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.
Note, off-chain equity and ETF assets are only traded during standard market hours (9:30 am - 4 pm ET M-F). Using these feeds outside of those windows is not recommended.
Optimism uses an optimistic rollup protocol, but there is no L2 Sequencer Health Flag available at this time.
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.