How to I interact smart contract through Firblocks

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1

Is there a way to interact with the smart contract? As add addreses to a contract, executing a contract etc? I cant find it in the API reference. (it has only basic topic like “create a contract”, “find specific contract”, etc)

2

@yogevh
The first option is to use the Create Transaction endpoint and use make sure the operation is CONTRACT_CALL. That is, assuming you have already built a contract transaction using web3py, web3js or etherJS. You can find a few examples for this here:

You can also review the Ethereum Development article for interacting with Smart contracts, or the Ethereum Smart Contract Development article for deploying new contracts.

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3

Is there any example of how to send a smart contract transaction (to trigger an api inside?) I couldn’t find any in the above.

4

Hi @yogevh, here’s an example:

fireblocksApiClient.createTransaction({
    operation: TransactionOperation.CONTRACT_CALL,
    assetId: "ETH",
    source: {
        type: PeerType.VAULT_ACCOUNT,
        id: "0" /* Source Vault Account ID */
    },
    destination: {
        type: PeerType.CONTRACT,
        id: /*externalWalletId here*/
    },
    note: "Contract Call Transaction",
    amount: "0",
    extraParameters: {
        contractCallData: "0x38ed17390000000000000000000000000000000000000000000000000000000bb6c179cc" /* Data Payload */
    }
});

The assetId indicates that I want to call a contract on Ethereum.
The source object indicates that I want to call the contract from my Ethereum address in vault 0.
The destination object indicates that I want to call a whitelisted contract address.
You can pass value via the amount field.
And the payload is passed in extraParameters.contractCallData.

5

Hi Yogev,

You can also use our web3 provider with web3.js or ethers.js libraries…
An example of such usage with web3.js can be found below:

const { FireblocksWeb3Provider, ChainId } = require("@fireblocks/fireblocks-web3-provider")
const Web3 = require("web3");

const eip1193Provider = new FireblocksWeb3Provider({
    privateKey: "<your_private_key_file_path>",
    apiKey: "<your_api_key>",
    vaultAccountIds: "<vault_account_id/s>",
    chainId: ChainId.GOERLI,
});

(async() => {
    const web3 = new Web3(eip1193Provider);
    const myAddress = await web3.eth.getAccounts()
    const nonce = await web3.eth.getTransactionCount(myAddress[0], 'latest');

    const transaction = {
        'to': 'some_dest_address',
        'value': 101,
        'from': myAddress[0],
        'gas': 30000,
        'maxFeePerGas': 1000000108,
        'nonce': nonce,
       };
    
    const tx = await web3.eth.sendTransaction(transaction, myAddress[0], "")
    console.log(tx)
})();
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