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Overview Basic Request Model Decentralized Data Model Off-Chain Reporting Ethereum Proof-of-Stake Merge
DATA FEEDS Introduction to Data Feeds Data Feeds API Reference Historical Price Data Feed Registry API Reference Using ENS with Data Feeds Ethereum Data Feeds BNB Chain Data Feeds Polygon (Matic) Data Feeds Gnosis Chain (xDai) Data Feeds HECO Chain Data Feeds Avalanche Data Feeds Fantom Data Feeds Arbitrum Data Feeds Harmony Data Feeds Optimism Data Feeds Moonriver Data Feeds Moonbeam Data Feeds Metis Data Feeds Klaytn Data Feeds L2 Sequencer Uptime Feeds
USING RANDOMNESS Introduction to Chainlink VRF Get a Random Number Programmatic Subscription Subscription Manager UI Security Considerations Best Practices Supported Networks Migrating to VRF v2
Connect to any API Introduction to Using Any API Single Word Response Multi-Variable Responses Array Response Large Responses Existing Job Request Find Existing Jobs Testnet Oracles Data Provider Nodes API Reference
AUTOMATE CONTRACTS Introduction to Chainlink Keepers Time-based Automation Custom Logic Automation Create Keepers-compatible Contracts Manage your Upkeeps Creating Flexible Upkeeps EthBalanceMonitor Keepers Architecture Supported Networks Keepers Economics Keepers Release Notes FAQs
Resources Videos and Tutorials Acquire testnet LINK Fund Your Contracts Install Frameworks LINK Token Contracts Developer Communications Getting Help Selecting Data Feeds Hackathon Resources Contributing to Chainlink

Ethereum Data Feeds

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To learn how to implement these feeds, see the Ethereum Examples for Consuming Data Feeds.

For LINK token and Faucet details, see the LINK Token Contracts page.

Ethereum Proof-of-Stake Merge

The Ethereum Merge is coming soon. See the Ethereum Proof-of-Stake Merge page to learn how Chainlink is supporting the Ethereum Merge.

Ethereum developers and dApp teams should, at minimum, take the following actions to avoid unforeseen incidents and help protect end users:

  • Review all external dependencies that their contracts may rely upon
  • Test their smart contract deployments on Ethereum Proof-of-Stake testnets
  • Review the performance of their smart contracts under extreme market conditions and implement necessary safeguards to protect end-users

Chainlink Labs is not responsible for unforeseen incidents, including loss events, that may arise due to a failure to take the actions specified above.

Best practices for ETF and Forex feeds

  • Off-chain equity and ETF assets are traded only during standard market hours from 9:30AM to 4:00PM EDT Monday through Friday. Do not use these feeds outside of those windows.
  • Assets on the Forex (Foreign Exchange) markets are traded only from 5PM EDT on Sunday through 4PM EDT on Friday. Additionally, some currencies might trade only during local banking hours. Do not use Forex feeds outside of market hours for the specific currency.

Data feed categories

  • 🟢 Verified Feeds: Feeds that follow a standardized data feeds workflow
  • 🟡 Monitored Feeds: Feeds under review by the Chainlink Labs team to support the stability of the broader ecosystem
  • 🔵 Custom Feeds: Feeds built to serve a specific use case and might not be suitable for general use
  • âš« Specialized Feeds: Purpose-built feeds that might rely on contracts maintained by external entities and require in-depth understanding of composition methodology before use
  • â­• Deprecating: These feeds are scheduled for deprecation.

See the Selecting Quality Data Feeds page for complete details about each category.

Please review the risk mitigation documentation and chain.link/terms for more detail on the risks of using data feeds and your responsibilities for risk mitigation.

Track the status of this network at https://ethstats.net/.

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Please be careful with the feeds used by your smart contracts. The feeds listed in our official documentation have been reviewed; feeds built for custom deployments by other community members might have additional risks. Please do close diligence on your feeds before implementing them in your contracts. Learn more about making responsible data quality decisions.

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