> ## Documentation Index
> Fetch the complete documentation index at: https://docs.exponent.finance/llms.txt
> Use this file to discover all available pages before exploring further.

# Deposit Liquidity

> Deposit a supported token into the vault and receive LP tokens

The `ixsDepositLiquidity` method builds transaction instructions that deposit tokens into the vault and mint LP tokens to the depositor.

## Usage

```typescript theme={null}
import { ExponentVault } from "@exponent-labs/exponent-sdk";
import { Connection, PublicKey, Transaction, sendAndConfirmTransaction } from "@solana/web3.js";
const connection = new Connection("https://api.mainnet-beta.solana.com");
const vault = await ExponentVault.load({ connection, address: vaultAddress });

const ixs = await vault.ixsDepositLiquidity({
  depositor: wallet.publicKey,
  mint: new PublicKey("EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"), // USDC
  tokenAmountIn: 100_000_000n,
  minLpOut: 0n,
});

const tx = new Transaction().add(...ixs);
const signature = await sendAndConfirmTransaction(connection, tx, [wallet]);
```

## Required Parameters

| Parameter       | Type               | Description                                                   |
| --------------- | ------------------ | ------------------------------------------------------------- |
| `depositor`     | `PublicKey`        | The depositor's wallet public key                             |
| `mint`          | `PublicKey`        | The token mint to deposit. Must match a vault token entry     |
| `tokenAmountIn` | `bigint \| number` | Amount of tokens to deposit in native units                   |
| `minLpOut`      | `bigint \| number` | Minimum LP tokens to receive. Set to `0` to accept any amount |

## Optional Parameters

| Parameter                | Type            | Description                                                                              |
| ------------------------ | --------------- | ---------------------------------------------------------------------------------------- |
| `tokenSrc`               | `PublicKey`     | Source token account. Defaults to the depositor's ATA for `mint`                         |
| `entryTokenVault`        | `PublicKey`     | Vault token escrow. Defaults to the Squads-controlled account defined in the token entry |
| `tokenLpDst`             | `PublicKey`     | LP token destination. Defaults to the depositor's ATA for the LP mint                    |
| `tokenProgram`           | `PublicKey`     | Token program. Defaults to `TOKEN_PROGRAM_ID`                                            |
| `extraRemainingAccounts` | `AccountMeta[]` | Additional accounts (e.g., Kamino obligation accounts)                                   |

## Returns

Returns a `Promise<TransactionInstruction[]>` — an array of instructions that deposit tokens into the vault and mint LP tokens.

## LP Token Calculation

The amount of LP tokens minted is proportional to the deposit relative to total vault AUM:

```
LP out = (token_amount_in_base × total_lp_supply) / total_aum_in_base
```

The `minLpOut` parameter protects against price movements between transaction construction and execution.

<Tip>
  To estimate the exchange rate before depositing, read `vault.state.financials` for AUM and call `vault.fetchLpTokenSupply()` for the current LP supply.
</Tip>