> For the complete documentation index, see [llms.txt](https://yield-enhancement-labs.gitbook.io/yield-enhancement-labs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://yield-enhancement-labs.gitbook.io/yield-enhancement-labs/about-yel/oracles.md).

# Oracles

Yel Finance uses the [industry standard decentralized oracles Chainlink](https://docs.chain.link/data-feeds) as its primary oracle which provides highly secure and reliable, tamper-resistant data feeds. 

Chainlink oracles are used across our Sonic and Base instances:

<table><thead><tr><th align="center">Asset</th><th data-hidden></th><th data-hidden></th></tr></thead><tbody><tr><td align="center">S / USD (Sonic)</td><td></td><td></td></tr><tr><td align="center">ETH / USD (Base)</td><td></td><td></td></tr></tbody></table>

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