Strip - Exponent Docs

The ixStripFromBase method on the Vault class creates a transaction instruction that wraps a base asset into SY, strips it into PT and YT, and deposits the YT into the user’s yield position — all in a single atomic operation.

A YieldTokenPosition must be initialized via ixInitializeYieldPosition before calling this method. The instruction auto-deposits YT into the yield position, so the account must already exist onchain.

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 = await vault.ixStripFromBase({
  owner: wallet.publicKey,
  amountBase: 1_000_000_000n,
});

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

This is an async method because it needs to construct the SY minting accounts from the vault’s flavor configuration.

Required Parameters

Parameter	Type	Description
`owner`	`PublicKey`	The owner’s wallet public key
`amountBase`	`bigint`	Amount of base asset to strip

Optional Parameters

Parameter	Type	Description
`baseSrc`	`PublicKey`	Source base token account. Defaults to owner’s PT mint ATA
`sySrc`	`PublicKey`	Intermediate SY token account. Defaults to owner’s ATA
`ptDst`	`PublicKey`	Destination PT token account. Defaults to owner’s ATA
`ytDst`	`PublicKey`	Destination YT token account. Defaults to owner’s ATA

Returns

Returns a Promise<TransactionInstruction> that wraps the base asset into SY, strips it into PT and YT, and deposits the YT into the user’s yield position.