Chainlink

Introduction​

Chainlink data feeds are the quickest way to connect your smart contracts to oracle data, such as asset prices.

Chainlink is implemented as a smart contract on Neon EVM, making Chainlink data feeds from the Solana network available for smart contracts to consume.

Each Chainlink feed is available via its own contract. To use a feed, you create a "hybrid" smart contract, i.e. you build the integration with the feed contract into your own smart contract and deploy that. Learn more from Chainlink's documentation.

Deployed feeds​

The Chainlink controller contract is deployed on Devnet. This contract implements the AggregatorV3Interface to support the following feeds:

Mainnet

Currency pair	Chainlink contract feed address
BTC/USD	0xxxxxxx
BNB/USD	0xxxxxxx
ETH/USD	0xxxxxxx
OP/USD	0xxxxxxx
SOL/USD	0xxxxxxx
USDC/USD	0xxxxxxx
USDT/USD	0xxxxxxx

Boilerplate contract

SPDX-License-Identifier: MIT
pragma solidity 0.8.21;

import "@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol";


contract TestChainlink {
    /**
     * Returns the latest price for specific price feed
     */
    function getLatestPrice(address _priceFeed) external view returns (int) {
        (
            /* uint80 roundID */,
            int price,
            /*uint startedAt*/,
            /*uint timeStamp*/,
            /*uint80 answeredInRound*/
        ) = AggregatorV3Interface(_priceFeed).latestRoundData();
        return price;
    }

    /**
     * Returns the decimals for specific price feed
     */
    function getDecimals(address _priceFeed) external view returns (uint8) {
        return AggregatorV3Interface(_priceFeed).decimals();
    }
}