1inch has officially launched Aqua, a self-custodial shared-liquidity layer that lets users deploy a single wallet balance across multiple DeFi liquidity strategies simultaneously.

The product, first introduced to developers in November, is now available to all users across 13 EVM chains, including Ethereum, Arbitrum, Base, Robinhood Chain and BNB Chain.

According to 1inch, Aqua is designed to improve capital utilization, reduce liquidity fragmentation and preserve self-custody by keeping assets in users’ wallets until they are transferred as part of an atomic swap.

The protocol lets a single wallet balance back multiple liquidity positions instead of requiring users to split assets across different pools or protocols. Users approve token balances through Aqua’s registry, with tokens moving only when a qualifying swap is executed in a single atomic transaction. Liquidity providers can open and close positions without lock-ups, while their exposure remains limited to the assets held in their wallets.

1inch said Aqua combines self-custody with risk-controlled liquidity by limiting swaps to verified counterparties and protecting providers from just-in-time fee-sniping attacks common in traditional AMMs.

The protocol has been audited by eight independent firms, including Hexens, OpenZeppelin, Bailsec and Nethermind, as the company seeks to make DeFi liquidity more efficient, secure and capital-effective.