Connect your smart contract to the outside world

Chainlink's decentralized oracle network provides reliable, tamper-proof inputs and outputs for complex smart contracts on any blockchain.


AAVE logo
Synthetix logo
Celsius logo
Ampleforth logo
Nexus Mutual logo
ENS logo

Start building your universally
connected smart contract

Highly secure and flexible infrastructure

Reliable, tamper-proof network

Use decentralization, trusted nodes, premium data, and cryptographic proofs to connect highly accurate and available data/APIs to any smart contract.

Seamless connection to any API

Build on a flexible framework that can retrieve data from any API, connect with your existing systems, and integrate with any blockchain, now and in the future.

Proven, time-tested solutions

Integrate battle-hardened and time-tested oracle solutions that secure billions of dollars in value for market-leading blockchain projects.

Transparent oracle computation

Independently monitor and verify Chainlink’s open-source code, the performance of its oracle networks, and the quality of individual node operators.

What is Chainlink?

Powering the future of smart contracts

Start building with Chainlink

Join Chainlink’s global open-source community

Chainlink is open-source technology that is collectively developed by a large community of developers, researchers, and users who share the goal of building Chainlink into a public good for the benefit of the entire blockchain ecosystem.

Get involved through our grant programs

Chainlink news

Stay updated on the latest Chainlink news