> For the complete documentation index, see [llms.txt](https://docs.kpk.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.kpk.io/funds/infrastructure/onchain-accounting/price-feeds/ezeth-l2.md).

# ezETH (L2)

Custom price feed for **Renzo ezETH** on L2 chains. No direct ezETH/USD feed exists, so the price is composed from Renzo's bridged ezETH/ETH rate and the NAV's primary ETH/USD price.

**Source:** [`ezETH_L2_CustomPriceFeed.sol`](https://github.com/karpatkey/onchain-accounting/blob/main/src/prices/protocols/ezETH_L2_CustomPriceFeed.sol)

{% hint style="info" %}
**L2 feed.** For the Ethereum mainnet feed, see [ezETH](/funds/infrastructure/onchain-accounting/price-feeds/ezeth.md).
{% endhint %}

***

## Approach

`xRenzoDeposit.getRate()` × NAV primary ETH/USD

<figure><img src="/files/i0spwAA9NMFpAzyNOodL" alt="Left-to-right flowchart of the ezETH (L2) price feed: rate and Chainlink inputs combine into a USD price, with a staleness gate."><figcaption><p>ezETH (L2) price feed — how its oracle inputs compose into a USD price, with the staleness gate.</p></figcaption></figure>

{% hint style="info" %}
The ETH/USD term is sourced from the NAV's own selector — see [Base/USD from the NAV's own selector](/funds/infrastructure/onchain-accounting/price-feeds.md#base-usd-from-the-navs-own-selector).
{% endhint %}

***

## Price calculation

```
price = xRenzoDeposit.getRate() × (ETH/USD) / 1e18
```

| Input       | Source                                                  | Description                                         |
| ----------- | ------------------------------------------------------- | --------------------------------------------------- |
| `getRate()` | `IxRenzoDeposit.getRate()`                              | ezETH/ETH rate relayed from L1 by a keeper (18 dec) |
| `ETH/USD`   | **NAV base** — `getPriceDataNoDivergence(WETH)` (8 dec) | the NAV's primary WETH/USD price                    |

The ezETH/ETH rate is read from Renzo's `xRenzoDeposit` contract, which receives the value from Ethereum mainnet via a cross-chain keeper. The divisor is the fixed `1e18`. Output is **8 decimals** (inherited from the ETH/USD feed).

***

## Constructor

```solidity
constructor(
    address ezEth_,
    address xRenzoDeposit_,
    address nav_,
    address baseAsset_
)
```

| Parameter        | Description                                                                                |
| ---------------- | ------------------------------------------------------------------------------------------ |
| `ezEth_`         | ezETH token address (the supported underlying asset)                                       |
| `xRenzoDeposit_` | Renzo `xRenzoDeposit` contract exposing `getRate()`                                        |
| `nav_`           | NAVCalculator (proxy) — supplies the base asset's USD price via `getPriceDataNoDivergence` |
| `baseAsset_`     | the registered base asset whose USD price is read (WETH)                                   |

***

## Staleness

`getLatestPrice()` returns stale if `getRate()` returns `0`, or if the NAV reports the base asset (WETH) stale — all its feeds stale. The base leg's `updatedAt` comes from the NAV's selected WETH feed.

{% hint style="warning" %}
`getRate()` exposes no rate timestamp, so the ezETH/ETH rate has **no independent age check**. If Renzo's L1→L2 keeper lags (e.g. during sequencer downtime recovery) a stale rate may pass undetected. This is an architectural constraint of `xRenzoDeposit`.
{% endhint %}

***

## Chains

Deployed on **Arbitrum**. The Ethereum mainnet counterpart is [ezETH (Mainnet)](/funds/infrastructure/onchain-accounting/price-feeds/ezeth.md), which reads the Renzo reporter rate against ETH/USD.


---

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