> 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/deployment.md).

# Contract Deployments

**Network:** Ethereum Mainnet\
**Initial Deployment:** March 13–15, 2026\
**Bond Token Expiries:** May 7, 2026 · May 27, 2026

***

## External tokens

| Token                    | Symbol    | Decimals | Address                                                                                                                 |
| ------------------------ | --------- | -------- | ----------------------------------------------------------------------------------------------------------------------- |
| USDC                     | USDC      | 6        | [`0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48`](https://etherscan.io/address/0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48) |
| Wrapped stETH            | wstETH    | 18       | [`0x7f39C581F595B53c5cb19bD0b3f8dA6c935E2Ca0`](https://etherscan.io/address/0x7f39C581F595B53c5cb19bD0b3f8dA6c935E2Ca0) |
| Coinbase Wrapped BTC     | cbBTC     | 8        | [`0xcbB7C0000aB88B473b1f5aFd9ef808440eed33Bf`](https://etherscan.io/address/0xcbB7C0000aB88B473b1f5aFd9ef808440eed33Bf) |
| PT Ethena USDe 7MAY2026  | PT-USDe   | 18       | [`0xAeBf0Bb9f57E89260d57f31AF34eB58657d96Ce0`](https://etherscan.io/address/0xAeBf0Bb9f57E89260d57f31AF34eB58657d96Ce0) |
| PT Ethena sUSDe 7MAY2026 | PT-sUSDe  | 18       | [`0x3de0ff76E8b528C092d47b9DaC775931cef80F49`](https://etherscan.io/address/0x3de0ff76E8b528C092d47b9DaC775931cef80F49) |
| PT Paxos USDG 27MAY2026  | PT-USDG   | 18       | [`0x9db38D74a0D29380899aD354121DfB521aDb0548`](https://etherscan.io/address/0x9db38D74a0D29380899aD354121DfB521aDb0548) |
| PT Apyx apxUSD 18JUN2026 | PT-apxUSD | 18       | [`0x92a6a01b07984de46c24e8eba248449beb8b1dcb`](https://etherscan.io/address/0x92a6a01b07984de46c24e8eba248449beb8b1dcb) |

## Fira tokens

| Token                         | Symbol  | Decimals | Address                                                                                                                 |
| ----------------------------- | ------- | -------- | ----------------------------------------------------------------------------------------------------------------------- |
| Fira Wrapped USDC             | FW-USDC | 18       | [`0x62F5366C9E21A95326C461a098a408e034e017b3`](https://etherscan.io/address/0x62F5366C9E21A95326C461a098a408e034e017b3) |
| Bond Token                    | BT      | 6        | [`0x57FFbb88f0c69283531a751BE6FF0741348371bA`](https://etherscan.io/address/0x57FFbb88f0c69283531a751BE6FF0741348371bA) |
| Coupon Token                  | CT      | 6        | [`0x93635d34fAd5A9fA7065a645691100b2E23C93cd`](https://etherscan.io/address/0x93635d34fAd5A9fA7065a645691100b2E23C93cd) |
| Markov USDC Prime (SisuVault) | mkUSDC  | 18       | [`0x50791a5cA041b9D6Dd03e64E3Fa0e34a376759AC`](https://etherscan.io/address/0x50791a5cA041b9D6Dd03e64E3Fa0e34a376759AC) |

### May 27, 2026 Expiry

| Token                | Symbol | Decimals | Address                                                                                                                 |
| -------------------- | ------ | -------- | ----------------------------------------------------------------------------------------------------------------------- |
| Bond Token (27MAY)   | BT     | 6        | [`0x88dd7069cb9d8b7cc6eebd23b82ed1e9a75d9734`](https://etherscan.io/address/0x88dd7069cb9d8b7cc6eebd23b82ed1e9a75d9734) |
| Coupon Token (27MAY) | CT     | 6        | [`0x17eA07Eb87bf7B091070999a0D313556D4ac580B`](https://etherscan.io/address/0x17eA07Eb87bf7B091070999a0D313556D4ac580B) |

### June 18, 2026 Expiry

| Token                | Symbol | Decimals | Address                                                                                                                 |
| -------------------- | ------ | -------- | ----------------------------------------------------------------------------------------------------------------------- |
| Bond Token (18JUN)   | BT     | 6        | [`0x33fd40eD7744c961b61a086A87F83787bd9606eE`](https://etherscan.io/address/0x33fd40eD7744c961b61a086A87F83787bd9606eE) |
| Coupon Token (18JUN) | CT     | 6        | [`0x33b6bf0390A84fe0f27979f9B52d78bfE1c6156F`](https://etherscan.io/address/0x33b6bf0390A84fe0f27979f9B52d78bfE1c6156F) |

BT and CT are minted/burned in pairs via the YieldContractFactory. Multiple expiry series can coexist.

## Core protocol contracts

| Contract              | Address                                                                                                                 | Description                                     |
| --------------------- | ----------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------- |
| FiraRouterV4          | [`0xFF615E63aAF2d1B1EE4AdFD34a5840747185d8A0`](https://etherscan.io/address/0xFF615E63aAF2d1B1EE4AdFD34a5840747185d8A0) | Main entry point for all user operations        |
| USDCFW (FW)           | [`0x62F5366C9E21A95326C461a098a408e034e017b3`](https://etherscan.io/address/0x62F5366C9E21A95326C461a098a408e034e017b3) | Wrapped Standardized Yield token for USDC       |
| SisuVault             | [`0x50791a5cA041b9D6Dd03e64E3Fa0e34a376759AC`](https://etherscan.io/address/0x50791a5cA041b9D6Dd03e64E3Fa0e34a376759AC) | ERC-4626 vault aggregating yield across markets |
| LiquidityInjector     | [`0x2104f638a839Ca7260180d9Ee7f4865C92Df4cE5`](https://etherscan.io/address/0x2104f638a839Ca7260180d9Ee7f4865C92Df4cE5) | Sole BT supplier to fixed-rate markets          |
| RehypothecationModule | [`0xad332515d9c82438BBa0e9FAA9486B52A33a7Ac8`](https://etherscan.io/address/0xad332515d9c82438BBa0e9FAA9486B52A33a7Ac8) | Controls phi ratios for rebalancing             |
| YieldContractFactory  | [`0xcdB83Abb9121c04589567A4106C3cFaf65DB68Be`](https://etherscan.io/address/0xcdB83Abb9121c04589567A4106C3cFaf65DB68Be) | Deploys BT/CT pairs                             |
| FiraMarketFactory     | [`0xBF1EfC2199ae9EE1B6f5060a45D4440157E49744`](https://etherscan.io/address/0xBF1EfC2199ae9EE1B6f5060a45D4440157E49744) | Deploys AMM markets                             |
| BCLpOracle            | [`0xfEAAEC9124FB007d7c44Ed704A08d24b264de921`](https://etherscan.io/address/0xfEAAEC9124FB007d7c44Ed704A08d24b264de921) | Oracle for BC/LP pricing                        |
| AdaptiveCurveIrm      | [`0x73C288826347af3718e6F09c2A24AaFDA77684cD`](https://etherscan.io/address/0x73C288826347af3718e6F09c2A24AaFDA77684cD) | Interest rate model for variable-rate markets   |
| FIRA Yield Treasury   | [`0x97fD565B913b439Ff16774Da152B1f71F05A82F1`](https://etherscan.io/address/0x97fD565B913b439Ff16774Da152B1f71F05A82F1) | Fee recipient                                   |

## Lending markets

| Contract              | Address                                                                                                                 | Description                                       |
| --------------------- | ----------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------- |
| VariableLendingMarket | [`0xc8Db629192a96D6840e88a8451F17655880A2e4D`](https://etherscan.io/address/0xc8Db629192a96D6840e88a8451F17655880A2e4D) | Variable-rate lending (wstETH, cbBTC collateral)  |
| FiraLendingMarket     | [`0x280ddD897F39C33fEf1CbF863B386Cb9a8e53a0e`](https://etherscan.io/address/0x280ddD897F39C33fEf1CbF863B386Cb9a8e53a0e) | Fixed-rate lending (PT collateral, BT loan token) |

## AMM markets

### FiraMarket — May 7, 2026

| Field         | Value                                                                                                                   |
| ------------- | ----------------------------------------------------------------------------------------------------------------------- |
| FiraMarket    | [`0xde00b5edb255078dd42ee94fd97f473d1c9c055d`](https://etherscan.io/address/0xde00b5edb255078dd42ee94fd97f473d1c9c055d) |
| BT            | [`0x57FFbb88f0c69283531a751BE6FF0741348371bA`](https://etherscan.io/address/0x57FFbb88f0c69283531a751BE6FF0741348371bA) |
| FW            | [`0x62F5366C9E21A95326C461a098a408e034e017b3`](https://etherscan.io/address/0x62F5366C9E21A95326C461a098a408e034e017b3) |
| Expiry        | May 7, 2026 (`1778112000`)                                                                                              |
| scalarRoot    | `102406700000000000000`                                                                                                 |
| initialAnchor | `1008276800000000000`                                                                                                   |
| lnFeeRateRoot | `2996000000000000`                                                                                                      |

### FiraMarket — May 27, 2026

| Field      | Value                                                                                                                   |
| ---------- | ----------------------------------------------------------------------------------------------------------------------- |
| FiraMarket | [`0x7083cfc87e7f6ebb858cc39b72d9c7605d368729`](https://etherscan.io/address/0x7083cfc87e7f6ebb858cc39b72d9c7605d368729) |
| BT         | [`0x88dd7069cb9d8b7cc6eebd23b82ed1e9a75d9734`](https://etherscan.io/address/0x88dd7069cb9d8b7cc6eebd23b82ed1e9a75d9734) |
| FW         | [`0x62F5366C9E21A95326C461a098a408e034e017b3`](https://etherscan.io/address/0x62F5366C9E21A95326C461a098a408e034e017b3) |
| Expiry     | May 27, 2026                                                                                                            |

### FiraMarket — June 18, 2026

| Field      | Value                                                                                                                   |
| ---------- | ----------------------------------------------------------------------------------------------------------------------- |
| FiraMarket | [`0x400922e37d608620672dc1f1b7a25ecbaabb57f8`](https://etherscan.io/address/0x400922e37d608620672dc1f1b7a25ecbaabb57f8) |
| BT         | [`0x33fd40eD7744c961b61a086A87F83787bd9606eE`](https://etherscan.io/address/0x33fd40eD7744c961b61a086A87F83787bd9606eE) |
| FW         | [`0x62F5366C9E21A95326C461a098a408e034e017b3`](https://etherscan.io/address/0x62F5366C9E21A95326C461a098a408e034e017b3) |
| Expiry     | June 18, 2026                                                                                                           |

## Variable-rate markets

### wstETH / USDC

| Field            | Value                                                                                                                                        |
| ---------------- | -------------------------------------------------------------------------------------------------------------------------------------------- |
| Lending Market   | [`0xc8Db629192a96D6840e88a8451F17655880A2e4D`](https://etherscan.io/address/0xc8Db629192a96D6840e88a8451F17655880A2e4D)                      |
| Market ID        | `0xB3152AC00687CC9502B78AB452956F85CC89AC210DEEFDA5DBFF09F7F167B544`                                                                         |
| Loan Token       | USDC ([`0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48`](https://etherscan.io/address/0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48))               |
| Collateral Token | wstETH ([`0x7f39C581F595B53c5cb19bD0b3f8dA6c935E2Ca0`](https://etherscan.io/address/0x7f39C581F595B53c5cb19bD0b3f8dA6c935E2Ca0))             |
| Oracle           | [`0x48F7E36EB6B826B2dF4B2E630B62Cd25e89E40e2`](https://etherscan.io/address/0x48F7E36EB6B826B2dF4B2E630B62Cd25e89E40e2) (Morpho wstETH/USDC) |
| IRM              | [`0x73C288826347af3718e6F09c2A24AaFDA77684cD`](https://etherscan.io/address/0x73C288826347af3718e6F09c2A24AaFDA77684cD) (AdaptiveCurveIrm)   |
| LTV              | 87%                                                                                                                                          |
| LLTV             | 89%                                                                                                                                          |
| Whitelist        | None (permissionless)                                                                                                                        |

### cbBTC / USDC

| Field            | Value                                                                                                                                                  |
| ---------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Lending Market   | [`0xc8Db629192a96D6840e88a8451F17655880A2e4D`](https://etherscan.io/address/0xc8Db629192a96D6840e88a8451F17655880A2e4D)                                |
| Market ID        | `0x39D3BDD30BF4BCF4A4D3547F2484ABE1E30A2DCD41ED83788B40E2720357AB76`                                                                                   |
| Loan Token       | USDC ([`0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48`](https://etherscan.io/address/0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48))                         |
| Collateral Token | cbBTC ([`0xcbB7C0000aB88B473b1f5aFd9ef808440eed33Bf`](https://etherscan.io/address/0xcbB7C0000aB88B473b1f5aFd9ef808440eed33Bf))                        |
| Oracle           | [`0x698253A24CC4926090f841B38D31d6342A00a82C`](https://etherscan.io/address/0x698253A24CC4926090f841B38D31d6342A00a82C) (ChainlinkOracleV2 cbBTC/USDC) |
| IRM              | [`0x73C288826347af3718e6F09c2A24AaFDA77684cD`](https://etherscan.io/address/0x73C288826347af3718e6F09c2A24AaFDA77684cD) (AdaptiveCurveIrm)             |
| LTV              | 88%                                                                                                                                                    |
| LLTV             | 90%                                                                                                                                                    |
| Whitelist        | None (permissionless)                                                                                                                                  |

## Fixed-rate markets

All fixed-rate markets use the FiraLendingMarket at [`0x280ddD897F39C33fEf1CbF863B386Cb9a8e53a0e`](https://etherscan.io/address/0x280ddD897F39C33fEf1CbF863B386Cb9a8e53a0e). BT is the loan token. Only the LiquidityInjector can supply BT (whitelist-gated).

### PT-USDG / BT (May 27 Expiry)

| Field                 | Value                                                                                                                                        |
| --------------------- | -------------------------------------------------------------------------------------------------------------------------------------------- |
| Loan Token            | BT 27MAY ([`0x88dd7069cb9d8b7cc6eebd23b82ed1e9a75d9734`](https://etherscan.io/address/0x88dd7069cb9d8b7cc6eebd23b82ed1e9a75d9734))           |
| Collateral Token      | PT-USDG ([`0x9db38D74a0D29380899aD354121DfB521aDb0548`](https://etherscan.io/address/0x9db38D74a0D29380899aD354121DfB521aDb0548))            |
| Oracle                | [`0x90d0d6fdf9fe93777085e8b4baf3aab4285bac6b`](https://etherscan.io/address/0x90d0d6fdf9fe93777085e8b4baf3aab4285bac6b) (FiraSolvencyOracle) |
| IRM                   | `0x0000000000000000000000000000000000000000` (none — fixed rate)                                                                             |
| LTV                   | 94%                                                                                                                                          |
| LLTV                  | 94.75%                                                                                                                                       |
| Whitelist             | [`0x2104f638a839Ca7260180d9Ee7f4865C92Df4cE5`](https://etherscan.io/address/0x2104f638a839Ca7260180d9Ee7f4865C92Df4cE5) (LiquidityInjector)  |
| Maturity Grace Period | 86400 (24h)                                                                                                                                  |
| Liquidation Incentive | 1%                                                                                                                                           |

### PT-USDe / BT

| Field                 | Value                                                                                                                                        |
| --------------------- | -------------------------------------------------------------------------------------------------------------------------------------------- |
| Loan Token            | BT ([`0x57FFbb88f0c69283531a751BE6FF0741348371bA`](https://etherscan.io/address/0x57FFbb88f0c69283531a751BE6FF0741348371bA))                 |
| Collateral Token      | PT-USDe ([`0xAeBf0Bb9f57E89260d57f31AF34eB58657d96Ce0`](https://etherscan.io/address/0xAeBf0Bb9f57E89260d57f31AF34eB58657d96Ce0))            |
| Oracle                | [`0xeB30b33A1aC175e0305853636D0eF3898eb530f3`](https://etherscan.io/address/0xeB30b33A1aC175e0305853636D0eF3898eb530f3) (FiraSolvencyOracle) |
| IRM                   | `0x0000000000000000000000000000000000000000` (none — fixed rate)                                                                             |
| LTV                   | 89%                                                                                                                                          |
| LLTV                  | 90%                                                                                                                                          |
| Whitelist             | [`0x2104f638a839Ca7260180d9Ee7f4865C92Df4cE5`](https://etherscan.io/address/0x2104f638a839Ca7260180d9Ee7f4865C92Df4cE5) (LiquidityInjector)  |
| Maturity Grace Period | 86400 (24h)                                                                                                                                  |
| Liquidation Incentive | 3.1%                                                                                                                                         |
| BT Liquidity          | 350 BT supplied by LI                                                                                                                        |

### PT-sUSDe / BT

| Field                 | Value                                                                                                                                        |
| --------------------- | -------------------------------------------------------------------------------------------------------------------------------------------- |
| Loan Token            | BT ([`0x57FFbb88f0c69283531a751BE6FF0741348371bA`](https://etherscan.io/address/0x57FFbb88f0c69283531a751BE6FF0741348371bA))                 |
| Collateral Token      | PT-sUSDe ([`0x3de0ff76E8b528C092d47b9DaC775931cef80F49`](https://etherscan.io/address/0x3de0ff76E8b528C092d47b9DaC775931cef80F49))           |
| Oracle                | [`0xB9bAA3D58E1431776218F39919fd21AeD3e69aBb`](https://etherscan.io/address/0xB9bAA3D58E1431776218F39919fd21AeD3e69aBb) (FiraSolvencyOracle) |
| IRM                   | `0x0000000000000000000000000000000000000000` (none — fixed rate)                                                                             |
| LTV                   | 89%                                                                                                                                          |
| LLTV                  | 90%                                                                                                                                          |
| Whitelist             | [`0x2104f638a839Ca7260180d9Ee7f4865C92Df4cE5`](https://etherscan.io/address/0x2104f638a839Ca7260180d9Ee7f4865C92Df4cE5) (LiquidityInjector)  |
| Maturity Grace Period | 86400 (24h)                                                                                                                                  |
| Liquidation Incentive | 3.1%                                                                                                                                         |
| BT Liquidity          | 350 BT supplied by LI                                                                                                                        |

### PT-apxUSD / BT (June 18 Expiry)

**Market ID**

```
0xfe8dbea27393d8703f2835c536630828d3742d4434fcb0a295d6a4cb0685d0ac
```

| Field                 | Value                                                                                                                                        |
| --------------------- | -------------------------------------------------------------------------------------------------------------------------------------------- |
| Loan Token            | BT 18JUN ([`0x33fd40eD7744c961b61a086A87F83787bd9606eE`](https://etherscan.io/address/0x33fd40eD7744c961b61a086A87F83787bd9606eE))           |
| Collateral Token      | PT-apxUSD ([`0x92a6a01b07984de46c24e8eba248449beb8b1dcb`](https://etherscan.io/address/0x92a6a01b07984de46c24e8eba248449beb8b1dcb))          |
| Oracle                | [`0x5ccdbef28bc15d306ddb949f6b43bb0e3002cea6`](https://etherscan.io/address/0x5ccdbef28bc15d306ddb949f6b43bb0e3002cea6) (FiraSolvencyOracle) |
| IRM                   | `0x0000000000000000000000000000000000000000` (none — fixed rate)                                                                             |
| LTV                   | 88% (sentinel `0`: maxLTV == LLTV)                                                                                                           |
| LLTV                  | 88%                                                                                                                                          |
| Whitelist             | [`0x2104f638a839Ca7260180d9Ee7f4865C92Df4cE5`](https://etherscan.io/address/0x2104f638a839Ca7260180d9Ee7f4865C92Df4cE5) (LiquidityInjector)  |
| Maturity Grace Period | 86400 (24h)                                                                                                                                  |
| Liquidation Incentive | 3.73%                                                                                                                                        |

## Oracle pipeline

### Variable-rate oracles

| Market      | Oracle                                                                                                                  | Type                                         |
| ----------- | ----------------------------------------------------------------------------------------------------------------------- | -------------------------------------------- |
| wstETH/USDC | [`0x48F7E36EB6B826B2dF4B2E630B62Cd25e89E40e2`](https://etherscan.io/address/0x48F7E36EB6B826B2dF4B2E630B62Cd25e89E40e2) | Morpho v1 oracle (pre-deployed, reused)      |
| cbBTC/USDC  | [`0x698253A24CC4926090f841B38D31d6342A00a82C`](https://etherscan.io/address/0x698253A24CC4926090f841B38D31d6342A00a82C) | ChainlinkOracleV2 (BTC/USD + USDC/USD feeds) |

### Fixed-rate oracle pipeline (May 7 Expiry)

PT-USDe and PT-sUSDe markets use a 3-layer oracle stack:

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

| Layer                  | PT-USDe                                                                                                                 | PT-sUSDe                                                                                                                |
| ---------------------- | ----------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------- |
| AaveToChainlinkAdapter | [`0xc42F003F9eCD3DdDF704556E82Cdd9271818171F`](https://etherscan.io/address/0xc42F003F9eCD3DdDF704556E82Cdd9271818171F) | [`0x3d7346578be9B82E0227D027bd86F6De59BA3C91`](https://etherscan.io/address/0x3d7346578be9B82E0227D027bd86F6De59BA3C91) |
| ChainlinkOracleV2      | [`0x2ED527087B740530562754EFCd608290eCCdBe2e`](https://etherscan.io/address/0x2ED527087B740530562754EFCd608290eCCdBe2e) | [`0xD6f5D9102007A737D9EDE6543262516d5c2fc8f8`](https://etherscan.io/address/0xD6f5D9102007A737D9EDE6543262516d5c2fc8f8) |
| FiraSolvencyOracle     | [`0xeB30b33A1aC175e0305853636D0eF3898eb530f3`](https://etherscan.io/address/0xeB30b33A1aC175e0305853636D0eF3898eb530f3) | [`0xB9bAA3D58E1431776218F39919fd21AeD3e69aBb`](https://etherscan.io/address/0xB9bAA3D58E1431776218F39919fd21AeD3e69aBb) |

### Fixed-rate oracle pipeline (May 27 Expiry — PT-USDG)

The PT-USDG market uses a MetaOracleDeviationTimelock with primary/backup oracle redundancy:

```
MetaOracleDeviationTimelock → FiraSolvencyOracle → FiraLendingMarket
```

| Layer                       | Address                                                                                                                 | Description                      |
| --------------------------- | ----------------------------------------------------------------------------------------------------------------------- | -------------------------------- |
| MetaOracleDeviationTimelock | [`0xEA268c588072e2639448E3a9433AB92E871335E2`](https://etherscan.io/address/0xEA268c588072e2639448E3a9433AB92E871335E2) | Deviation threshold: 0.5%        |
| Primary Oracle              | [`0x8ec85C167a43EBe4EB183e8d9B876D1cdad9A9fB`](https://etherscan.io/address/0x8ec85C167a43EBe4EB183e8d9B876D1cdad9A9fB) | 1:1 USDG peg + Pendle TWAP       |
| Backup Oracle               | [`0x8A01940D89CF95D9F6e92a90B17C0Ca5C953fE73`](https://etherscan.io/address/0x8A01940D89CF95D9F6e92a90B17C0Ca5C953fE73) | Chainlink USDG/USD + Pendle TWAP |
| FiraSolvencyOracle          | [`0x90d0d6fdf9fe93777085e8b4baf3aab4285bac6b`](https://etherscan.io/address/0x90d0d6fdf9fe93777085e8b4baf3aab4285bac6b) | Final solvency check             |

### Fixed-rate oracle pipeline (June 18 Expiry — PT-apxUSD)

The PT-apxUSD market reuses the Morpho-listed `MorphoChainlinkOracleV2` directly. Two BASE feeds (Pendle PT-apxUSD TWAP × Apyx Capped CR) are combined and divided by the USDC/USD QUOTE feed:

```
MorphoChainlinkOracleV2 → FiraSolvencyOracle → FiraLendingMarket
```

| Layer                          | Address                                                                                                                 | Description                |
| ------------------------------ | ----------------------------------------------------------------------------------------------------------------------- | -------------------------- |
| MorphoChainlinkOracleV2        | [`0x4DFceF82eaEE9eA817bEb1279336F7D0Ebf2b685`](https://etherscan.io/address/0x4DFceF82eaEE9eA817bEb1279336F7D0Ebf2b685) | Reused from Morpho listing |
| BASE\_FEED\_1 (Pendle PT TWAP) | [`0xEfDB275FC9C7946f36E632bEF61379c5f5Ab4C86`](https://etherscan.io/address/0xEfDB275FC9C7946f36E632bEF61379c5f5Ab4C86) | PT-apxUSD TWAP feed        |
| BASE\_FEED\_2 (Apyx CR)        | [`0x2037a5Eb67aa9B2FBF50042B724D8c4dB80F23b4`](https://etherscan.io/address/0x2037a5Eb67aa9B2FBF50042B724D8c4dB80F23b4) | Apyx Capped CR feed        |
| QUOTE\_FEED\_1 (Chainlink)     | [`0x8fFfFfd4AfB6115b954Bd326cbe7B4BA576818f6`](https://etherscan.io/address/0x8fFfFfd4AfB6115b954Bd326cbe7B4BA576818f6) | USDC/USD                   |
| FiraSolvencyOracle             | [`0x5ccdbef28bc15d306ddb949f6b43bb0e3002cea6`](https://etherscan.io/address/0x5ccdbef28bc15d306ddb949f6b43bb0e3002cea6) | Final solvency check       |

### Chainlink feeds

| Feed     | Address                                                                                                                 |
| -------- | ----------------------------------------------------------------------------------------------------------------------- |
| BTC/USD  | [`0xF4030086522a5bEEa4988F8cA5B36dbC97BeE88c`](https://etherscan.io/address/0xF4030086522a5bEEa4988F8cA5B36dbC97BeE88c) |
| USDC/USD | [`0x8fFfFfd4AfB6115b954Bd326cbe7B4BA576818f6`](https://etherscan.io/address/0x8fFfFfd4AfB6115b954Bd326cbe7B4BA576818f6) |

## Router facets

The FiraRouterV4 uses a facet-based (diamond-like) architecture. All user-facing calls go through the Router, which delegates to the appropriate facet.

| Facet                | Address                                                                                                                 | Functions               |
| -------------------- | ----------------------------------------------------------------------------------------------------------------------- | ----------------------- |
| ActionSwapBTV3       | [`0xab2383692ed8e0836e25b71988c925dfd94ed2fe`](https://etherscan.io/address/0xab2383692ed8e0836e25b71988c925dfd94ed2fe) | BT swaps                |
| ActionSwapCTV3       | [`0xdb7a722ae7baf83d3d8b9e812952916326d6656b`](https://etherscan.io/address/0xdb7a722ae7baf83d3d8b9e812952916326d6656b) | CT swaps                |
| ActionAddRemoveLiqV3 | [`0x286bbc5519cd421011e7e1c092e1d6a72edb4d30`](https://etherscan.io/address/0x286bbc5519cd421011e7e1c092e1d6a72edb4d30) | Liquidity add/remove    |
| ActionCallbackV3     | [`0x2dead5b19935d7299d7077c52f2e2860370278a5`](https://etherscan.io/address/0x2dead5b19935d7299d7077c52f2e2860370278a5) | Internal swap callbacks |
| ActionSimple         | [`0x4474886d003abcb53c307324894c074ce5176f75`](https://etherscan.io/address/0x4474886d003abcb53c307324894c074ce5176f75) | Simple token transfers  |
| ActionMiscV3         | [`0x967234d7a4416380107da653e5d3afc9c7bf8874`](https://etherscan.io/address/0x967234d7a4416380107da653e5d3afc9c7bf8874) | FW/BC minting, simulate |
| ActionBorrow         | [`0x66f5853cf6c36b97e754f074397d00b78253ef03`](https://etherscan.io/address/0x66f5853cf6c36b97e754f074397d00b78253ef03) | Borrow/repay            |
| ActionStorageV4      | [`0x0386685eA7d37c61dDb8F2e2E8c45f6a81d4A3C8`](https://etherscan.io/address/0x0386685eA7d37c61dDb8F2e2E8c45f6a81d4A3C8) | Router admin            |

## Factory contracts

| Contract                 | Address                                                                                                                 |
| ------------------------ | ----------------------------------------------------------------------------------------------------------------------- |
| ChainlinkOracleV2Factory | [`0x7783fF7bE856C7A82bC5497Fb3CC8F7E8802D8dC`](https://etherscan.io/address/0x7783fF7bE856C7A82bC5497Fb3CC8F7E8802D8dC) |
| SisuVaultFactory         | [`0xe77E0f97A864558e5513209323e4169FcEAC6981`](https://etherscan.io/address/0xe77E0f97A864558e5513209323e4169FcEAC6981) |
| YieldContractFactory     | [`0xcdB83Abb9121c04589567A4106C3cFaf65DB68Be`](https://etherscan.io/address/0xcdB83Abb9121c04589567A4106C3cFaf65DB68Be) |
| FiraMarketFactory        | [`0xBF1EfC2199ae9EE1B6f5060a45D4440157E49744`](https://etherscan.io/address/0xBF1EfC2199ae9EE1B6f5060a45D4440157E49744) |

## Key roles

| Role                | Address                                                                                                                               |
| ------------------- | ------------------------------------------------------------------------------------------------------------------------------------- |
| SisuVault Curator   | [`0xc02B0D1ca7B986E63cf1599F9c32e8A96c2D4Cff`](https://etherscan.io/address/0xc02B0D1ca7B986E63cf1599F9c32e8A96c2D4Cff) (Markov Labs) |
| SisuVault Allocator | [`0x4E700A14868620a9Bba0669721F1945c410c7571`](https://etherscan.io/address/0x4E700A14868620a9Bba0669721F1945c410c7571) (Markov Labs) |
| FIRA Yield Treasury | [`0x97fD565B913b439Ff16774Da152B1f71F05A82F1`](https://etherscan.io/address/0x97fD565B913b439Ff16774Da152B1f71F05A82F1)               |
| Deployer EOA        | [`0x7Da82CBD315923d75dbb2C62F099392705FF97f9`](https://etherscan.io/address/0x7Da82CBD315923d75dbb2C62F099392705FF97f9)               |


---

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