> ## 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.

# Provide Liquidity Classic

> Provide liquidity using both base assets and PT tokens

The `ixProvideLiquidityClassic` method on the `MarketThree` class provides liquidity using a combination of base assets and PT tokens. Unlike `ixWrapperProvideLiquidity` which only takes base assets, this method allows you to supply PT tokens you already hold alongside base assets.

## Usage

```typescript theme={null}
import { MarketThree, LOCAL_ENV } from "@exponent-labs/exponent-sdk";
import { Connection, PublicKey, Transaction, sendAndConfirmTransaction, Keypair } from "@solana/web3.js";

const connection = new Connection("https://api.mainnet-beta.solana.com");
const market = await MarketThree.load(LOCAL_ENV, connection, marketAddress);

const { ixs, setupIxs, signers } = await market.ixProvideLiquidityClassic({
  depositor: wallet.publicKey,
  amountBase: 5_000_000_000n,
  amountPt: 5_000_000_000n,
  minLpOut: 9_000_000_000n,
  lowerTickApy: 0.05,  // 5% APY
  upperTickApy: 0.15,  // 15% APY
});

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

<Warning>
  The `signers` array contains the generated LP position keypair. You **must** include it when signing the transaction.
</Warning>

## Required Parameters

| Parameter      | Type        | Description                             |
| -------------- | ----------- | --------------------------------------- |
| `depositor`    | `PublicKey` | The depositor's wallet public key       |
| `amountBase`   | `bigint`    | Amount of base asset to provide         |
| `amountPt`     | `bigint`    | Amount of PT tokens to provide          |
| `minLpOut`     | `bigint`    | Minimum amount of LP tokens to receive  |
| `lowerTickApy` | `number`    | Lower bound APY for the liquidity range |
| `upperTickApy` | `number`    | Upper bound APY for the liquidity range |

## Optional Parameters

| Parameter            | Type                     | Description                                                |
| -------------------- | ------------------------ | ---------------------------------------------------------- |
| `tokenSyDepositor`   | `PublicKey`              | Intermediate SY token account. Defaults to depositor's ATA |
| `tokenYtDepositor`   | `PublicKey`              | Destination YT token account. Defaults to depositor's ATA  |
| `tokenPtDepositor`   | `PublicKey`              | Source PT token account. Defaults to depositor's ATA       |
| `tokenBaseDepositor` | `PublicKey`              | Source base token account. Defaults to depositor's ATA     |
| `lpPositionParam`    | `Keypair` \| `PublicKey` | LP position account. Defaults to a generated Keypair       |

## Returns

Returns a `Promise<PreparedInstruction>` with the following structure:

```typescript theme={null}
{
  ixs: TransactionInstruction[],      // Main instructions to execute
  setupIxs: TransactionInstruction[], // Setup instructions for creating ATAs
  signers?: Keypair[]                 // Optional signers (lpPosition if generated)
}
```