Decentralized exchange aggregator 1inch opened Aqua, its shared liquidity layer, to all users on Tuesday across 13 Ethereum Virtual Machine-compatible chains, eight months after a developer-only release, according to the company’s launch announcement. The design breaks with how nearly every decentralized exchange has worked since 2018: liquidity providers never deposit tokens into a smart contract. They approve a wallet balance instead, and the protocol pulls funds only at the moment a matching swap executes. 1inch is backing the launch with roughly $1.37 million in provider rewards over three months, a bid to pull capital away from the pool model that currently leaves most DeFi liquidity idle.
A liquidity pool is a smart contract holding two or more tokens that traders swap against, with depositors earning a share of trading fees in return for locking up their capital.
Key takeaways
- Aqua went live publicly on July 28, 2026 across 13 EVM chains, including Ethereum, Arbitrum, Base, BNB Chain and Robinhood Chain.
- Tokens stay in the provider’s wallet. One $100,000 balance can back three positions quoting a combined $300,000, though a swap fails if the wallet cannot cover it.
- The 1inch Foundation committed 10 million 1INCH and the 1inch DAO added $500,000 USDC, distributed through Merkl over three months, worth about $1.37 million at current prices.
- Aqua passed eight independent audits, including reviews by OpenZeppelin, Nethermind, Hexens and Bailsec.
Published: July 28, 2026, 16:00 UTC
Why 1inch built a registry instead of a pool
Aqua functions as a registry of approved balances rather than a vault of deposited ones. A provider approves a token amount per chain, then creates full-range, concentrated or pegged positions that all draw on that same approval. When a swap matches a position’s terms, the protocol pulls the tokens and returns proceeds and fees in a single atomic transaction. Approvals can be revoked at any time.
The pitch rests on a capital efficiency problem 1inch has been documenting publicly. Research commissioned by the company and published on July 18 found that 85% of $1.84 billion tracked across major concentrated-liquidity exchanges went underutilized during the first half of 2026. Roughly $542 million sat entirely outside active trading ranges in an average week, forgoing an estimated $150 million in annual fees.
“Tokens stay in your wallet, under your control, while one balance backs multiple positions across different strategies rather than being split between smart contract deposits,” 1inch co-founder Sergej Kunz told CoinDesk.
The $300,000 figure is quoted liquidity, not leverage. Nothing is borrowed, and exposure stays capped by what the wallet actually holds.
The verified counterparty question
Every swap on Aqua must be executed by what 1inch calls a verified counterparty, defined as a market maker or arbitrage bot that has passed a check enforced on-chain at swap time. That is a departure from the November developer release, when the company said anyone could interact with a position to execute a swap, as Decrypt reported.
1inch describes the change as part of a move toward “risk-controlled and regulated DeFi,” and calls Aqua the first risk-controlled liquidity venue. The gating buys a specific defense. Because each position has a single owner, 1inch argues just-in-time fee skimming becomes impossible, an attack the company puts at a cost of up to 44% of provider fee income on conventional venues.
It also narrows who can trade against the liquidity, which is a meaningful trade-off for a category built on permissionless access. Whether providers accept a whitelisted counterparty set in exchange for self-custody is the open question the incentive program is designed to answer.
What providers are actually taking on
Self-custody removes one risk and leaves several intact. 1inch states plainly that fees are not guaranteed, prices can move against a position, and providers carry both market and smart contract risk. The company labels Aqua a product for experienced users.
Impermanent loss is the gap between holding two tokens outright and supplying them to a trading position, which appears when their relative price moves after the position opens. That risk does not disappear because the tokens sit in a wallet rather than a contract. Approval-based designs also concentrate a different exposure: an approved balance remains callable by the protocol until revoked.
The audit record is unusually deep for a launch of this size. Eight independent reviews is well above the norm, and the firms involved are among the more established in the space. That matters in a month when Summer.fi halted vaults after a $6 million flash loan exploit and crypto bridges lost $35 million across six hours of attacks.
What happens next
The three-month reward schedule sets the first real deadline. Merkl distributions of 10 million 1INCH and $500,000 USDC will run through late October, and the question after that is whether quoted depth holds once subsidies stop. 1INCH traded at $0.0839 on July 28, down 1.45% on the day, which values the token portion of the program near $870,000.
The chain list is its own signal. Alongside Ethereum, Arbitrum, Base and BNB Chain, Aqua launched on Robinhood Chain, the Arbitrum-based network that cleared $568 million in volume in its first week. Aggregating liquidity across venues that route retail order flow is where a shared layer would show its value first.
The broader test is whether the registry model gets copied. If capital efficiency claims hold up under real volume, pool-based exchanges face pressure to answer. If quoted liquidity turns out to be thinner in practice than $300,000 on $100,000 suggests, the model stays a niche.
Frequently asked questions
What is 1inch Aqua?
Aqua is a shared liquidity protocol from decentralized exchange aggregator 1inch. Rather than requiring providers to deposit tokens into a pool contract, it lets them approve a wallet balance that backs several trading positions at once. Tokens move only when a matching swap executes, and approvals can be revoked at any time.
Which blockchains does Aqua support?
Aqua launched publicly on 13 Ethereum Virtual Machine-compatible chains on July 28, 2026. Named networks include Ethereum, Arbitrum, Base, BNB Chain and Robinhood Chain. Providers set approvals separately for each token and each chain, so positions on one network do not draw on balances held elsewhere.
Is providing liquidity on Aqua safer than a standard pool?
Self-custody removes deposit risk, but 1inch says providers still face impermanent loss, adverse price movement and smart contract risk, and describes the product as built for experienced users. Fees are not guaranteed. The protocol completed eight independent security audits before the public launch.
