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 });
Resources - Previous
Error codes
GET ERC20 Offchain Fee
Last modified 3mo ago