> ## Documentation Index
> Fetch the complete documentation index at: https://docs.gauntlet.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# Aera V3

> How Gauntlet integrates Aera V3 and what partners need to know

## What It Does

[Aera V3](https://www.aera.finance/) is a noncustodial, trustless smart contract protocol for on-chain treasury and yield management. It provides the vault contracts, permission model, and extensibility framework that powers the majority of Gauntlet's vault infrastructure across Ethereum, Arbitrum, Base, Optimism, Polygon, and Avalanche. Aera V3 handles asset custody, operation validation, and hook-based extensibility while Gauntlet handles curation, strategy, and risk management.

## How Gauntlet Uses It

Gauntlet deploys Aera V3 vaults in two configurations:

* **Single-depositor vaults** serve dedicated treasuries where one entity deposits capital and Gauntlet manages strategy execution. These use `SingleDepositorVault` contracts with time-delayed fee calculation.
* **Multi-depositor vaults** accept deposits from multiple participants through a `Provisioner` contract that handles minting, redeeming, and async order fulfillment. These use `MultiDepositorVault` contracts with unit-based fee calculation.

Both configurations support a hook system for custom behavior at lifecycle points and a constrained guardian model where all operations are validated against on-chain Merkle trees. For architectural deep-dives on guardians, hooks, and cross-chain mechanics, see the [Aera V3 Architecture](/guides/concepts/supported-protocols/aera-v3/guardian-model) section in the Contracts tab.

## What Integrators Touch

Aera V3 vaults expose the standard **ERC-4626 tokenized vault** interface. Integrators use the same `deposit`/`redeem` patterns described in the [Deposits and Withdrawals](/guides/developer/earn/deposits-and-withdrawals) guide.

Key integration considerations:

* **Vault type matters:** Single-depositor vaults have direct deposit/withdraw on the vault contract. Multi-depositor vaults route through a Provisioner with async fulfillment. See [Vault Types](/guides/concepts/vault-types).
* **Fees:** Aera V3 includes a `FeeVault` contract for on-chain fee accrual and claiming. Partners can configure fee recipients. See [Fees](/integrate/fees).
* **Wrapper vaults:** Partners needing bespoke allocations or custom fee configurations can use wrapper vaults that deposit into underlying Gauntlet vaults. See [Wrapper Vaults](/integrate/wrapper-vaults).
* **Data:** Vault metrics are available through the Gauntlet API and on-chain. See [Displaying Data](/guides/developer/earn/displaying-data).

## Related Pages

* [Deposits and Withdrawals](/guides/developer/earn/deposits-and-withdrawals) -- ERC-4626 deposit and withdrawal flows
* [Vault Types](/guides/concepts/vault-types) -- Single-depositor and multi-depositor architectures
* [Fees](/integrate/fees) -- Fee types, FeeVault integration, and fee recipient setup
* [Deployed Vaults](/contract-reference/deployed-vaults) -- Aera V3 vault addresses by chain
* [Contract Reference](/contract-reference/overview) -- Full contract documentation