Additional Rewards management

Some DeFi protocols deploy incentives programs (like governance tokens distributions, airdrops etc.) for users depositing into their pools.

In the case of Kiln DeFi, user positions are aggregated on a Vault contract and then deposited to the underlying protocol, which makes the Vault be seen as one user by the underlying protocols.

Kiln DeFi is offering multiple additional rewards distribution models:

1. Claim; Allowing Kiln partners to claim all additional rewards received by their vaults, allowing partners to keep it from them or to redistribute it to users via protocols like Merkl.

2. Reinvest; Allowing Kiln partners to trigger a swap from the reward asset eg. COMP to the vault asset eg. USDC, it will boost the APY of the users you can do this a the frequency you prefer.

3. Direct user claim; Only available with Morpho, where are have a custom partnership so that users can directly claim morpho tokens.

Note that integrator is not obliged to process these additional-rewards, they can let them accrue on the vault which won't impact its normal behavior.

Here is a list of the protocol distributing additional rewards on top of the base rewards of lending assets.

Protocol	Additional rewards	Kiln DeFi distribution	Estimated Additional Rewards
AAVE v3	AAVE	Claim Reinvest	Currently paused - 0%
Compound v3	COMP	Claim Reinvest	Between 0.5% and 10% depending on the chain, see all here.
Morpho	MORPHO + more tokens depending on the strategy	Direct user claiming	Between 5% and 10% depending on the selected strategy, see all here.
Venus	XVS	Not possible as require staking XVS.	Between 10% and 15% depending on the chain, see all here.

Detailed flow for each additional rewards distribution models

Claim and Reinvest (or none) must be specified in the Vault at its initialization in the deployment parameters. Note that you can delete the Vault Strategy, but you cannot change it to another one for security reasons.

1. Claim: integrator can trigger the claim of the extra-rewards which will make an ERC-20 transfer from the vault to the address specified in the claim transaction. This is useful if you want to redistribute this revenue to the users yourself or with a solution like Merkl. Please contact Kiln team if you are interested in this option.

Hypothetical scenario where vault receives AAVE extra-rewards and integrator applies the CLAIM strategy.

1. Reinvest: you can emit an instruction to the vault to swap the ERC-20 additional-rewards to the Vault asset (ex: USDC for a USDC AAVE v3 vault) which will create a rewards bump for all users. This is very useful to not expose users to other tokens than the one they deposited, creating a simple and aggregated experience. You can perform this operation every end of month for example that can create an incentive for the user to wait for the "additional rewards boost" before withdrawing and make this product more sticky.

Hypothetical scenario where vault receives AAVE extra-rewards and integrator applies the REINVEST strategy.

1. Direct user Claim: Direct user claim is only available with Morpho, and is not managed by the vault itself but by the morpho team. No action will be required on your end, Kiln is providing APIs to display theses rewards and know how much can be claimed by your users.

   1. Note that with morpho, rewards can be distirbuted in MORPHO token but also with other type of assets, and each asset type will need to be claimed individually by the user, you need to plan to add this in your UI if you are not using Kiln Widget.

How to perform these transactions?

Using the CLAIM_MANAGER_ROLE wallet, you can call the following function on the vault claimAdditionalRewards(address rewardsAsset, bytes calldata payload)where rewardsAsset is the address of the ERC20 token additional-rewards to process and payload is the calldata the vault should execute depending on the claim or reinvest strategy.

This function will execute the configured vault strategy when you call it. You can either call it one-time (ex: to process an airdrop) or regularly (ex: every month to claim a governance token boost).