Fees

Each Loopring L2 transaction requires a fee to be paid (L2 transactions are packed, batched, and submitted to Ethereum L1 which has a gas fee).

As the gasPrice changes, the fee is changed every 15 minutes.

Pay Fee ERC20 Token :

• Mainnet: ETH, LRC, USDT, USDC, DAI

• GOERLI: ETH, LRC, USDT, DAI

Loopring has 2 get Fee APIs:

• getOffchainFeeAmt:

  • ORDER,

  • OFFCHAIN_WITHDRAWAL,

  • UPDATE_ACCOUNT,

  • TRANSFER,

  • FAST_OFFCHAIN_WITHDRAWAL,

  • OPEN_ACCOUNT,

  • AMM_EXIT,

  • DEPOSIT,

  • AMM_JOIN,

• getNFTOffchainFeeAmt:

  • NFT_MINT,

  • NFT_WITHDRAWAL,

  • NFT_TRANSFER,

  • NFT_DEPLOY,

Fee: updateAccount

    // Step 1. get account info
console.log(LoopringAPI.exchangeAPI.getAccount);

const {accInfo} = await LoopringAPI.exchangeAPI.getAccount({
  owner: LOOPRING_EXPORTED_ACCOUNT.address,
});
console.log("accInfo:", accInfo);

// Step 2. eddsaKey
const eddsaKey = await signatureKeyPairMock(accInfo);
console.log("eddsaKey:", eddsaKey.sk);

// Step 3. get apikey
const {apiKey} = await LoopringAPI.userAPI.getUserApiKey(
  {
    accountId: accInfo.accountId,
  },
  eddsaKey.sk
);
console.log("apiKey:", apiKey);
return {accInfo, eddsaKey, apiKey};

const response = await LoopringAPI.userAPI.getOffchainFeeAmt(
  {
    accountId: accInfo.accountId,
    requestType: sdk.OffchainFeeReqType.UPDATE_ACCOUNT,
  },
  apiKey
);
console.log("updateAccount:", response);

---

Fee: transfer

    // Step 1. get account info
const {accInfo} = await LoopringAPI.exchangeAPI.getAccount({
  owner: LOOPRING_EXPORTED_ACCOUNT.address,
});
console.log("accInfo:", accInfo);

// Step 2. eddsaKey
const eddsaKey = await signatureKeyPairMock(accInfo);
console.log("eddsaKey:", eddsaKey.sk);

// Step 3. get apikey
const {apiKey} = await LoopringAPI.userAPI.getUserApiKey(
  {
    accountId: accInfo.accountId,
  },
  eddsaKey.sk
);
console.log("apiKey:", apiKey);
return {accInfo, eddsaKey, apiKey};
const response = await LoopringAPI.userAPI.getOffchainFeeAmt(
  {
    accountId: accInfo.accountId,
    requestType: sdk.OffchainFeeReqType.TRANSFER,
  },
  apiKey
);
console.log("transfer:", response);

Fee: withdraw

    // Step 1. get account info
const {accInfo} = await LoopringAPI.exchangeAPI.getAccount({
  owner: LOOPRING_EXPORTED_ACCOUNT.address,
});
console.log("accInfo:", accInfo);

// Step 2. eddsaKey
const eddsaKey = await signatureKeyPairMock(accInfo);
console.log("eddsaKey:", eddsaKey.sk);

// Step 3. get apikey
const {apiKey} = await LoopringAPI.userAPI.getUserApiKey(
  {
    accountId: accInfo.accountId,
  },
  eddsaKey.sk
);
console.log("apiKey:", apiKey);
return {accInfo, eddsaKey, apiKey};
const response = await LoopringAPI.userAPI.getOffchainFeeAmt(
  {
    accountId: accInfo.accountId,
    tokenSymbol: TOKEN_INFO.tokenMap.LRC.symbol,
    requestType: sdk.OffchainFeeReqType.OFFCHAIN_WITHDRAWAL,
  },
  apiKey
);
console.log("withdraw:", response);

---

Fee: fastWithdraw

    // Step 1. get account info
const {accInfo} = await LoopringAPI.exchangeAPI.getAccount({
  owner: LOOPRING_EXPORTED_ACCOUNT.address,
});
console.log("accInfo:", accInfo);

// Step 2. eddsaKey
const eddsaKey = await signatureKeyPairMock(accInfo);
console.log("eddsaKey:", eddsaKey.sk);

// Step 3. get apikey
const {apiKey} = await LoopringAPI.userAPI.getUserApiKey(
  {
    accountId: accInfo.accountId,
  },
  eddsaKey.sk
);
console.log("apiKey:", apiKey);
return {accInfo, eddsaKey, apiKey};
const response = await LoopringAPI.userAPI.getOffchainFeeAmt(
  {
    accountId: accInfo.accountId,
    requestType: sdk.OffchainFeeReqType.FAST_OFFCHAIN_WITHDRAWAL,
    tokenSymbol: TOKEN_INFO.tokenMap.LRC.symbol,
  },
  apiKey
);
console.log("fastWithdraw:", response);

---

Fee: order

    // Step 1. get account info
const {accInfo} = await LoopringAPI.exchangeAPI.getAccount({
  owner: LOOPRING_EXPORTED_ACCOUNT.address,
});
console.log("accInfo:", accInfo);

// Step 2. eddsaKey
const eddsaKey = await signatureKeyPairMock(accInfo);
console.log("eddsaKey:", eddsaKey.sk);

// Step 3. get apikey
const {apiKey} = await LoopringAPI.userAPI.getUserApiKey(
  {
    accountId: accInfo.accountId,
  },
  eddsaKey.sk
);
console.log("apiKey:", apiKey);
return {accInfo, eddsaKey, apiKey};
const response = await LoopringAPI.userAPI.getOffchainFeeAmt(
  {
    accountId: accInfo.accountId,
    requestType: sdk.OffchainFeeReqType.ORDER,
    tokenSymbol: TOKEN_INFO.tokenMap.LRC.symbol,
  },
  apiKey
);
console.log("order:", response);

Fee: amm_exit

    // Step 1. get account info
const {accInfo} = await LoopringAPI.exchangeAPI.getAccount({
  owner: LOOPRING_EXPORTED_ACCOUNT.address,
});
console.log("accInfo:", accInfo);

// Step 2. eddsaKey
const eddsaKey = await signatureKeyPairMock(accInfo);
console.log("eddsaKey:", eddsaKey.sk);

// Step 3. get apikey
const {apiKey} = await LoopringAPI.userAPI.getUserApiKey(
  {
    accountId: accInfo.accountId,
  },
  eddsaKey.sk
);
console.log("apiKey:", apiKey);
return {accInfo, eddsaKey, apiKey};
const response = await LoopringAPI.userAPI.getOffchainFeeAmt(
  {
    accountId: accInfo.accountId,
    requestType: sdk.OffchainFeeReqType.AMM_EXIT,
  },
  apiKey
);
console.log("amm_exit:", response);

Fee: amm_join

    // Step 1. get account info
const {accInfo} = await LoopringAPI.exchangeAPI.getAccount({
  owner: LOOPRING_EXPORTED_ACCOUNT.address,
});
console.log("accInfo:", accInfo);

// Step 2. eddsaKey
const eddsaKey = await signatureKeyPairMock(accInfo);
console.log("eddsaKey:", eddsaKey.sk);

// Step 3. get apikey
const {apiKey} = await LoopringAPI.userAPI.getUserApiKey(
  {
    accountId: accInfo.accountId,
  },
  eddsaKey.sk
);
console.log("apiKey:", apiKey);
return {accInfo, eddsaKey, apiKey};
const response = await LoopringAPI.userAPI.getOffchainFeeAmt(
  {
    accountId: accInfo.accountId,
    requestType: sdk.OffchainFeeReqType.AMM_JOIN,
  },
  apiKey
);
console.log("amm_join:", response);

Fee: NFTTransfer

    // Step 1. get account info
const {accInfo} = await LoopringAPI.exchangeAPI.getAccount({
  owner: LOOPRING_EXPORTED_ACCOUNT.address,
});
console.log("accInfo:", accInfo);

// Step 2. eddsaKey
const eddsaKey = await signatureKeyPairMock(accInfo);
console.log("eddsaKey:", eddsaKey.sk);

// Step 3. get apikey
const {apiKey} = await LoopringAPI.userAPI.getUserApiKey(
  {
    accountId: accInfo.accountId,
  },
  eddsaKey.sk
);
console.log("apiKey:", apiKey);
return {accInfo, eddsaKey, apiKey};
const response = await LoopringAPI.userAPI.getNFTOffchainFeeAmt(
  {
    accountId: accInfo.accountId,
    requestType: sdk.OffchainNFTFeeReqType.NFT_TRANSFER,
  },
  apiKey
);
console.log("NFTTransfer:", response);

Fee: NFTWithdrawal

    // Step 1. get account info
const {accInfo} = await LoopringAPI.exchangeAPI.getAccount({
  owner: LOOPRING_EXPORTED_ACCOUNT.address,
});
console.log("accInfo:", accInfo);

// Step 2. eddsaKey
const eddsaKey = await signatureKeyPairMock(accInfo);
console.log("eddsaKey:", eddsaKey.sk);

// Step 3. get apikey
const {apiKey} = await LoopringAPI.userAPI.getUserApiKey(
  {
    accountId: accInfo.accountId,
  },
  eddsaKey.sk
);
console.log("apiKey:", apiKey);
return {accInfo, eddsaKey, apiKey};
const response = await LoopringAPI.userAPI.getNFTOffchainFeeAmt(
  {
    accountId: accInfo.accountId,
    tokenAddress: LOOPRING_EXPORTED_ACCOUNT.nftTokenAddress,
    requestType: sdk.OffchainNFTFeeReqType.NFT_WITHDRAWAL,
  },
  apiKey
);
console.log("NFTWithdrawal:", response);

getActiveFeeInfo without apikey & accountId

const response = await LoopringAPI.globalAPI.getActiveFeeInfo({});

getActiveFeeInfo without apikey with accountId

const response = await LoopringAPI.globalAPI.getActiveFeeInfo({ accountId: LOOPRING_EXPORTED_ACCOUNT.accountId });