Developers

Learn how to use a Chainlink External Adapter to fetch IPFS data and reduce Ethereum gas fees for large token distributions and airdrops on Audius and other platforms.

Learn how to use Chainlink’s External Adapters to enable off-chain computation of statistical weather analysis.

Announcing the Starter Kit Showcase, a month-long initiative that encourages developers to use our Starter Kits to create smart contracts that make use of Chainlink tools.

Chainlink hackathon winner Digital Bridge walks through how they built a two-factor authentication service to trigger on-chain events using Chainlink oracles.

In this tutorial, learn how to use Chainlink VRF in Hardhat’s popular development environment to build a next-generation NFT that changes every time it’s transferred.

Learn how Chainlink bounty winners implemented a Chainlink Price Feed to provide whiskey buyers and sellers accurate and tamper-proof on-chain prices of craft whiskey bottles.

See how these winning projects at the forefront of DeFi, NFTs, and GovTech are using Chainlink oracles to power innovative smart contract applications.

Learn how to use Chainlink’s pre-aggregated Price Feeds to retrieve broad market price data on indices such as FTSE 100.

6 pro tips to help you build and submit a hackathon project that stands out from the competition and captures the judges’ attention.

Learn how Chainlink Price Feeds give developers access to secure and high-quality price data when building scalable and economically stable dApps on xDai Chain.

Learn how to use Chainlink VRF to request a provably random number on Polygon’s highly scalable Proof of Stake chain.

Read how the winning projects from the 2021 ETHDenver Hackathon used Chainlink oracles to build innovative dApps around NFTs, identity verification, bounty-based engineering, and more.

Read how the winning Chainlink bounty projects from the 2021 ETH Global MarketMake Hackathon used Chainlink’s secure oracle infrastructure to build novel DeFi applications ranging from automated insurance protocols to quadratic funding models.

In this technical tutorial, learn how to use Chainlink Price Feeds to obtain secure and up-to-date commodity price data in your smart contract.

Learn how to use Chainlink’s Proof of Reserve feeds to check off-chain reserves against on-chain supply and verify the collateralization of stablecoins like TUSD.

In this technical tutorial, learn how to use Chainlink Price Feeds to obtain real-time Foreign Exchange (FX) price data in your smart contract.

This developer tutorial from Chainlink Virtual Hackathon winner Ted Nivan explains how to use Chainlink to convert a vending machine to accept payments in ETH.

Hardhat offers a feature-rich development environment for Ethereum developers. In this tutorial, we walk through how to get started with Chainlink using Hardhat for fetching external data in your smart contracts and more.

In this technical tutorial from Chainlink Virtual Hackathon winners, learn how to call marine water level data to a parametric insurance smart contract using a Chainlink External Adapter.

Learn how to build a scalable DeFi dApp with secure price feeds by using Chainlink’s decentralized oracles on the Matic Network.

In this technical tutorial, learn how to use Chainlink nodes and Price Feeds to build a Solidity smart contract for a parametric crop insurance product.

This developer tutorial explains how to connect to the Twitter API via Chainlink so you can trigger tweets directly from a smart contract.