> For the complete documentation index, see [llms.txt](https://docs.hyperlend.finance/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hyperlend.finance/developer-documentation/core-pools.md).

# Core Pools

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**HyperLend Core Pools are based on Aave V3 contracts.**
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The source code of the HyperLend Core contracts is available on [GitHub](https://github.com/hyperlendx/hyperlend-core).

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**Pool**

The `Pool` contract is the main entry point into the Hyperlend Core Pools. Most user interactions with the protocol occur through this contract. 

**PoolConfigurator**

The `PoolConfigurator` provides configuration methods for the `Pool` contract. The write methods in this contract can only be called by addresses with the appropriate permissioned system roles managed by the `ACLManager`.

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**PoolAddressesProvider**

The `PoolAddressesProvider` acts as a registry for various protocol components, including the  `Pool`contract. It also can modify the implementation of proxy contracts.

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**Oracle**

The `Oracle` is the registry of oracles used to fetch asset prices and manage price sources.

**ProtocolDataProvider**

The `ProtocolDataProvider`collects and preprocesses information from the `Pool`contract, making it easier to use.

**InterestRateStrategy**

The `InterestRateStrategy` contract calculates the interest rates based on the state of the reserve.

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**hToken**

`hTokens` are yield-generating tokens minted and burned upon the supply and withdrawal of assets to and from the Hyperlend Pool.

**VariableDebtToken**

`VariableDebtTokens` are non-transferable tokens that accrue interest, representing borrow positions with variable borrow rates.

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