> For the complete documentation index, see [llms.txt](https://hyperdrive-2.gitbook.io/hyperdrive/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hyperdrive-2.gitbook.io/hyperdrive/borrowing/oracles.md).

# Oracles

## Oracles

Hyperdrive relies on USD price feeds from Oracles in order to determine an accounts borrowing limit. Hyperdrive uses a mix of different Oracle's depending on the market and the collateral.

Hyperdrive uses the industry standard decentralized oracles Chainlink as it's oracle for the Primary markets.

### Market Definitions

#### Primary USDT Market

| Collateral | Oracle    | Comments                                                          |
| ---------- | --------- | ----------------------------------------------------------------- |
| HYPE       | Chainlink |                                                                   |
| UBTC       | Chainlink |                                                                   |
| UETH       | Chainlink |                                                                   |
| USOL       | Chainlink |                                                                   |
| kHYPE      | Chainlink | Utilizes the redemption rate combined with the HYPE market price. |

#### Primary USDC Market

| Collateral | Oracle    | Comments |
| ---------- | --------- | -------- |
| HYPE       | Chainlink |          |
| UBTC       | Chainlink |          |
| UETH       | Chainlink |          |
| USOL       | Chainlink |          |

#### Primary USDe Market

| Collateral | Oracle    | Comments |
| ---------- | --------- | -------- |
| HYPE       | Chainlink |          |
| UBTC       | Chainlink |          |
| UETH       | Chainlink |          |

#### Primary USDH Market

| Collateral | Oracle | Comments |
| ---------- | ------ | -------- |
| HYPE       | Pyth   |          |
| UBTC       | Pyth   |          |
| UETH       | Pyth   |          |
| USOL       | Pyth   |          |

#### Pioneer  USDT Market

| Collateral | Oracle | Comments |
| ---------- | ------ | -------- |
| hbUSDT     | Pyth   |          |
| hwHLP      | Pyth   |          |
| wHLP       | Pyth   |          |

#### Treasury USDT Market

| Collateral | Oracle | Comments |
| ---------- | ------ | -------- |
| thBILL     | Pyth   |          |

#### Culture USDC Market

| Collateral | Oracle | Comments |
| ---------- | ------ | -------- |
| APE        | Pyth   |          |

#### LST Market

| Collateral | Oracle          | Comments                        |
| ---------- | --------------- | ------------------------------- |
| HYPED      | Redemption Rate |                                 |
| stHYPE     | Redemption Rate |                                 |
| kHYPE      | Redemption Rate |                                 |
| ptKHYPE    | Custom          | Linear discount on the PT Price |