# Vault Operation Vault operations are a series of transaction sequences used by the guardian to rebalance the vault. These transaction sequences are specified in the relevant `submit` call and checked and executed by the vault. ### Constraints on vault operations Both the asset registry and the hooks contract are used to limit what operations can be accepted. In particular, the current iteration of the hooks contract: * Restricts any outgoing allowances for vault tokens to be created as a result of an operation * Restricts the vault value from decreasing beyond a pre-specified threshold * Restricts the types of operations and contracts that are called in those operations to a whitelist --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.aera.finance/v2-archive/concepts/vault-operation.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.