> ## 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 PT and SY tokens as concentrated liquidity

The `ixDepositLiquidity` method on the `MarketThree` class creates a new LP position by depositing PT and SY tokens within a specified APY range.

<Note>
  This is a low-level method that requires you to already hold PT and SY tokens. To provide liquidity from base assets (e.g., USDC), use [`ixWrapperProvideLiquidity`](/clmm/typescript/instructions/ix-wrapper-provide-liquidity) or [`ixProvideLiquidityClassic`](/clmm/typescript/instructions/ix-provide-liquidity-classic) instead.
</Note>

## Usage

```typescript theme={null}
import { MarketThree, LOCAL_ENV } 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 market = await MarketThree.load(LOCAL_ENV, connection, marketAddress);

const { ix, signers } = market.ixDepositLiquidity({
  depositor: wallet.publicKey,
  ptInIntent: 5_000_000_000n,   // max PT to deposit
  syInIntent: 5_000_000_000n,   // max SY to deposit
  lowerTickKey: 0.05,           // 5% APY lower bound
  upperTickKey: 0.15,           // 15% APY upper bound
});

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

<Warning>
  The `signers` value is the generated LP position keypair. You **must** include it when signing the transaction, otherwise the transaction will fail.
</Warning>

<Tip>
  The `lowerTickKey` and `upperTickKey` parameters are decimal numbers — use `0.05` for 5% APY, not `500` or `50000`.
</Tip>

## Required Parameters

| Parameter      | Type        | Description                             |
| -------------- | ----------- | --------------------------------------- |
| `depositor`    | `PublicKey` | The depositor's wallet public key       |
| `ptInIntent`   | `bigint`    | Maximum amount of PT to deposit         |
| `syInIntent`   | `bigint`    | Maximum amount of SY to deposit         |
| `lowerTickKey` | `number`    | Lower bound APY for the liquidity range |
| `upperTickKey` | `number`    | Upper bound APY for the liquidity range |

## Optional Parameters

| Parameter    | Type        | Description                                          |
| ------------ | ----------- | ---------------------------------------------------- |
| `ptSrc`      | `PublicKey` | Source PT token account. Defaults to depositor's ATA |
| `sySrc`      | `PublicKey` | Source SY token account. Defaults to depositor's ATA |
| `lpPosition` | `Keypair`   | LP position keypair. Defaults to a generated Keypair |

## Returns

Returns an object with:

* `ix` — The `TransactionInstruction` that deposits liquidity
* `signers` — The LP position `Keypair` (must be included when signing)