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Gas pump

The gas pump is Tatum's feature that helps you manage gas fees in a custodial application. When you use the gas pump, gas fees for any transaction made by your customers (users of your custodial application) are automatically deducted from the master address instead of the customer's address. This eliminates the need to send crypto to each customer's address to pay for gas fees.

For more information about the gas pump, see our user documentation.

Each API related to the gas pump supports its own set of the blockchains. The list of the supported blockchains is provided in the API description further in this section.

Precalculate gas pump addresses

2 credits per API call

Precalculate (generate) gas pump addresses that you can assign to the customers of your custodial application.

This API does not make any changes on the blockchain itself, just generates addresses that follow the blockchain's requirements for the address format; therefore, no gas fee is applied.

This API is supported for the following blockchains:

  • BNB Smart Chain
  • Celo
  • Ethereum
  • Harmony
  • Klaytn
  • Polygon
  • TRON

Address index
Each address should be associated with its own index. Use the from and to request body parameters to set a range of index values for the addresses to precalculate. You can start with any number, but we recommend that you start from 0.

In one API call, you can precalculate:

  • Up to 4,000 addresses for Harmony
  • Up to 500 addresses for TRON
  • Up to 5,000 addresses for the other supported blockchains

If you need more addresses than one API call can precalculate, make several API calls. For example, if you need 10,000 addresses on Ethereum, make an API call with an index range from 0 through 4,999 and then make another API call with an index range from 5,000 through 9,999.

The order in which the precalculated addresses are returned in the API response is the order of the values in the index range, and the index values are assigned to the addresses accordingly.
For example, you precalculated three gas pump addresses with a range of index values from 3 to 5. The first address in the returned arrray is assigned the index value "3", the second one - "4", and the third one - "5".

[
  "0x8cb76aed9c5e336ef961265c6079c14e9cd3d2ea", // index is 3
  "0x5c6079c14e9cd3d2ea8cb76aed9c5e336ef96126", // index is 4
  "0xc5e336ef9612614e9cd3d2ea8cb76aed95c6079c"  // index is 5
]

The owner of the gas pump addresses
The owner (also referred to as "master address") is the blockchain address that will own the precalculated gas pump addresses. The owner will also be paying gas fees for operations made on the gas pump addresses. You have to make sure that the owner always has enough funds to cover these gas fees.

Activated and not activated addresses
The precalculated addresses can be immediately assigned to customers and can receive funds. However, they cannot be used to send funds to other addresses. This is because the addresses are not activated. To make the addresses be able to send funds, activate them.

SecurityX-API-Key
Request
Request Body schema: application/json
chain
required
string

The blockchain to work with

Enum: "BSC" "CELO" "ETH" "MATIC" "KLAY" "ONE" "TRON"
owner
required
string

The blockchain address that will own the precalculated gas pump addresses and will be used to pay gas fees for operations made on the gas pump addresses; can be referred to as "master address"

from
required
integer >= 0

The start index of the range of gas pump addresses to precalculate

to
required
integer >= 0

The end index of the range of gas pump addresses to precalculate; must be greater than or equal to the value in the from parameter

Responses
200

OK

400

Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.

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 required operation due to a logical error or invalid permissions.

500

Internal server error. There was an error on the server while processing the request.

post/v3/gas-pump
Request samples
application/json
{
  • "chain": "ETH",
  • "owner": "0x2b5a0bE5940B63dE1eDdCCCa7bd977357e2488eD",
  • "from": 0,
  • "to": 1000
}
Response samples
application/json
[
  • "0x8cb76aed9c5e336ef961265c6079c14e9cd3d2ea"
]

Activate gas pump addresses

2 credits per API call

Activate the precalulated gas pump addresses. Activating a gas pump address allows this address to send funds to other addresses.

You can activate up to 270 addresses in one call. If you need to activate more than 270 addresses, make several API calls. For example, if you need to activate 500 addresses, make an API call with 270 addresses (set up the range of their index values accordingly in the from and to request body parameters) and then make another API call with the remaining 230 addresses.

When to activate a gas pump address
Because activating a gas pump address costs some amount of gas on a blockchain, you want to activate only those addresses that will be used for sending funds to other addresses. If you know that a gas pump address will not be used for sending funds, you can leave this address not activated. The customer who uses this address will still be able to receive funds.

Depending on your business needs and requirements, you can choose when to activate the gas pump addresses. If you know for sure that all the precalculated addresses will be sending funds, you can activate all the addresses right after they have been precalculated.

Alternatively, you can set up the activation in such a way so that a gas pump address gets activated only when a specific event is triggered. For example, you can activate a gas pump address:

  • When it receives an asset for the first time
  • When the customer tries to send an asset from this address for the first time

After you make an API call to activate gas pump addresses, use the API for getting the results of the address activation transaction.

Paying the gas fee for activating gas pump addresses
You can pay the gas fees for each activation transaction yourself, or Tatum can cover it for you.

  • When paying the gas fees yourself, you must sign the transaction with either the private key of the blockchain address from which you want to pay the fees or the signature ID of that private key (if you use Key Management System, KMS).
    To pay the fees yourself, use this API with any schema of the request body except for ActivateGasPumpTatum. For example, if you are activating gas pump addresses on Ethereum and you use KMS, use the ActivateGasPumpKMS schema.
  • If you want Tatum to cover the fees, use this API with the ActivateGasPumpTatum schema of the request body.
    • On the mainnet, you have to have a paid pricing plan.
      Tatum pays the fees from its own blockchain address. Then, the fee amount paid by Tatum is converted to the number of credits, and these credits are deducted from the monthly credit allowance of your paid pricing plan. The transaction fees and the corresponding numbers of credits deducted from your allowance vary depending on what blockchain you activate the addresses.
    • On the testnet, no credits are deducted from the monthly credit allowance. You can activate gas pump addresses regardless of your pricing plan.

This API is supported for the following blockchains:

  • BNB Smart Chain
  • Celo
  • Ethereum
  • Harmony
  • Klaytn
  • Polygon
  • TRON
SecurityX-API-Key
Request
Request Body schema: application/json
One of:
chain
required
string

The blockchain to work with

Enum: "BSC" "CELO" "ETH" "MATIC" "KLAY" "ONE"
owner
required
string

The blockchain address that owns the precalculated gas pump addresses and is used to pay gas fees for operations made on the gas pump addresses; can be referred to as "master address"

from
required
integer >= 0

The start index of the range of gas pump addresses to activate

to
required
integer >= 0

The end index of the range of gas pump addresses to activate; must be greater than or equal to the value in the from parameter

feesCovered
required
boolean

Set to "true" to cover the gas fee by credits from your monthly credit allowance.

Responses
200

OK

400

Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.

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 required operation due to a logical error or invalid permissions.

500

Internal server error. There was an error on the server while processing the request.

post/v3/gas-pump/activate
Request samples
application/json
{
  • "chain": "ETH",
  • "owner": "0x2b5a0bE5940B63dE1eDdCCCa7bd977357e2488eD",
  • "from": 0,
  • "to": 200,
  • "feesCovered": true
}
Response samples
application/json
{
  • "txId": "c83f8818db43d9ba4accfe454aa44fc33123d47a4f89d47b314d6748eb0e9bc9"
}

Get the results of the address activation transaction

1 credit per API call

Get the results of the activation transaction after activating gas pump addresses.

If the activation transaction got recorded into a block, the API returns two arrays:

  • valid, with the activated gas pump addresses
  • invalid, with the gas pump addresses that for some reason did not get activated together with the reason why

If the transaction is still being processed, the API returns an error message. In this case, repeat the call later.

This API is supported for the following blockchains:

  • BNB Smart Chain
  • Celo
  • Ethereum
  • Harmony
  • Klaytn
  • Polygon
  • TRON
SecurityX-API-Key
Request
path Parameters
chain
required
string

The blockchain to work with

Enum: "BSC" "CELO" "ETH" "KLAY" "MATIC" "ONE" "TRON"
Example: ETH
txId
required
string [ 10 .. 80 ] characters

The ID of the address activation transaction

Example: 0x94Ce79B9F001E25BBEbE7C01998A78F7B27D1326
Responses
200

OK

400

Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.

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 required operation due to a logical error or invalid permissions.

500

Internal server error. There was an error on the server while processing the request.

get/v3/gas-pump/address/{chain}/{txId}
Request samples 
Response samples 
application/json
{
  • "valid": [
    ],
  • "invalid": [
    ]
}
Check whether the gas pump address with a specified index is activated
1 credit per API call


Check whether the gas pump address with a specified index is activated and can send funds to other addresses.


You can use this API when a customer initiates a fund transfer and you need to check whether their gas pump address is allowed to send funds.
 

This API is supported for the following blockchains:


    

  • BNB Smart Chain
    • 

  • Celo
    • 

  • Ethereum
    • 

  • Harmony
    • 

  • Klaytn
    • 

  • Polygon
    • 

  • TRON
    • 



SecurityX-API-Key 
Request 
path Parameters
chain
required
string
The blockchain to work with


 Enum: "BSC" "CELO" "ETH" "MATIC" "KLAY" "ONE" "TRON"  
 Example:  ETH
owner
required
string
The blockchain address that owns the gas pump address to check; can be referred to as "master address"


 
index
required
number
The index of the gas pump address to check


 
Responses 
200
OK


400
Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.


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 required operation due to a logical error or invalid permissions.


500
Internal server error. There was an error on the server while processing the request.


get/v3/gas-pump/activated/{chain}/{owner}/{index}
Request samples 
Response samples 
application/json
{
  • "activated": true
}
Transfer an asset from a gas pump address
2 credits per API call


Transfer (send) an asset from a gas pump address to the other address.


This operation is usually performed by users in your custodial application: a user who has a gas pump address assigned wants to transfer an asset to some address on the blockchain.


The gas fee for sending the asset 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 asset:


    

  • The gas pump address must be activated.
    To check whether the gas pump address is activated, use this API.
    • 

  • The gas pump address must be the owner of the asset.
    • 



With this API, you can send only one asset per API call. If you want to send multiple assets, use the API for transferring multiple assets from a gas pump account.


This API is supported for the following blockchains:


    

  • BNB Smart Chain
    • 

  • Celo
    • 

  • Ethereum
    • 

  • Harmony
    • 

  • Klaytn
    • 

  • Polygon
    • 

  • TRON
    • 

  • XinFin
    • 



Signing a transaction

When transferring an asset, 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) and provide the signature ID instead of the private key in the API. Alternatively, you can use the Tatum JavaScript client.


SecurityX-API-Key 
Request 
Request Body schema: application/json
One of:
chain
required
string
The blockchain to work with


 Enum: "BSC" "ETH" "KLAY" "MATIC" "ONE" "XDC"  
custodialAddress
required
string  = 42 characters 
The gas pump address that transfers the asset; this is the address that you precalculated and activated earlier and that is assigned to a customer in your custodial application; this is not the "master address"


 
recipient
required
string  = 42 characters 
The blockchain address that receives the asset


 
contractType
required
number
The type of the asset to transfer. Set 0 for fungible tokens (ERC-20 or equivalent), 1 for NFTs (ERC-721 or equivalent), 2 for Multi Tokens (ERC-1155 or equivalent), or 3 for native blockchain currencies.


 Enum: 0 1 2 3  
tokenAddress
string  = 42 characters 
(Only if the asset is a fungible token, NFT, or Multi Token) The address of the token to transfer. Do not use if the asset is a native blockchain currency.


 
amount
string^[+]?((\d+(\.\d*)?)|(\.\d+))$
(Only if the asset is a fungible token, Multi Token, or native blockchain currency) The amount of the asset to transfer. Do not use if the asset is an NFT.


 
tokenId
string  <= 256 characters 
(Only if the asset is a Multi Token or NFT) The ID of the token to transfer. Do not use if the asset is a fungible token or native blockchain currency.


 
fromPrivateKey
required
string  = 66 characters 
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


 
object (CustomFee) 
The custom defined fee; if not present, will be calculated automatically


 
gasPrice
required
string^[+]?\d+$
The price for one gas unit (in Gwei)


 
gasLimit
required
string^[+]?\d+$
The maximum number of gas units that you are willing to spend on processing the transaction at the provided gas price


 
Responses 
200
OK


400
Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.


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 required operation due to a logical error or invalid permissions.


500
Internal server error. There was an error on the server while processing the request.


post/v3/blockchain/sc/custodial/transfer
Request samples 
application/json
{
  • "chain": "ETH",
  • "custodialAddress": "0x687422eEA2cB73B5d3e242bA5456b782919AFc85",
  • "recipient": "0xe242bA5456b782919AFc85687422eEA2cB73B5d3",
  • "contractType": 0,
  • "fromPrivateKey": "0x05e150c73f1920ec14caa1e0b6aa09940899678051a78542840c2668ce5080c2"
}
Response samples 
application/json
{
  • "txId": "c83f8818db43d9ba4accfe454aa44fc33123d47a4f89d47b314d6748eb0e9bc9"
}
Transfer multiple assets from a gas pump address
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.
    To check whether the gas pump address is activated, use this API.
    • 

  • 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.


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) and provide the signature ID instead of the private key in the API. Alternatively, you can use the Tatum JavaScript client.


SecurityX-API-Key 
Request 
Request Body schema: application/json
One of:
chain
required
string
The blockchain to work with


 Enum: "BSC" "ETH" "KLAY" "MATIC" "ONE" "XDC"  
custodialAddress
required
string  = 42 characters 
The gas pump address that transfers the assets; this is the address that you precalculated and activated earlier and that is assigned to a customer in your custodial application; this is not the "master address"


 
recipient
required
Array of strings
The blockchain address that receives the assets


 
contractType
required
Array of numbers
The type of the assets to transfer. Set 0 for fungible tokens (ERC-20 or equivalent), 1 for NFTs (ERC-721 or equivalent), 2 for Multi Tokens (ERC-1155 or equivalent), or 3 for native blockchain currencies.


Items Enum: 0 1 2 3  
tokenAddress
required
Array of strings
    

  • 
If the assets are fungible tokens, NFTs, or Multi Tokens, set this parameter to the array of the addresses of the tokens to transfer:
    
"tokenAddress": ["0x782919AFc85eEA2cB736874225456bB5d3e242bA","0x74225456bB5d3e242bA782919AFc85eEA2cB7368",...,"0x3e242bA78274225456bB52cB7368d919AFc85eEA"]

    • 

  • 
If the assets are a native blockchain currency, set this parameter to the array of zeros, a zero per currency:
    
"tokenAddress": ["0","0",...,"0"]

    • 



 
amount
required
Array of strings
    

  • 
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:
    
"amount": ["100000","15000",...,"250000"]

    • 

  • 
If the assets are NFTs, set this parameter to the array of zeros, a zero per NFT:
    
"amount": ["0","0",...,"0"]

    • 



 
tokenId
required
Array of strings
    

  • 
If the assets are Multi Tokens or NFTs, set this parameter to the array of the IDs of the tokens to transfer:
    
"tokenId": ["12","13",...,"24"]
 
    • 

  • 
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:
    
"tokenId": ["0","0",...,"0"]

    • 



 
fromPrivateKey
required
string  = 66 characters 
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


 
object (CustomFee) 
The custom defined fee; if not present, will be calculated automatically


 
gasPrice
required
string^[+]?\d+$
The price for one gas unit (in Gwei)


 
gasLimit
required
string^[+]?\d+$
The maximum number of gas units that you are willing to spend on processing the transaction at the provided gas price


 
Responses 
200
OK


400
Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.


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 required operation due to a logical error or invalid permissions.


500
Internal server error. There was an error on the server while processing the request.


post/v3/blockchain/sc/custodial/transfer/batch
Request samples 
application/json
{
  • "chain": "ETH",
  • "custodialAddress": "0x687422eEA2cB73B5d3e242bA5456b782919AFc85",
  • "recipient": [
    ],
  • "contractType": [
    ],
  • "tokenAddress": [
    ],
  • "amount": [
    ],
  • "tokenId": [
    ],
  • "fromPrivateKey": "0x05e150c73f1920ec14caa1e0b6aa09940899678051a78542840c2668ce5080c2"
}
Response samples 
application/json
{
  • "txId": "c83f8818db43d9ba4accfe454aa44fc33123d47a4f89d47b314d6748eb0e9bc9"
}
Approve the transfer of an asset from a gas pump address
2 credits per API call


Allow another blockchain address (the spender parameter in the request body) to transfer the asset from a gas pump address on behalf of the master address.


Use this API when the customer using the gas pump address sells assets on a marketplace or auction. After the customer creates a listing of the asset, they have to allow the marketplace/auction smart contract to transfer the asset to the buyer after the asset has been bought.


The asset can be one of the following types:


    

  • Fungible token (ERC-20 or equivalent)
    • 

  • NFT (ERC-721 or equivalent)
    • 

  • Multi Token (ERC-1155 or equivalent)
    • 



This API is supported for the following blockchains:


    

  • BNB Smart Chain
    • 

  • Celo
    • 

  • Ethereum
    • 

  • Harmony
    • 

  • Klaytn
    • 

  • Polygon
    • 

  • XinFin
    • 



Signing a transaction

When approving the transfer of an asset, 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) and provide the signature ID instead of the private key in the API. Alternatively, you can use the Tatum JavaScript client.


SecurityX-API-Key 
Request 
Request Body schema: application/json
One of:
chain
required
string
The blockchain to work with


 Enum: "BSC" "ETH" "KLAY" "MATIC" "ONE" "XDC"  
custodialAddress
required
string  = 42 characters 
The gas pump address that holds the asset


 
spender
required
string  = 42 characters 
The blockchain address to allow the transfer of the asset from the gas pump address


 
contractType
required
number
The type of the asset to transfer. Set 0 for fungible tokens (ERC-20 or equivalent), 1 for NFTs (ERC-721 or equivalent), or 2 for Multi Tokens (ERC-1155 or equivalent).


 Enum: 0 1 2  
tokenAddress
required
string  = 42 characters 
The address of the asset to transfer


 
amount
string^[+]?((\d+(\.\d*)?)|(\.\d+))$
(Only if the asset is a fungible token or Multi Token) The amount of the asset to transfer. Do not use if the asset is an NFT.


 
tokenId
string  <= 256 characters 
(Only if the asset is a Multi Token or NFT) The ID of the token to transfer. Do not use if the asset is a fungible token.


 
fromPrivateKey
required
string  = 66 characters 
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


 
object (CustomFee) 
The custom defined fee; if not present, will be calculated automatically


 
gasPrice
required
string^[+]?\d+$
The price for one gas unit (in Gwei)


 
gasLimit
required
string^[+]?\d+$
The maximum number of gas units that you are willing to spend on processing the transaction at the provided gas price


 
Responses 
200
OK


400
Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.


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 required operation due to a logical error or invalid permissions.


500
Internal server error. There was an error on the server while processing the request.


post/v3/blockchain/sc/custodial/approve
Request samples 
application/json
{
  • "chain": "ETH",
  • "custodialAddress": "0x687422eEA2cB73B5d3e242bA5456b782919AFc85",
  • "spender": "0xe242bA5456b782919AFc85687422eEA2cB73B5d3",
  • "contractType": 0,
  • "tokenAddress": "0x782919AFc85eEA2cB736874225456bB5d3e242bA",
  • "fromPrivateKey": "0x05e150c73f1920ec14caa1e0b6aa09940899678051a78542840c2668ce5080c2"
}
Response samples 
application/json
{
  • "txId": "c83f8818db43d9ba4accfe454aa44fc33123d47a4f89d47b314d6748eb0e9bc9"
}
Generate a gas pump wallet addressDeprecated
This API is deprecated.
To start with the gas pump, use the API for precalculating the gas pump addresses.



2 credits per API call


Generate new gas pump smart contract address on the blockchain. This address enables custodial providers to receive native assets, ERC20 / ERC721 / ERC1155 tokens on behalf of their customers on dedicated blockchain address, but in the same time it can initiate transfer of those assets away. Gas required for the transfer from that address is going to be deducted from the providers address - the one, which was used to generate the address on the blockchain.


This operation deploys a smart contract on the blockchain.


For paid plans, it is possible to pay for the gas costs - you don't have to provide private key or signatureId. Blockchain fees will be covered by your credits.


This API is supported for the following blockchains:


    

  • BNB Smart Chain
    • 

  • Celo
    • 

  • Ethereum
    • 

  • Harmony
    • 

  • Klaytn
    • 

  • Polygon
    • 

  • TRON
    • 

  • XinFin
    • 



SecurityX-API-Key 
Request 
header Parameters
x-testnet-type
string
 Default:  ethereum-sepolia
Type of Ethereum testnet. Defaults to ethereum-sepolia.


 Value: "ethereum-sepolia"  
Request Body schema: application/json
One of:
chain
required
string
Blockchain to work with.


 Enum: "ETH" "MATIC" "BSC" "ONE" "CELO"  
feesCovered
required
boolean
If set to true, blockchain fees will be covered from credits.


 
batchCount
required
number  [ 0 .. 270 ] 
Number of addresses to generate.


 
owner
required
string  [ 42 .. 43 ] characters 
Owner of the addresses.


 
Responses 
200
OK


400
Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.


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 required operation due to a logical error or invalid permissions.


500
Internal server error. There was an error on the server while processing the request.


post/v3/blockchain/sc/custodial/batch
Request samples 
application/json
{
  • "chain": "MATIC",
  • "feesCovered": true,
  • "batchCount": 270,
  • "owner": "0x8cb76aed9c5e336ef961265c6079c14e9cd3d2ea"
}
Response samples 
application/json
{
  • "txId": "c83f8818db43d9ba4accfe454aa44fc33123d47a4f89d47b314d6748eb0e9bc9"
}
Generate a custodial wallet addressDeprecated
This API is deprecated.
To start with the gas pump, use the API for precalculating the gas pump addresses.


If you built your gas pump solution using this API and the API for generating a gas pump wallet address, you can still use this API for creating more custodial addresses for your solution. However, we recommend that you switch to the API for precalculating the gas pump addresses.



2 credits per API call


Generate new gas pump smart contract address on the blockchain. It's possible to enable tokens, which should be detected and supported on that address. This address enables custodial providers to
receive native assets, ERC20 / ERC721 / ERC1155 tokens on behalf of their customers on dedicated blockchain address, but in the same time it can initiate transfer of those assets away.


Gas required for the transfer from that address is going to be deducted from the providers address - the one, which was used to generate the address on the blockchain.


There are multiple options, how this address can be setup - it cannot be changed in the future:


    

  • Native assets only - ETH, BSC, CELO, MATIC, ONE, TRX
    • 

  • Native assets + ERC20 tokens
    • 

  • Native assets + ERC721 tokens
    • 

  • Native assets + ERC1155 tokens - TRON does not support 1155 standard
    • 

  • Native assets + ERC20 + ERC721 tokens
    • 

  • Native assets + ERC20 + ERC1155 tokens - TRON does not support 1155 standard
    • 

  • Native assets + ERC721 + ERC1155 tokens - TRON does not support 1155 standard
    • 

  • Native assets + ERC20 + ERC721 + ERC1155 tokens - TRON does not support 1155 standard
    • 



All of these options could be enabled with a batch mode as well - in 1 transaction, it is possible to transfer multiple different assets from that address, e.g. ETH + USDC + ERC721 token.
Without batch mode, 3 separate transaction must have been performed.


This operation deploys a smart contract on the blockchain. More assets you will support, more intial gas will be used for address creation. Batch mode adds more gas for every type.


This API is supported for the following blockchains:


    

  • BNB Smart Chain
    • 

  • Celo
    • 

  • Ethereum
    • 

  • Harmony
    • 

  • Polygon
    • 

  • TRON (except for Multi Tokens)
    • 



SecurityX-API-Key 
Request 
Request Body schema: application/json
One of:
chain
required
string
Blockchain to work with.


 Enum: "ETH" "ONE" "BSC" "MATIC"  
fromPrivateKey
required
string  = 66 characters 
Private key of account, from which the transaction will be initiated.


 
enableFungibleTokens
required
boolean
If address should support ERC20 tokens, it should be marked as true.


 
enableNonFungibleTokens
required
boolean
If address should support ERC721 tokens, it should be marked as true.


 
enableSemiFungibleTokens
required
boolean
If address should support ERC1155 tokens, it should be marked as true.


 
enableBatchTransactions
required
boolean
If address should support batch transfers of the assets, it should be marked as true.


 
object
Custom defined fee. If not present, it will be calculated automatically.


 
gasLimit
required
string^[+]?\d+$
Gas limit for transaction in gas price.


 
gasPrice
required
string^[+]?\d+$
Gas price in Gwei.


 
nonce
number  >= 0 
The nonce to be set to the transaction; if not present, the last known nonce will be used


 
Responses 
200
OK


400
Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.


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 required operation due to a logical error or invalid permissions.


500
Internal server error. There was an error on the server while processing the request.


post/v3/blockchain/sc/custodial
Request samples 
application/json
{
  • "chain": "ETH",
  • "fromPrivateKey": "0x05e150c73f1920ec14caa1e0b6aa09940899678051a78542840c2668ce5080c2",
  • "enableFungibleTokens": false,
  • "enableNonFungibleTokens": false,
  • "enableSemiFungibleTokens": false,
  • "enableBatchTransactions": false
}
Response samples 
application/json
{
  • "txId": "c83f8818db43d9ba4accfe454aa44fc33123d47a4f89d47b314d6748eb0e9bc9"
}
Get the custodial wallet address from the transactionDeprecated
This API is deprecated.
To start with the gas pump, use the API for precalculating the gas pump addresses.


If you built your gas pump solution using the API for generating a gas pump wallet address and API for generating a custodial wallet address, you can still use this API for getting the custodial wallet address from the transaction. However, we recommend that you switch to the API for precalculating the gas pump addresses.



1 credit per API call


Get gas pump smart contract addresses from deploy transaction.


This API is supported for the following blockchains:


    

  • BNB Smart Chain
    • 

  • Celo
    • 

  • Ethereum
    • 

  • Harmony
    • 

  • Klaytn
    • 

  • Polygon
    • 

  • TRON
    • 



SecurityX-API-Key 
Request 
path Parameters
chain
required
string
Blockchain to work with


 Enum: "CELO" "MATIC" "KLAY" "ETH" "ONE" "BSC" "TRON"  
hash
required
string
Transaction hash


 
 Example:  0xe6e7340394958674cdf8606936d292f565e4ecc476aaa8b258ec8a141f7c75d7
Responses 
200
OK


400
Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.


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 required perform operation due to logical error or invalid permissions.


500
Internal server error. There was an error on the server while processing the request.


get/v3/blockchain/sc/custodial/{chain}/{hash}
Request samples 
Response samples 
application/json
[
  • "0xc21C81ef03f98898Fb155E00C364e8a7b9D158b8"
]
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