# Oracles

In decentralized lending protocols like ZeroLend, an oracle is essential for fetching accurate and reliable price data of digital assets and other financial instruments. 

By providing this external information to the blockchain, oracles enable smart contracts to make informed decisions based on real-time market conditions. Oracles help determine collateral values, interest rates, and liquidation events. 

ZeroLend uses four Oracle providers to determine price feeds for various assets on different chains:

* [Pyth Network](https://docs.zerolend.xyz/security/oracles/pyth-oracles)
* [Redstone](https://docs.zerolend.xyz/security/oracles/redstone)
* [Chainlink](https://docs.zerolend.xyz/security/oracles/chainlink)
* [API3](https://docs.zerolend.xyz/security/oracles/api3-oracles)
* [eOracle](https://docs.zerolend.xyz/security/oracles/eoracle)