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To get started, you first want to check if the user has any vaults - and if not - to create a vault for them. First, import the INTU package, ethers, and setup your signer.

App.jsx
import { ethers } from "ethers";
import { getVaults,createVault } from '@intuweb3/exp-web-kit';
const provider = new ethers.providers.Web3Provider(window.ethereum);
await provider.send("eth_requestAccounts", []);
const signer = await provider.getSigner();
const signerAddress = await provider.getSigner().getAddress();

Then, retrieve the user's accounts:

App.jsx
const userVaults = getVaults(signerAddress, web3Prprovidervider);
console.log(userVaults);

If the user doesn't yet have an INTU MPC account, lets create a new one

Propose an account​

import { createIntuAccount } from "@intuweb3/web-exp";
/*
The first parameter to pass is an array of the addresses that should be a part of this new vault
RotateThreshold = % of participants required to add or remove someone from the vault
TransactionThreshold = % of participants required to send a transaction from the vault
AdminThreshold = % of participants required to change a threshold %, change the name, etc.
*/
await create_intu_Account([0x1, 0x2, 0x3], 
"MyEasyToReadVaultName",  
rotateThreshold,
txThreshold,
adminThreshold, 
signer)

Register each user in the account​

Have each user register into the account

*Note, each step of the process (preRegister, automateRegistration, registerAllSteps) has to be completed by each user before the next step can be completed

*Everyone must perform pre-registration before registration step1 can be performed, etc.

import { preRegistration, registerStep1, registerStep2, registerStep3, completeVault, getVaults } from "@intuweb3/web-exp";
let myVaults = getVaults("0x12345_user_address", provider);
await preRegistration(vaultAddress, signer);
//then
await automateRegistration(vaultAddress, signer):
//then
await registerAllSteps(vaultAddress, signer);

Complete account​

Here we confirm each user in the account, and determine the master public address (EOA) for the MPC account, and lock it in on the blockchain.

//JUST ONE USER NEEDS TO PERFORM THIS FUNCTION
await completeVault(vaultAddress, signer); // just once