Merge (to SY) - Exponent Docs

The ixMerge method on the Vault class creates a transaction instruction that merges PT and YT back into SY tokens.

This method returns SY tokens. If you want to receive the base asset directly (e.g., USDC), use ixMergeToBase instead.

Usage

import { Vault, 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 vault = await Vault.load(LOCAL_ENV, connection, vaultAddress);

const ix = vault.ixMerge({
  pyIn: 1_000_000n,
  depositor: wallet.publicKey,
});

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

Required Parameters

Parameter	Type	Description
`pyIn`	`bigint`	Amount of PT and YT to merge
`depositor`	`PublicKey`	The depositor’s wallet public key

Optional Parameters

Parameter	Type	Description
`ptSrc`	`PublicKey`	Source PT token account. Defaults to depositor’s ATA
`ytSrc`	`PublicKey`	Source YT token account. Defaults to depositor’s ATA
`syDst`	`PublicKey`	Destination SY token account. Defaults to depositor’s ATA

Returns

Returns a TransactionInstruction that merges equal amounts of PT and YT back into SY.