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Compound is an autonomous, algorithmic interest rate protocol enabling developers to build open financial applications for lending and borrowing crypto assets.
Compound is a decentralized finance (DeFi) protocol that provides an algorithmic, autonomous interest rate market for lending and borrowing crypto assets. It is designed primarily for developers who want to build open financial applications by integrating Compound’s smart contracts. The protocol allows users to supply assets as collateral to earn interest or borrow assets against their collateral. Compound III, the latest iteration, is deployed on Ethereum and initially supports USDC as the base asset. It uses an upgradeable proxy architecture to enable seamless upgrades and gas optimizations.
The protocol exposes a comprehensive set of smart contracts and developer resources, including a factory for deploying new markets, configurators for parameter management, and extension contracts for auxiliary features. Compound also provides a bulker contract that enables batching multiple operations into a single transaction, improving efficiency for complex workflows. Developers can interact with the protocol using the Comet Interface ABI and benefit from extensive documentation, community support via Discord and forums, and audited security practices.
What sets Compound apart is its focus on modularity, upgradeability, and gas efficiency, achieved through its proxy pattern and configurator design. This allows developers to deploy customized markets with optimized parameters while maintaining security and flexibility. Compound’s open governance and rewards system further incentivize participation and ecosystem growth. Teams can get started by reviewing the developer guides, compiling the Comet contracts, and joining the community channels for support and collaboration.
Developers building decentralized lending and borrowing applications face challenges in creating secure, upgradeable, and gas-efficient protocols that support flexible collateral and interest rate models. Managing complex contract interactions and ensuring protocol security while enabling extensibility is difficult.
Explore web3 competitors and apps like Compound DAO.

Free | |
|---|---|
| Price (Monthly) | Free |
| Price (Annual) | Free |
| Messaging | N/A |
| Support | Community support via Discord and forums |
| Analytics |
Reliable RPC, powerful APIs, and zero hassle.
Compound provides extensive developer documentation, community forums, and audited security reports to support building and integrating with its protocol.
Contracts that deploy and configure new market instances with customizable parameters.
Allows batching multiple protocol operations (e.g., supply, borrow, wrap tokens) into a single transaction.
Supports distribution and claiming of protocol rewards like COMP and WETH.
Developers can deploy tailored lending and borrowing markets with specific collateral and interest rate parameters using the Comet Factory and Configurator.
DeFi applications can integrate Compound’s protocol contracts to enable users to supply assets, borrow, and earn interest seamlessly.
User interfaces can leverage the Bulker contract to batch multiple actions into one transaction, reducing gas fees and improving UX.
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