The ixWrapperBuyPt method on the MarketThree class converts base assets into PT (Principal Tokens) by wrapping the base into SY and then swapping SY for PT in a single atomic operation.
Usage
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 { ixs, setupIxs } = await market.ixWrapperBuyPt({
owner: wallet.publicKey,
minPtOut: 1_000_000_000n,
baseIn: 1_100_000_000n,
});
const tx = new Transaction().add(...setupIxs, ...ixs);
const signature = await sendAndConfirmTransaction(connection, tx, [wallet]);
This is an async method because it needs to construct the SY minting accounts from the market’s flavor configuration.
Required Parameters
| Parameter | Type | Description |
|---|
owner | PublicKey | The owner’s wallet public key |
minPtOut | bigint | Minimum amount of PT tokens to receive |
baseIn | bigint | Amount of base asset to spend |
Optional Parameters
| Parameter | Type | Description |
|---|
tokenSyTrader | PublicKey | Intermediate SY token account. Defaults to owner’s ATA |
tokenPtTrader | PublicKey | Destination PT token account. Defaults to owner’s ATA |
tokenBaseTrader | PublicKey | Source base token account. Defaults to owner’s ATA |
lnImpliedApyLimit | number | Optional APY limit for the swap |
Returns
Returns a Promise<PreparedInstruction> with the following structure:
{
ixs: TransactionInstruction[], // Main instructions to execute
setupIxs: TransactionInstruction[] // Setup instructions for creating ATAs
}
setupIxs array contains instructions to create the necessary associated token accounts (ATAs) for SY, PT, and base tokens. The ixs array contains the flavor pre-instructions, the buy PT instruction, and the flavor post-instructions. 
