> For the complete documentation index, see [llms.txt](https://docs.solera.market/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.solera.market/overview/editor/oracles.md).

# Oracles

How different price feeds are provided for use within Solera

Liquidations rely on price feed information provided by Oracles. To ensure proper liquidations and avoid any bad debt, Solera relies on three major oracle sources:

Currently the following oracles are being used: 

1. [Stork](https://www.stork.network/)
2. [eOracle](https://eo.app/)
3. [Chronicle](https://chroniclelabs.org/)

Oracle providers for each asset and vault are listed within the application. Solera plans to onboard more providers and custom feeds as needed. 

Certain markets are configured with **custom oracles feeds** depending on the underlying asset and anticipated leverage in borrowing strategies. Oracle configuration is determined by the market/vault curator. A few common oracle configurations are listed below:

<table><thead><tr><th width="258.8125">Feed Type</th><th>Description</th></tr></thead><tbody><tr><td>Hardcoded</td><td>Value of collateral asset is set to a fixed price</td></tr><tr><td>Market Price</td><td>Value of collateral asset is calculated using an average of available trading venues on DEX and CEXs,</td></tr><tr><td>Redemption Rate / NAV</td><td>Value of collateral asset is determined by the underling Net Asset Value (NAV) of it's redeemable value, not market price</td></tr><tr><td>Time Weighted Average Price (TWAP)</td><td>Value of collateral asset is calculated using its average value over a specific period (eg. trailing 7-day average)</td></tr></tbody></table>