> ## 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.

# Collect Emission

> Collect emission rewards from a yield position via the Vault

The `ixCollectEmission` method on the `Vault` class creates a transaction instruction that collects a specific emission reward from a yield position. Emissions are auxiliary reward tokens (e.g., governance tokens) distributed to YT depositors.

## Usage

```typescript theme={null}
import { Vault, LOCAL_ENV, amount } 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 Vault.load(LOCAL_ENV, connection, vaultAddress);

// Collect all of emission at index 0
const ix = vault.ixCollectEmission({
  owner: wallet.publicKey,
  emissionIndex: 0,
  amount: amount("All"),
});

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

## Required Parameters

| Parameter       | Type        | Description                                  |
| --------------- | ----------- | -------------------------------------------- |
| `owner`         | `PublicKey` | The owner's wallet public key                |
| `emissionIndex` | `number`    | Index of the emission to collect (0-based)   |
| `amount`        | `Amount`    | `amount("All")` or `amount("Some", [value])` |

## Optional Parameters

| Parameter     | Type        | Description                                                 |
| ------------- | ----------- | ----------------------------------------------------------- |
| `emissionDst` | `PublicKey` | Destination emission token account. Defaults to owner's ATA |

## Returns

Returns a `TransactionInstruction` that transfers accrued emission rewards to the owner.

<Tip>
  Use `vault.vaultEmissions` to inspect available emissions and their mints before collecting.
</Tip>