> ## 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 Market Offer

> Low-level instruction to execute a market order with automatic SY minting/redemption

# createWrapperMarketOfferInstruction

Builds a raw instruction that executes a market order against existing offers with automatic SY minting/redemption and YT deposit/withdrawal. This combines the SY operations and market order execution atomically.

## Usage

```typescript theme={null}
import { createWrapperMarketOfferInstruction } from "@exponent-labs/exponent-sdk/client/orderbook";
import { PublicKey, SystemProgram } from "@solana/web3.js";

const ix = createWrapperMarketOfferInstruction(
  {
    trader: wallet.publicKey,
    orderbook: orderbookAddress,
    vault: vaultAddress,
    cpiAccountOrderbook: cpiAccountsOrderbook,
    yieldPosition: yieldPositionPda,
    tokenEscrowYt: orderbookEscrowYt,
    tokenEscrowSy: orderbookEscrowSy,
    tokenEscrowPt: orderbookEscrowPt,
    tokenSyTrader: userSyTokenAccount,
    tokenYtTrader: userYtTokenAccount,
    tokenPtTrader: userPtTokenAccount,
    systemProgram: SystemProgram.programId,
    syProgram: syProgramId,
    tokenProgram: TOKEN_PROGRAM_ID,
    exponentCore: EXPONENT_CORE_PROGRAM_ID,
    addressLookupTable: vaultLookupTable,
    eventAuthority: eventAuthorityPda,
    program: EXPONENT_ORDERBOOK_PROGRAM_ID,
  },
  {
    maxPriceApy: 8.0,
    amountBase: BigInt(500_000),
    minAmountOut: BigInt(490_000),
    offerType: { buyYt: {} },
    virtualOffer: false,
    mintSyOrWithdrawYtAccountsUntil: 0,
    redeemSyOrDepositYtAccountsUntil: 0,
  }
);
```

## Accounts

| Name                  | Type        | Signer | Writable | Description                           |
| --------------------- | ----------- | ------ | -------- | ------------------------------------- |
| `trader`              | `PublicKey` | Yes    | No       | The trader executing the market order |
| `orderbook`           | `PublicKey` | No     | Yes      | Orderbook account                     |
| `vault`               | `PublicKey` | No     | Yes      | Vault account                         |
| `cpiAccountOrderbook` | `PublicKey` | No     | No       | CPI accounts orderbook                |
| `yieldPosition`       | `PublicKey` | No     | Yes      | User's yield position PDA             |
| `tokenEscrowYt`       | `PublicKey` | No     | Yes      | Orderbook YT escrow account           |
| `tokenEscrowSy`       | `PublicKey` | No     | Yes      | Orderbook SY escrow account           |
| `tokenEscrowPt`       | `PublicKey` | No     | Yes      | Orderbook PT escrow account           |
| `tokenSyTrader`       | `PublicKey` | No     | Yes      | Trader's SY token account             |
| `tokenYtTrader`       | `PublicKey` | No     | Yes      | Trader's YT token account             |
| `tokenPtTrader`       | `PublicKey` | No     | Yes      | Trader's PT token account             |
| `systemProgram`       | `PublicKey` | No     | No       | System program                        |
| `syProgram`           | `PublicKey` | No     | No       | SY program                            |
| `tokenProgram`        | `PublicKey` | No     | No       | SPL Token program                     |
| `exponentCore`        | `PublicKey` | No     | No       | Exponent Core program                 |
| `addressLookupTable`  | `PublicKey` | No     | No       | Vault address lookup table            |
| `eventAuthority`      | `PublicKey` | No     | No       | Event authority PDA                   |
| `program`             | `PublicKey` | No     | No       | Exponent Orderbook program            |

## Args

| Name                               | Type        | Description                                                                |
| ---------------------------------- | ----------- | -------------------------------------------------------------------------- |
| `maxPriceApy`                      | `number`    | Maximum acceptable price as implied APY (f64)                              |
| `amountBase`                       | `bigint`    | Amount of base asset to use (in base units)                                |
| `minAmountOut`                     | `bigint`    | Minimum amount of output tokens to receive                                 |
| `offerType`                        | `OfferType` | Type of offer (SellYt or BuyYt)                                            |
| `virtualOffer`                     | `boolean`   | Whether this is a virtual offer                                            |
| `mintSyOrWithdrawYtAccountsUntil`  | `number`    | Index into remaining accounts for SY minting or YT withdrawal CPI accounts |
| `redeemSyOrDepositYtAccountsUntil` | `number`    | Index into remaining accounts for SY redemption or YT deposit CPI accounts |

## Returns

`TransactionInstruction` — a transaction instruction ready to be added to a transaction.