0x89f29910…e8dbsent to0x309a862b…c8c0·#24,378,013·view on Etherscan
# Update price feeds in cUSDEv3 on Mantle with CAPO and SVR implementation.
## Proposal summary
This proposal updates existing price feed for USDe, mETH, WETH, and FBTC on the USDe market on Mantle.
### CAPO summary
CAPO is a price oracle adapter designed to support assets that grow gradually relative to a base asset - such as liquid staking tokens that accumulate yield over time. It provides a mechanism to track this expected growth while protecting downstream protocol from sudden or manipulated price spikes. mETH price feed is updated to its CAPO implementation.
Further detailed information can be found on the corresponding [proposal pull request](https://github.com/compound-finance/comet/pull/1072) and [forum discussion for CAPO](https://www.comp.xyz/t/woof-correlated-assets-price-oracle-capo/6245).
### CAPO audit
CAPO has been audited by [OpenZeppelin](https://www.comp.xyz/t/capo-price-feed-audit/6631, as well as the LST / LRT implementation [here](https://www.comp.xyz/t/capo-lst-lrt-audit/7118).
### SVR summary
[RFP process](https://www.comp.xyz/t/oev-rfp-process-update-july-2025/6945) and community [vote](https://snapshot.box/#/s:comp-vote.eth/proposal/0x9502fab4d5768e30326948b26780664b6a3e1da00c3c65d32095b5897a35e21d) passed and decided to implement API3 SVR solution for Mantle USDe market, this proposal updates USDe, WETH, mETH and FBTC price feeds to support SVR implementations.
## Proposal actions
The first action updates USDe, mETH, WETH and FBTC price feeds to the CAPO and SVR implementation. This sends the encoded 'setBaseTokenPriceFeed', 'updateAssetPriceFeed' and 'deployAndUpgradeTo' calls across the bridge to the governance receiver on Mantle.