Chainlink

Decentralized oracle network

oracledatacross-chain

chain.linkUpdated 2026-11-02

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About

Chainlink is the largest decentralized oracle network, feeding prices, randomness and cross-chain messaging to DeFi — the top lending and derivatives protocols rely on its data feeds.

Price feeds are the de facto DeFi standard with clear integration docs. Feeds update on a cadence — beware staleness in extreme markets before relying on them.

Main uses

Price feeds
Verifiable randomness
CCIP cross-chain

Site info

CategoryDevelopers

TypeOracle network

LanguagesEnglish / Multi-language

AccessWeb / docs

FeesProtocol fees

FAQ

What does Chainlink do?

A decentralized oracle network feeding prices, randomness and external data to smart contracts — core DeFi infrastructure.

Does using Chainlink data cost money?

Fees depend on the network and data stream; the developer docs detail the billing models.

How do I reach the official Chainlink site safely?

The “Visit official site” button on this page points to Chainlink’s official address: chain.link. Fake clones are common in crypto — verify the domain and bookmark this page or the official URL.

Does Chainlink cost money?

Protocol fees

Visit official site ↗