Chainlink Developers

Welcome to the Chainlink documentation site. You'll find comprehensive guides and documentation to help you start working with Chainlink as quickly as possible, as well as support if you get stuck. Click here for an introductory walkthrough on how to create a Chainlink request on the Ropsten test network!

Building on Chainlink? Click here to get started!

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Architecture Overview

Basic Request Model

Chainlink connects smart contracts with external data using its decentralized oracle network. Chainlink API requests are handled 1:1 by an oracle.

The Basic Request Model describes the on-chain architecture of requesting data from a single oracle source.

To learn how to make a GET request using a single oracle, see Make a GET Request.

Decentralized Data Model

For a more robust and trustworthy answer, you can aggregate data from many oracles. With on-chain aggregation, data is aggregated from a decentralized network of independent oracle nodes. This architecture is applied to Chainlink Price Feeds, which aggregate asset price data.

The Decentralized Data Model describes how data is aggregated, and how consumer contracts can retrieve this data.

To learn how to consume the price of ETH in your smart contract, see Get the Latest Price.

Updated 7 days ago

Architecture Overview

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