---
title: "Transfer multiple assets from a gas pump address"
method: POST
path: "/v3/blockchain/sc/custodial/transfer/batch"
tags: ["Gas pump"]
---

# Transfer multiple assets from a gas pump address

`POST /v3/blockchain/sc/custodial/transfer/batch`

## Request

- Base URL: `https://api.tatum.io`
- URL: `https://api.tatum.io/v3/blockchain/sc/custodial/transfer/batch`
- Auth: API key in header `x-api-key`

/v3/blockchain/sc/custodial/transfer/batch

**2 credits per API call**

Transfer (send) multiple assets from a gas pump address to one or more addresses.

This operation is usually performed by users in your custodial application: a user who has a gas pump address assigned wants to transfer multiple assets to one or more addresses on the blockchain.

The gas fee for sending the assets will be covered by crypto funds on the master address. Make sure that the master address always has enough funds to cover gas fees.

To be able to send the assets:

*   The gas pump address must be [activated](#operation/ActivateGasPumpAddresses).  
    To check whether the gas pump address is activated, use [this API](#operation/GasPumpAddressesActivatedOrNot).
*   The gas pump address must be the owner of the assets.

If you want to send only one asset, you can also use the [API for transferring an asset from a gas pump account](#operation/TransferCustodialWallet).

This API is supported for the following blockchains:

*   BNB Smart Chain
*   Celo
*   Ethereum
*   Harmony
*   Klaytn
*   Polygon
*   TRON
*   XinFin

**Signing a transaction**  
When transferring assets, you are charged a fee for the transaction, and you must sign the transaction with the private key of the blockchain address from which the fee will be deducted.

Providing the private key in the API is not a secure way of signing transactions, because the private key can be stolen or exposed. Your private keys should never leave your security perimeter. You should use the private keys only for testing a solution you are building on the **testnet** of a blockchain.

For signing transactions on the **mainnet**, we strongly recommend that you use the Tatum [Key Management System (KMS)](https://github.com/tatumio/tatum-kms) and provide the signature ID instead of the private key in the API. Alternatively, you can use the [Tatum JavaScript client](https://github.com/tatumio/tatum-js/tree/v2).

## Request body

- union
  - TransferCustodialWalletBatch
    - `chain` 'BSC' | 'ETH' | 'KLAY' | 'MATIC' | 'ONE' | 'XDC', required: The blockchain to work with
    - `custodialAddress` string, required: The gas pump address that transfers the assets; this is the address that you <a href="#operation/PrecalculateGasPumpAddresses">precalculated</a> and <a href="#operation/ActivateGasPumpAddresses">activated</a> earlier and that is assigned to a customer in your custodial application; this is not the "master address"
    - `recipient` string[], required: The blockchain address that receives the assets
    - `contractType` number[], required: The type of the assets to transfer. Set <code>0</code> for fungible tokens (ERC-20 or equivalent), <code>1</code> for NFTs (ERC-721 or equivalent), <code>2</code> for Multi Tokens (ERC-1155 or equivalent), or <code>3</code> for native blockchain currencies.
    - `tokenAddress` string[], required: <ul> <li> If the assets are fungible tokens, NFTs, or Multi Tokens, set this parameter to the array of the addresses of the tokens to transfer:<br/> <code>"tokenAddress": ["0x782919AFc85eEA2cB736874225456bB5d3e242bA","0x74225456bB5d3e242bA782919AFc85eEA2cB7368",...,"0x3e242bA78274225456bB52cB7368d919AFc85eEA"]</code> </li> <li> If the assets are a native blockchain currency, set this parameter to the array of zeros, a zero per currency:<br/> <code>"tokenAddress": ["0","0",...,"0"]</code> </li> </ul>
    - `amount` string[], required: <ul> <li> If the assets are fungible tokens, Multi Tokens, or a native blockchain currency, set this parameter to the array of the amounts of the assets to transfer:<br/> <code>"amount": ["100000","15000",...,"250000"]</code> </li> <li> If the assets are NFTs, set this parameter to the array of zeros, a zero per NFT:<br/> <code>"amount": ["0","0",...,"0"]</code> </li> </ul>
    - `tokenId` string[], required: <ul> <li> If the assets are Multi Tokens or NFTs, set this parameter to the array of the IDs of the tokens to transfer:<br/> <code>"tokenId": ["12","13",...,"24"]</code> </li> <li> If the assets are fungible tokens or a native blockchain currency, set this parameter to the array of zeros, a zero per fungible token/currency:<br/> <code>"tokenId": ["0","0",...,"0"]</code> </li> </ul>
    - `fromPrivateKey` string, required: The private key of the blockchain address that owns the gas pump address ("master address")
    - `nonce` number: The nonce to be set to the transfer transaction; if not present, the last known nonce will be used
    - `fee` CustomFee: The custom defined fee; if not present, will be calculated automatically
      - `gasPrice` string, required: The price for one gas unit (in Gwei)
      - `gasLimit` string, required: The maximum number of gas units that you are willing to spend on processing the transaction at the provided gas price
  - TransferCustodialWalletBatchKMS
    - `chain` 'BSC' | 'ETH' | 'KLAY' | 'MATIC' | 'ONE' | 'XDC', required: The blockchain to work with
    - `custodialAddress` string, required: The gas pump address that transfers the assets; this is the address that you <a href="#operation/PrecalculateGasPumpAddresses">precalculated</a> and <a href="#operation/ActivateGasPumpAddresses">activated</a> earlier and that is assigned to a customer in your custodial application; this is not the "master address"
    - `recipient` string[], required: The blockchain address that receives the assets
    - `contractType` number[], required: The type of the assets to transfer. Set <code>0</code> for fungible tokens (ERC-20 or equivalent), <code>1</code> for NFTs (ERC-721 or equivalent), <code>2</code> for Multi Tokens (ERC-1155 or equivalent), or <code>3</code> for native blockchain currencies.
    - `tokenAddress` string[], required: <ul> <li> If the assets are fungible tokens, NFTs, or Multi Tokens, set this parameter to the array of the addresses of the tokens to transfer:<br/> <code>"tokenAddress": ["0x782919AFc85eEA2cB736874225456bB5d3e242bA","0x74225456bB5d3e242bA782919AFc85eEA2cB7368",...,"0x3e242bA78274225456bB52cB7368d919AFc85eEA"]</code> </li> <li> If the assets are a native blockchain currency, set this parameter to the array of zeros, a zero per currency:<br/> <code>"tokenAddress": ["0","0",...,"0"]</code> </li> </ul>
    - `amount` string[], required: <ul> <li> If the assets are fungible tokens, Multi Tokens, or a native blockchain currency, set this parameter to the array of the amounts of the assets to transfer:<br/> <code>"amount": ["100000","15000",...,"250000"]</code> </li> <li> If the assets are NFTs, set this parameter to the array of zeros, a zero per NFT:<br/> <code>"amount": ["0","0",...,"0"]</code> </li> </ul>
    - `tokenId` string[], required: <ul> <li> If the assets are Multi Tokens or NFTs, set this parameter to the array of the IDs of the tokens to transfer:<br/> <code>"tokenId": ["12","13",...,"24"]</code> </li> <li> If the assets are fungible tokens or a native blockchain currency, set this parameter to the array of zeros, a zero per fungible token/currency:<br/> <code>"tokenId": ["0","0",...,"0"]</code> </li> </ul>
    - `signatureId` string, uuid, required: The KMS identifier of the private key of the blockchain address that owns the gas pump address key ("master address")
    - `index` number: (Only if the signature ID is mnemonic-based) The index of the "master address"
    - `nonce` number: The nonce to be set to the transfer transaction; if not present, the last known nonce will be used
    - `fee` CustomFee: The custom defined fee; if not present, will be calculated automatically
      - `gasPrice` string, required: The price for one gas unit (in Gwei)
      - `gasLimit` string, required: The maximum number of gas units that you are willing to spend on processing the transaction at the provided gas price
  - TransferCustodialWalletBatchCelo
    - `chain` 'CELO', required: The blockchain to work with
    - `custodialAddress` string, required: The gas pump address that transfers the assets; this is the address that you <a href="#operation/PrecalculateGasPumpAddresses">precalculated</a> and <a href="#operation/ActivateGasPumpAddresses">activated</a> earlier and that is assigned to a customer in your custodial application; this is not the "master address"
    - `recipient` string[], required: The blockchain address that receives the assets
    - `contractType` number[], required: The type of the assets to transfer. Set <code>0</code> for fungible tokens (ERC-20 or equivalent), <code>1</code> for NFTs (ERC-721 or equivalent), <code>2</code> for Multi Tokens (ERC-1155 or equivalent), or <code>3</code> for native blockchain currencies.
    - `tokenAddress` string[], required: <ul> <li> If the assets are fungible tokens, NFTs, or Multi Tokens, set this parameter to the array of the addresses of the tokens to transfer:<br/> <code>"tokenAddress": ["0x782919AFc85eEA2cB736874225456bB5d3e242bA","0x74225456bB5d3e242bA782919AFc85eEA2cB7368",...,"0x3e242bA78274225456bB52cB7368d919AFc85eEA"]</code> </li> <li> If the assets are a native blockchain currency, set this parameter to the array of zeros, a zero per currency:<br/> <code>"tokenAddress": ["0","0",...,"0"]</code> </li> </ul>
    - `amount` string[], required: <ul> <li> If the assets are fungible tokens, Multi Tokens, or a native blockchain currency, set this parameter to the array of the amounts of the assets to transfer:<br/> <code>"amount": ["100000","15000",...,"250000"]</code> </li> <li> If the assets are NFTs, set this parameter to the array of zeros, a zero per NFT:<br/> <code>"amount": ["0","0",...,"0"]</code> </li> </ul>
    - `tokenId` string[], required: <ul> <li> If the assets are Multi Tokens or NFTs, set this parameter to the array of the IDs of the tokens to transfer:<br/> <code>"tokenId": ["12","13",...,"24"]</code> </li> <li> If the assets are fungible tokens or a native blockchain currency, set this parameter to the array of zeros, a zero per fungible token/currency:<br/> <code>"tokenId": ["0","0",...,"0"]</code> </li> </ul>
    - `fromPrivateKey` string, required: The private key of the blockchain address that owns the gas pump address ("master address")
    - `feeCurrency` 'CELO' | 'CUSD' | 'CEUR': The currency in which the gas fee will be paid
    - `nonce` number: The nonce to be set to the transfer transaction; if not present, the last known nonce will be used
    - `fee` CustomFee: The custom defined fee; if not present, will be calculated automatically
      - `gasPrice` string, required: The price for one gas unit (in Gwei)
      - `gasLimit` string, required: The maximum number of gas units that you are willing to spend on processing the transaction at the provided gas price
  - TransferCustodialWalletBatchCeloKMS
    - `chain` 'CELO', required: The blockchain to work with
    - `custodialAddress` string, required: The gas pump address that transfers the assets; this is the address that you <a href="#operation/PrecalculateGasPumpAddresses">precalculated</a> and <a href="#operation/ActivateGasPumpAddresses">activated</a> earlier and that is assigned to a customer in your custodial application; this is not the "master address"
    - `recipient` string[], required: The blockchain address that receives the assets
    - `contractType` number[], required: The type of the assets to transfer. Set <code>0</code> for fungible tokens (ERC-20 or equivalent), <code>1</code> for NFTs (ERC-721 or equivalent), <code>2</code> for Multi Tokens (ERC-1155 or equivalent), or <code>3</code> for native blockchain currencies.
    - `tokenAddress` string[], required: <ul> <li> If the assets are fungible tokens, NFTs, or Multi Tokens, set this parameter to the array of the addresses of the tokens to transfer:<br/> <code>"tokenAddress": ["0x782919AFc85eEA2cB736874225456bB5d3e242bA","0x74225456bB5d3e242bA782919AFc85eEA2cB7368",...,"0x3e242bA78274225456bB52cB7368d919AFc85eEA"]</code> </li> <li> If the assets are a native blockchain currency, set this parameter to the array of zeros, a zero per currency:<br/> <code>"tokenAddress": ["0","0",...,"0"]</code> </li> </ul>
    - `amount` string[], required: <ul> <li> If the assets are fungible tokens, Multi Tokens, or a native blockchain currency, set this parameter to the array of the amounts of the assets to transfer:<br/> <code>"amount": ["100000","15000",...,"250000"]</code> </li> <li> If the assets are NFTs, set this parameter to the array of zeros, a zero per NFT:<br/> <code>"amount": ["0","0",...,"0"]</code> </li> </ul>
    - `tokenId` string[], required: <ul> <li> If the assets are Multi Tokens or NFTs, set this parameter to the array of the IDs of the tokens to transfer:<br/> <code>"tokenId": ["12","13",...,"24"]</code> </li> <li> If the assets are fungible tokens or a native blockchain currency, set this parameter to the array of zeros, a zero per fungible token/currency:<br/> <code>"tokenId": ["0","0",...,"0"]</code> </li> </ul>
    - `signatureId` string, uuid, required: The KMS identifier of the private key of the blockchain address that owns the gas pump address key ("master address")
    - `index` number: (Only if the signature ID is mnemonic-based) The index of the "master address"
    - `feeCurrency` 'CELO' | 'CUSD' | 'CEUR': The currency in which the gas fee will be paid
    - `nonce` number: The nonce to be set to the transfer transaction; if not present, the last known nonce will be used
    - `fee` CustomFee: The custom defined fee; if not present, will be calculated automatically
      - `gasPrice` string, required: The price for one gas unit (in Gwei)
      - `gasLimit` string, required: The maximum number of gas units that you are willing to spend on processing the transaction at the provided gas price
  - TransferCustodialWalletBatchTron
    - `chain` 'TRON', required: The blockchain to work with
    - `custodialAddress` string, required: The gas pump address that transfers the assets; this is the address that you <a href="#operation/PrecalculateGasPumpAddresses">precalculated</a> and <a href="#operation/ActivateGasPumpAddresses">activated</a> earlier and that is assigned to a customer in your custodial application; this is not the "master address"
    - `recipient` string[], required: The blockchain address that receives the assets
    - `contractType` number[], required: The type of the assets to transfer. Set <code>0</code> for fungible tokens (ERC-20 or equivalent), <code>1</code> for NFTs (ERC-721 or equivalent), or <code>3</code> for native blockchain currencies.
    - `tokenAddress` string[], required: <ul> <li> If the assets are fungible tokens or NFTs, set this parameter to the array of the addresses of the tokens to transfer:<br/> <code>"tokenAddress": ["0x782919AFc85eEA2cB736874225456bB5d3e242bA","0x74225456bB5d3e242bA782919AFc85eEA2cB7368",...,"0x3e242bA78274225456bB52cB7368d919AFc85eEA"]</code> </li> <li> If the assets are a native blockchain currency, set this parameter to the array of zeros, a zero per currency:<br/> <code>"tokenAddress": ["0","0",...,"0"]</code> </li> </ul>
    - `amount` string[], required: <ul> <li> If the assets are fungible tokens or a native blockchain currency, set this parameter to the array of the amounts of the assets to transfer:<br/> <code>"amount": ["100000","15000",...,"250000"]</code> </li> <li> If the assets are NFTs, set this parameter to the array of zeros, a zero per NFT:<br/> <code>"amount": ["0","0",...,"0"]</code> </li> </ul>
    - `tokenId` string[], required: <ul> <li> If the assets are NFTs, set this parameter to the array of the IDs of the tokens to transfer:<br/> <code>"tokenId": ["12","13",...,"24"]</code> </li> <li> If the assets are fungible tokens or a native blockchain currency, set this parameter to the array of zeros, a zero per fungible token/currency:<br/> <code>"tokenId": ["0","0",...,"0"]</code> </li> </ul>
    - `fromPrivateKey` string, required: The private key of the blockchain address that owns the gas pump address ("master address")
    - `feeLimit` number, required: The maximum amount to be paid as the gas fee (in TRX)
  - TransferCustodialWalletBatchTronKMS
    - `chain` 'TRON', required: The blockchain to work with
    - `custodialAddress` string, required: The gas pump address that transfers the assets; this is the address that you <a href="#operation/PrecalculateGasPumpAddresses">precalculated</a> and <a href="#operation/ActivateGasPumpAddresses">activated</a> earlier and that is assigned to a customer in your custodial application; this is not the "master address"
    - `from` string, required: The blockchain address that owns the gas pump address ("master address") in the Base58 format
    - `recipient` string[], required: The blockchain address that receives the assets
    - `contractType` number[], required: The type of the assets to transfer. Set <code>0</code> for fungible tokens (ERC-20 or equivalent), <code>1</code> for NFTs (ERC-721 or equivalent), or <code>3</code> for native blockchain currencies.
    - `tokenAddress` string[], required: <ul> <li> If the assets are fungible tokens or NFTs, set this parameter to the array of the addresses of the tokens to transfer:<br/> <code>"tokenAddress": ["0x782919AFc85eEA2cB736874225456bB5d3e242bA","0x74225456bB5d3e242bA782919AFc85eEA2cB7368",...,"0x3e242bA78274225456bB52cB7368d919AFc85eEA"]</code> </li> <li> If the assets are a native blockchain currency, set this parameter to the array of zeros, a zero per currency:<br/> <code>"tokenAddress": ["0","0",...,"0"]</code> </li> </ul>
    - `amount` string[], required: <ul> <li> If the assets are fungible tokens or a native blockchain currency, set this parameter to the array of the amounts of the assets to transfer:<br/> <code>"amount": ["100000","15000",...,"250000"]</code> </li> <li> If the assets are NFTs, set this parameter to the array of zeros, a zero per NFT:<br/> <code>"amount": ["0","0",...,"0"]</code> </li> </ul>
    - `tokenId` string[], required: <ul> <li> If the assets are NFTs, set this parameter to the array of the IDs of the tokens to transfer:<br/> <code>"tokenId": ["12","13",...,"24"]</code> </li> <li> If the assets are fungible tokens or a native blockchain currency, set this parameter to the array of zeros, a zero per fungible token/currency:<br/> <code>"tokenId": ["0","0",...,"0"]</code> </li> </ul>
    - `signatureId` string, uuid, required: The KMS identifier of the private key of the blockchain address that owns the gas pump address key ("master address")
    - `index` number: (Only if the signature ID is mnemonic-based) The index of the "master address"
    - `feeLimit` number, required: The maximum amount to be paid as the gas fee (in TRX)

## Response `200`

OK

- union
  - TransactionHash
    - `txId` string, required: The hash (ID) of the transaction
  - SignatureId
    - `signatureId` string, uuid, required: The internal Tatum ID of the prepared transaction for Key Management Sysytem (KMS) to sign<br/>This is different from the <code>signatureId</code> parameter that you provided in the request body. The <code>signatureId</code> parameter in the request body specifies the signature ID associated with the private key in KMS.

## Other responses

- `400`: Bad Request
- `401`: Unauthorized. Not valid or inactive subscription key present in the HTTP Header.
- `403`: Forbidden. The request is authenticated, but it is not possible to perform the operation due to logical error or invalid permissions.
- `500`: Internal server error. There was an error on the server during the processing of the request.

---

[API](https://skmtc.dev/tatum/apis/smart-contracts.md) - [All operations](https://skmtc.dev/tatum/apis/smart-contracts/llms.txt) - [OpenAPI document](https://skmtc.dev/tatum/apis/smart-contracts/revisions/c0146043bb37?raw)