> For the complete documentation index, see [llms.txt](https://docs.mellow.finance/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mellow.finance/core-vaults/architecture/hooks/redirectingdeposithook.md).

# RedirectingDepositHook

### Overview

`RedirectingDepositHook` is a deposit-time liquidity allocation hook implementing the `IHook` interface. It is designed to **redirect newly deposited assets** from a vault into its underlying **subvaults**, based on per-subvault risk and capacity constraints defined by a `RiskManager`.

This hook helps distribute liquidity optimally during deposit flows.

### Purpose

* Automatically **forwards newly deposited assets** from the main vault into eligible subvaults.
* Delegates decision-making to the vault’s configured `RiskManager`, which determines per-subvault deposit limits.
* Ensures that **subvaults do not exceed their capacity constraints**.

### Key Function

### `callHook(address asset, uint256 assets)`

Distributes a given amount of `asset` across available subvaults based on their individual deposit capacity.

**Execution Logic:**

1. Retrieves:
   * Active `vault` context via `IVaultModule(address(this))`
   * Configured `RiskManager` via `vault.riskManager()`
   * Number of subvaults via `vault.subvaults()`
2. Iterates over each subvault:
   * Fetches max allowed deposit via `riskManager.maxDeposit(subvault, asset)`
   * If allowed amount is zero → skip
   * Otherwise:
     * Pushes `min(assets, allowed)` via `vault.hookPushAssets()`
     * Decrements `assets` accordingly
     * Stops early if full amount has been distributed

### Components and Assumptions

* **Vault:** Must implement `IVaultModule`:
  * `subvaults()` → number of subvaults
  * `subvaultAt(index)` → returns subvault address
  * `hookPushAssets(subvault, asset, amount)` → transfers tokens to subvault
  * `riskManager()` → returns associated `IRiskManager`
* **Risk Manager:** Must implement:
  * `maxDeposit(subvault, asset)` → returns max allowed deposit into that subvault


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