> For the complete documentation index, see [llms.txt](https://docs.aera.finance/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.aera.finance/v1-archive/concepts/vault-guardian.md).

# Vault Guardian

Vault Guardian is elected by the Vault Owner (treasury) to rebalance the underlying assets to optimize for the [Objective Function](/v1-archive/concepts/objective-function.md). The Guardian can control the following parameters for the underlying [Balancer Managed Pool](/v1-archive/concepts/aera-vault/balancer-managed-pool.md).

* Pool swap fees
* Pool weight update schedule
* Pool trading.

The Guardian cannot:

* Deposit or withdraw any funds/liquidity
* Add or remove asset types
* Execute instantaneous value-leaking operations (such as instantaneous weight changes)
* Delegate Guardian responsibilities.