> ## 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.

# Wrapper Deposit

> Deposit base assets into a Senior or Junior tranche

The `ixWrapperDeposit` instruction deposits base assets into a tranching market. The wrapper mints SY from the base asset, deposits SY into the selected tranche, and mints tranche LP shares.

## Usage

```typescript theme={null}
import { Transaction, sendAndConfirmTransaction } from "@solana/web3.js";
import { TrancheSide } from "@exponent-labs/exponent-sdk/client/tranching";

const { ixs, setupIxs } = await market.ixWrapperDeposit({
  user: wallet.publicKey,
  trancheSide: TrancheSide.Senior,
  amountBase: 1_000_000_000n, // raw base-token units
  minLpOut: 0n,               // raw Senior LP units; set above 0 for output protection
});

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

## Parameters

| Parameter      | Type          | Required | Description                                                                      |
| -------------- | ------------- | -------- | -------------------------------------------------------------------------------- |
| `user`         | `PublicKey`   | Yes      | Wallet depositing into the market                                                |
| `trancheSide`  | `TrancheSide` | Yes      | `TrancheSide.Senior` or `TrancheSide.Junior`                                     |
| `amountBase`   | `bigint`      | Yes      | Base asset amount to deposit, in raw base-token units                            |
| `minLpOut`     | `bigint`      | No       | Minimum selected-tranche LP shares to receive, in raw LP units. Defaults to `0n` |
| `setupPayer`   | `PublicKey`   | No       | Payer for associated token account setup. Defaults to `user`                     |
| `tokenBaseSrc` | `PublicKey`   | No       | Base token source account. Defaults to the user's base ATA                       |
| `tokenSySrc`   | `PublicKey`   | No       | Temporary/user SY token account. Defaults to the user's SY ATA                   |
| `tokenLpDst`   | `PublicKey`   | No       | Destination LP token account. Defaults to the selected LP ATA                    |
| `tokenProgram` | `PublicKey`   | No       | SPL Token program for SY and LP token accounts                                   |

## Returns

Returns an object with:

* `ixs` - Instructions that perform the SY mint, tranche deposit, and flavor-specific pre/post steps
* `setupIxs` - Associated token account setup instructions for base, SY, and LP token accounts

<Tip>
  Always include `setupIxs` before `ixs` in the transaction. The setup instructions are idempotent.
</Tip>

<Warning>
  Deposits update market NAV before minting LP shares. Use `minLpOut` if the transaction depends on a specific output amount.
</Warning>