` and gas, and it ends up at `feeRecipient` together with the fee. Include it when you show the user their total cost.

Groupless `feeRecipient` addresses are normalized to the protocol group automatically.


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