Jupiter Developers

The Jupiter Lend API and SDK give you access to Earn (deposit-and-earn) and Borrow (collateralised borrowing) on Solana. Deposit into Earn vaults to earn yield, or use assets as collateral in Borrow markets to take out loans. The SDK and API provide deposits, withdrawals, borrows, and repayments as ready-made transactions or as raw instructions for CPI and custom flows.

Integrate Jupiter Earn / Borrow

TypeScript SDK

Compose on-chain flows for Jupiter Earn and Borrow. The SDK returns raw instructions so you can build transactions, sign, send, or use them in CPI and custom flows.

REST API

REST API for Earn (deposit, withdraw, mint, redeem) and Borrow (operate, operate-instructions) as unsigned base64 transactions or raw instructions, plus read endpoints for tokens, vaults, and user positions.

Jupiter Lend Products

Jupiter Earn vaults

Deposit assets into Jupiter Earn vaults and generate yield.

Borrow markets

Borrow assets against collateral in Jupiter markets.

Advanced Integration

Flashloans

Borrow and repay within a single transaction with zero fees and no collateral.

Advanced Recipes

Multiply, unwind, vault swap, and other composite flows using flashloans.

CPI Integration

Call Jupiter Lend directly from your on-chain Solana program.

Getting Started

Set up your development environment:

Install Dependencies

Add the Jupiter Lend TypeScript SDK and Solana web3.js to your dependencies.

npm i @jup-ag/lend @solana/web3.js

Jupiter Lend SDK is built on top of @solana/web3.js for RPC communication and transaction construction.

Setup the RPC

import { Connection } from "@solana/web3.js";

const connection = new Connection(
  "https://api.mainnet-beta.solana.com",
  {
    commitment: "confirmed",
  }
);

Public RPC endpoints are rate-limited and not recommended for production use.Use a dedicated RPC provider such as Helius, Triton, or Alchemy for improved reliability and performance.

Create or Import Wallet

Choose a method to create or import a wallet for signing transactions.

Alternatively, create a wallet using a browser wallet provider like Jupiter Wallet

Create Wallet with Solana CLI

Use the Solana CLI to generate a new keypair file.

solana-keygen new -o wallet.json

Generate Keypair Programmatically

Generate a new keypair programmatically using the Solana web3.js.

import { Keypair } from "@solana/web3.js";

const keypair = Keypair.generate();
console.log("Public Key:", keypair.publicKey.toBase58());

Load Wallet from Local Keypair File

Import a wallet from an existing keypair file.

import { Keypair } from "@solana/web3.js";
import fs from "fs";
import path from "path";

function loadKeypair(filePath: string): Keypair {
  const resolvedPath = path.resolve(filePath);
  const secret = JSON.parse(fs.readFileSync(resolvedPath, "utf8"));
  return Keypair.fromSecretKey(new Uint8Array(secret));
}

const userKeypair = loadKeypair("/path/to/wallet.json");
console.log("Public Key:", userKeypair.publicKey.toBase58());

Import Private Key

Import a private key exported from a browser wallet (base58-encoded string).

import { Keypair } from "@solana/web3.js";
import bs58 from "bs58";

const privateKey = "YOUR_BASE58_PRIVATE_KEY"; // exported from your browser wallet
const userKeypair = Keypair.fromSecretKey(bs58.decode(privateKey));
console.log("Public Key:", userKeypair.publicKey.toBase58());

Never expose or commit private keys to version control. Use secure key management in production environments.

Core Architecture

⌘I

Lend

Earn

Borrow

Flashloan

Liquidity

Advanced

Wallet Integrations

Resources

API Reference

Jupiter Lend Overview

Integrate Jupiter Earn / Borrow

TypeScript SDK

REST API

Jupiter Lend Products

Jupiter Earn vaults

Borrow markets

Advanced Integration

Flashloans

Advanced Recipes

CPI Integration

Getting Started

Install Dependencies

Setup the RPC

Create or Import Wallet

​Integrate Jupiter Earn / Borrow

TypeScript SDK

REST API

​Jupiter Lend Products

Jupiter Earn vaults

Borrow markets

​Advanced Integration

Flashloans

Advanced Recipes

CPI Integration

​Getting Started

Install Dependencies

Setup the RPC

Create or Import Wallet

Integrate Jupiter Earn / Borrow

Jupiter Lend Products

Advanced Integration

Getting Started