> For the complete documentation index, see [llms.txt](https://docs.fira.money/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fira.money/developers/utility-contracts/oracles/solvency-oracle.md).

# Solvency Oracle

{% hint style="info" %}
**Source:** `src/fira_bonding/oracles/FiraSolvencyOracle.sol`
{% endhint %}

## Overview

The FiraSolvencyOracle provides collateral-to-loan-token pricing for fixed-rate lending markets. It sits at the top of a 3-layer oracle pipeline:

```
AaveToChainlinkAdapter → ChainlinkOracleV2 → FiraSolvencyOracle → FiraLendingMarket
```

## Oracle pipeline

| Layer                      | Purpose                                                            |
| -------------------------- | ------------------------------------------------------------------ |
| **AaveToChainlinkAdapter** | Adapts Aave/Pendle price feeds to a Chainlink-compatible interface |
| **ChainlinkOracleV2**      | Combines two Chainlink feeds to produce a collateral/USDC price    |
| **FiraSolvencyOracle**     | Adjusts the price for BT solvency and provides to lending market   |

## Deployed instances

| Market      | FiraSolvencyOracle                                                                         |
| ----------- | ------------------------------------------------------------------------------------------ |
| PT-USDe/BT  | [`0xeB30b33A...`](https://etherscan.io/address/0xeB30b33A1aC175e0305853636D0eF3898eb530f3) |
| PT-sUSDe/BT | [`0xB9bAA3D5...`](https://etherscan.io/address/0xB9bAA3D58E1431776218F39919fd21AeD3e69aBb) |
| PT-USDG/BT  | [`0x90d0d6fd...`](https://etherscan.io/address/0x90d0d6fdf9fe93777085e8b4baf3aab4285bac6b) |

## Related pages

* [Contract Deployments](/developers/deployment.md) — Full oracle pipeline addresses


---

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