What Is a Single-Sided Liquidity Pool? Explained

A single-sided liquidity pool lets you deposit just one asset — instead of an equal-value pair — while the protocol itself handles pairing it with the pool's other asset and absorbing the associated rebalancing risk.

Traditional AMM pools like the classic Uniswap v2 design require you to deposit two assets of equal value, and both sides are exposed to rebalancing as prices move, which is the source of impermanent loss. Single-sided pools were designed to let users — especially those who only want exposure to one token — provide liquidity without needing to source, hold, and risk-manage a second asset.

How single-sided pools work

There are a few common architectures, and they differ meaningfully in where the risk actually goes:

1. Protocol-owned counter-liquidity. The protocol maintains its own reserve of the paired asset (often its native token or a stablecoin) and pairs it against user deposits. The protocol's treasury, not the depositor, absorbs the rebalancing exposure on that side.
2. Vault-based single-asset staking. A vault accepts single-asset deposits and internally allocates them across multiple pools or strategies, netting out exposure across many positions rather than pairing 1:1.
3. Insurance-backed pools. Some designs let users deposit a single asset while a separate insurance or backstop pool covers potential IL, funded by a portion of fees or protocol revenue.

In all of these models, someone still bears the rebalancing risk that impermanent loss represents — it hasn't vanished, it has moved to the protocol, a vault, or an insurance fund.

Why protocols offer this

Single-sided pools lower the barrier to providing liquidity. A user who holds only one token doesn't need to acquire, hold, and manage a second asset just to earn yield — which meaningfully expands who can participate. For the protocol, this often means deeper liquidity for tokens that would otherwise struggle to attract balanced two-sided deposits (like a newly listed governance token).

Single-sided vs. traditional two-sided pools

	Single-sided pool	Traditional (two-sided) pool
Assets required	One	Two, equal value
Who bears rebalancing risk	Protocol, vault, or insurance fund	The liquidity provider directly
Simplicity for depositor	Higher	Lower — must manage both assets
Fee/yield share	Often lower (protocol takes a cut for risk absorption)	Depositor keeps full LP fee share
Protocol capital requirement	Needs its own reserves or backstop	None beyond user deposits

The risks that don't go away

Single-sided pools shift risk rather than eliminate it, and depositors should understand where it lands:

• Protocol solvency risk. If the protocol's own reserves absorbing the other side of the pool are insufficient during a sharp price move, the pool itself can become undercollateralized.
• Smart contract risk. These designs are often more complex than a plain AMM pool, meaning more code — and more potential attack surface.
• Withdrawal risk. Some single-sided vaults impose lockups or queue withdrawals during stress, since the protocol needs time to unwind its offsetting positions.
• Opaque yield sourcing. Advertised APY may partly come from token emissions rather than organic trading fees — always check the breakdown before assuming it's sustainable.

Where you'll encounter these pools

Single-sided liquidity shows up in liquid staking-adjacent products, yield aggregators, and some newer AMM designs aimed at simplifying the LP experience. It's a different risk profile than a standard DEX pool, so treat protocol due diligence — audits, TVL history, time in production — as seriously as you would for a lending market. Our yield farming guide walks through how to evaluate any pool's real yield versus its risk, and you can compare pools across chains on our yield rankings page.

Bottom line

Single-sided liquidity pools make providing liquidity easier by letting you deposit one asset instead of two, but the rebalancing risk that causes impermanent loss doesn't disappear — it's absorbed by the protocol, a vault, or an insurance mechanism, so your real question is whether that backstop is well-capitalized and battle-tested, not just whether the deposit process is convenient.