Leverage lending (“looping”) lets you boost yield by borrowing against your deposit, swapping the loan, and re-depositing — all to multiply exposure. With Compass API TypeScript SDK, you can loop in one atomic call, no Solidity, no manual steps, minimal gas.

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Example

Aave Looping Diagram In this example, you’re depositing USDC, borrowing ETH, swapping it back into USDC, and re-supplying — on repeat — to achieve a target leverage (e.g. 2.19x). Compass bundles all of this into one atomic transaction. This illustration demonstrates AAVE looping strategy with the following parameters, assuming that the price of ETH is 2333 USDC:
  • Collateral Asset: USDC
  • Loan Asset: ETH
  • Initial Collateral Amount: 1000 USDC
  • Loan to Value Ratio: 70%
  • Leverage: 2.19x
The API will figure out the optimal values for each loop and automate all actions.

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Prerequisites

1

Install Dependencies

Install the required packages:
npm install @compass-labs/api-sdk viem dotenv
2

Set Environment Variables

Create a .env file in your project root:
# .env
PRIVATE_KEY="your_wallet_private_key"
RPC_URL="your_ethereum_rpc_url"
COMPASS_API_KEY="your_compass_api_key"

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Implementation Guide

1

Import dependencies and load environment

First, import the necessary dependencies and load your environment variables.
2

Initialize SDK, Wallet, and Account

Set up the Compass API SDK, create your wallet client, and initialize your account.
3

Get and sign authorization for transaction batching

Before you can execute Aave looping, you need to get an authorization from the Compass API and sign it with your private key. This ensures only you can execute the batch.
4

Configure the Aave looping transaction

Configure the Aave looping strategy and prepare the transaction using the Compass API SDK.
5

Sign and broadcast the transaction

Sign the returned transaction with your private key and broadcast it to the network. This is the final step to actually send your Aave looping transaction to Ethereum.

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Full Code

Here is the full script from the tutorial. Copy and paste in your code editor and play around!

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Understanding the Parameters

Let’s break down the key parameters for the AAVE looping strategy:

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AAVE Loop Parameters

  • collateral_token: The token you want to supply as collateral (e.g., “USDC”, “WETH”, “WBTC”)
  • borrow_token: The token you want to borrow (e.g., “WETH”, “USDC”)
  • initial_collateral_amount: The amount of collateral token to supply initially
  • multiplier: The leverage multiplier (e.g., 2.0 means double exposure)
  • max_slippage_percent: Maximum allowed slippage for token swaps (1-100)
  • loan_to_value: The loan-to-value ratio in percentage (0-100)
The loan-to-value (LTV) ratio determines how much you can borrow against your collateral. For example, if LTV is 80%, you can borrow up to 80% of your collateral’s value. Be cautious with high LTV ratios as they increase liquidation risk.The maximum possible multiplier is determined by the formula: 1 / (1 - loan_to_value/100). For example, with an LTV of 80%, the maximum multiplier would be 1 / (1 - 80/100) = 1 / 0.2 = 5. This represents the theoretical maximum leverage possible at that LTV ratio.

Compass API Docs

Access detailed API documentation and references

AAVE Documentation

Learn more about AAVE’s lending protocol

GitHub Examples

View more code examples and implementations