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Deploy custom Smart Contracts

EVM Based Protocols (Ethereum-virtual-machine)
const sdk = new CryptumSdk({
environment: 'testnet',
apiKey: 'YOUR-API-KEY'
})

Call smart contract method

sdk.contract.callMethod(opts)

Call a method of a smart contract and receive its value without creating a transaction in the blockchain.
  • opts.contractAddress (string) (required) - contract address of the smart contract.
  • opts.contractAbi (array) (required) - json interface of the method (for more info on contract ABI).
  • opts.method (string) (required) - smart contract method.
  • opts.params (array) - parameters to be passed to the method.
  • opts.protocol (string) (required) - EVMs only.
const { result } = await sdk.contract.callMethod({
contractAddress: '0x2B751008...6a763e72788Db9Ca',
contractAbi: [
{
constant: true,
inputs: [],
name: 'message',
outputs: [
{
internalType: 'string',
name: '',
type: 'string',
},
],
payable: false,
stateMutability: 'view',
type: 'function',
},
],
method: 'message',
params: [],
protocol: 'CELO'
})
console.log(result)
// Result value from smart contract method

Create smart contract call transaction

sdk.contract.callMethodTransaction(opts)

Call a method of a smart contract that will generate a transaction in the blockchain.
  • opts.wallet (Wallet) (required) - wallet calling the smart contract and signing this transaction.
  • opts.contractAddress (string) (required) - contract address of the smart contract.
  • opts.contractAbi (array) (required) - json interface of the method (for more info on contract ABI).
  • opts.method (string) (required) - smart contract method.
  • opts.params (array) - parameters to be passed to the method.
  • opts.protocol (string) (required) - EVMs only.
const { hash } = await sdk.contract.callMethodTransaction({
wallet,
contractAddress: '0x3f2f3D45196...8f530165eCb93e772',
contractAbi: [
{
constant: false,
inputs: [
{ name: 'param1', type: 'string' },
{ name: 'param2', type: 'uint256' },
{ name: 'param3', type: 'uint256' },
],
name: 'executeMethodName',
outputs: [{ name: '', type: 'bool' }],
payable: false,
stateMutability: 'nonpayable',
type: 'function',
},
],
method: 'executeMethodName',
params: ['param1', 2, 3],
protocol: 'BSC'
})

Deploy a smart contract

sdk.contract.deploy(opts)

Deploy a smart contract source code written in Solidity to the blockchain.
  • opts.wallet (Wallet) (required) - wallet deploying the smart contract.
  • opts.contractName (string) (required) - main contract name. There could be many contracts in the source code, but you must specify which one is the main one to initialize it after deployment.
  • opts.params (array) (required) - parameters to be passed to the constructor of the main contract.
  • opts.source (string) (required) - source code of the contract encoded in UTF-8.
  • opts.protocol (string) (required) - EVMs only.
const { hash } = await sdk.contract.deploy({
wallet,
contractName: 'HelloWorld',
params: ['hello'],
source: fs.readFileSync(`${__dirname}/contracts/HelloWorld.sol`, { encoding: 'utf8' }),
protocol: 'POLYGON'
})
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Last modified 5mo ago