# AggregatorV2V3Interface v0.2.1 API Reference
Source: https://docs.chain.link/chainlink-local/api-reference/v0.2.1/aggregator-v2-v3-interface

> For the complete documentation index, see [llms.txt](/llms.txt).

> **NOTE: Integrate Chainlink Local into your project**
>
> ### npm
>
> If you use [NPM](https://www.npmjs.com/), install the [@chainlink/local NPM
> package](https://www.npmjs.com/package/@chainlink/local):
>
> ```shell
> npm install @chainlink/local@0.2.1
> ```
>
> ### yarn
>
> If you use [Yarn](https://yarnpkg.com/), install the [@chainlink/local NPM
> package](https://www.npmjs.com/package/@chainlink/local):
>
> ```shell
> yarn add @chainlink/local@0.2.1
> ```
>
> ### foundry
>
> If you use [Foundry](https://book.getfoundry.sh/):
>
> ```shell
> forge install smartcontractkit/chainlink-local@ba1f4636e657f161df634379a5057a5a394e2fbb
> ```
>
> and then set remappings to: `@chainlink/local/=lib/chainlink-local/` in either `remappings.txt` or `foundry.toml` file
>
> ### RemixIDE
>
> Import the `CCIPLocalSimulator` contract from the `@chainlink/local` package:
>
> ```solidity
> import {CCIPLocalSimulator} from "@chainlink/local@0.2.1/src/ccip/CCIPLocalSimulator.sol";
> ```

## AggregatorV2V3Interface

[`AggregatorV2V3Interface`](https://github.com/smartcontractkit/chainlink-local/blob/ba1f4636e657f161df634379a5057a5a394e2fbb/src/data-feeds/interfaces/AggregatorV2V3Interface.sol) combines the functionality of both AggregatorInterface and AggregatorV3Interface, providing backward compatibility while supporting newer Data Feed features.

> **NOTE**
>
> This interface inherits from both:
>
> - AggregatorInterface: Basic price feed functionality
> - AggregatorV3Interface: Extended Data Feed capabilities

## Interface Inheritance

```solidity
interface AggregatorV2V3Interface is AggregatorInterface, AggregatorV3Interface {}
```

This interface provides access to all functions and events from both parent interfaces.