# Vault

The Vault class wraps a given vault contract and provides all necessary view and write functions to interact with any given vault.

> Currently we are using the word **`Adapter`** and **`Strategy`** interchangeably. In V2 we will simplify this wording to name every yield-earning contract a **`Strategy`**.

### Initialization

The Vault class must be created for each vault contract you wish to interact with. To initialize it, you'll need the vault's address, a public client for reading, and a wallet client for making changes. We use viem's public and wallet clients.

* The public client fetches data from the chain using a JSON-RPC API
* The wallet client connects with an Externally Owned Account (EOA) to enable user transaction signing.

To find the addresses of all existing vaults on a chain, you can use the "allVaults" function of the VaultRegistry contract, such as through etherscan.

Find current VaultRegistry addresses here:

```tsx
mainnet: "0x007318Dc89B314b47609C684260CfbfbcD412864"
optimism: "0xdD0d135b5b52B7EDd90a83d4A4112C55a1A6D23A"
arbitrum: "0xB205e94D402742B919E851892f7d515592a7A6cC"
polygon: "0x2246c4c469735bCE95C120939b0C078EC37A08D0"
bsc: "0x25172C73958064f9ABc757ffc63EB859D7dc2219"
```

We are developing a VaultRegistry class for our SDK to simplify this process. Additionally, our app will soon include a dedicated page for you to conveniently view and manage all your vaults.

To initialize the Vault class simply follow this example:

```tsx
const vaultAddress = "0x5d344226578DC100b2001DA251A4b154df58194f",
const publicClient = createPublicClient({
  chain: mainnet,
  transport: http()
})
const walletClient = createWalletClient({
  chain: mainnet,
  transport: custom(window.ethereum)
})

const vault = new Vault(vaultAddress, publicClient, walletClient);
```

> Check our [GitHub](https://github.com/Popcorn-Limited/vaultcraft-sdk/blob/main/docs/vault.md) for available methods.