Querying and filtering Claimed events by username or token address will be difficult and in some cases impossible.
The Claimed event doesn't have indexed fields (Distributor.sol#L111):
event Claimed(address user, address token, uint256 amount);Manual review
Consider adding indexed fields to the Claimed event. For example, indexing the user field will make it possible to find all tokens claimed by an address.
In some distant future, answeredInRound may start returning a stub value (e.g. 0), which will break the check for all cases.
As per the Chainlink documentation, the answeredInRound variable has been deprecated:
answeredInRound: Deprecated - Previously used when answers could take multiple rounds to be computed
Thus, it's no longer necessary to check that roundId > answeredInRound. In some distant future, answeredInRound may start returning a stub value (e.g. 0), which will break the check for all cases.
Manual review
Consider removing the roundId > answeredInRound check from the LibOracle.readChainlinkFeed function.
https://github.com/AngleProtocol/angle-transmuter/blob/9707ee4ed3d221e02dcfcd2ebaa4b4d38d280936/contracts/transmuter/facets/SettersGuardian.sol#L16-L18 https://github.com/AngleProtocol/angle-transmuter/blob/9707ee4ed3d221e02dcfcd2ebaa4b4d38d280936/contracts/savings/Savings.sol#L220-L224
The governor and the guardian may fail to pause the Transmuter or the Savings contract when pausing is needed.
SettersGuardian.togglePause and Savings.togglePause are functions used to pause the contracts, they can only be called by the governor or the guardian. These functions are error-prone since they depend on the current state of the blockchain. If the governor and the guardian independently trigger either of the functions at around the same time (e.g. an incident may force them to pause the contract ASAP), the contract won't actually be paused since the second call will unpause it.
Manual review
For the two functions, consider replacing them with functions that explicitly set the paused state to either 0 or 1.