DEXes · Review
ActiveMetropolis DLMM Review 2026: Liquidity Book DEX on Sonic
Metropolis DLMM is a Liquidity Book decentralized exchange built natively on Sonic, aimed at zero-slippage trades and higher yields for liquidity providers. It is a small, early-stage venue with no listed audits, so it suits experienced users who accept that risk.
By the DappsAtlas editorial team · Updated
DappsAtlas score
5.0/10
Mixed
Our verdict on Metropolis DLMM
5.0/10Metropolis DLMM is a niche Liquidity Book DEX on Sonic. It suits experienced liquidity providers who understand bin-based ranges and want exposure to the Sonic ecosystem. Its main strength is the fixed-price bin design, which can give clean fills where liquidity is deep. The main caveat is risk: TVL is roughly $101,000, no audits are listed and fees are not published. Traders needing deep liquidity are better served elsewhere, and any deposit should be small.
Score breakdown
How Metropolis DLMM scores
- Security
- 3.5/10
- Ease of use
- 6.0/10
- Fees
- n/a
- Features
- 5.5/10
Scores run from 0 to 10 and are based only on facts we could verify. Where information was missing we mark the score n/a rather than guess.
What is Metropolis DLMM?
Metropolis DLMM is a decentralized exchange built natively on the Sonic blockchain. It uses a Liquidity Book design and says it offers zero-slippage trades and higher yields for liquidity providers.
The protocol was listed in December 2024. Its total value locked is about $101,000, down roughly 5% over the past week. That is a small base for a DEX, so liquidity depth is limited. It has no token and no audits are listed.
The homepage message is short. It promotes trading with zero slippage and earning real yield as a DeFi market maker and liquidity provider with unlimited control. It does not publish fee tiers, team details or a security report.
How Metropolis DLMM works
A Liquidity Book DEX, also called a discrete liquidity market maker (DLMM), divides the price axis into small bins. Each bin holds liquidity at a single fixed price. While the market price sits inside a bin, traders swap at that fixed price, so there is no slippage within it.
If a trade is large enough to use up a bin, it moves into the next one and fills at that bin's price. Providers decide which bins to fund, so they can concentrate capital near the current price or spread it over a wider range. They earn fees from swaps that pass through their bins.
The trade-off is active management. A provider whose bins fall out of the market price range holds one asset and earns no fees until the price returns or the position is rebalanced.
4 features
Key features
01
Liquidity Book design
Liquidity is split into discrete price bins. Trades inside a bin execute at one fixed price, which is the basis of the zero-slippage claim.
02
Sonic-native DEX
The exchange is built for Sonic rather than ported from another chain, so it relies on that network for settlement and gas.
03
Custom liquidity ranges
Providers pick the price ranges where their capital sits, which gives control over where fees are earned.
04
Fee-based yield
Fees from trades routed through a provider's bins accrue to that provider, which the project frames as real yield.
Pros and cons
What we like
- Liquidity Book design gives fixed-price trades inside each price bin
- Built natively for Sonic rather than as a multichain fork
- Liquidity providers choose their own price ranges
- No token is required to use it, which keeps the model simple
- Yield comes from trading fees, not token emissions
Watch out for
- Total value locked is only about $101,000, so liquidity is thin and larger trades can still move the price
- No security audits are listed for the protocol
- Runs only on Sonic, so it depends on a single chain and its bridges
- Concentrated liquidity needs active management, and a position can stop earning fees if the price leaves its range
- The project does not publish a fee schedule, team details or a token on its homepage
Metropolis DLMM fees
Metropolis does not publish a fee schedule on its homepage. Liquidity Book exchanges usually charge a swap fee that goes to liquidity providers, and the rate can vary by pool. Check the fee shown for each pool in the app before trading or depositing.
On top of swap fees, users pay Sonic network gas for each transaction. No protocol token or separate platform fee is listed.
Is Metropolis DLMM safe?
No audits are listed for Metropolis DLMM, and the project does not publish audit reports or a bug bounty on its homepage. Smart-contract risk is therefore unquantified. Liquidity providers face impermanent loss and out-of-range risk, and the small TVL means thin markets.
The exchange is non-custodial, so users keep their assets in their own wallets except for funds deposited in pools. The project does not publish its team or regulatory status. Only commit amounts you can afford to lose.
6 steps
How to get started with Metropolis DLMM
- 1
Set up a wallet that supports Sonic and add the network if needed.
- 2
Fund the wallet with the tokens you want to trade plus a small amount of Sonic's native token for gas.
- 3
Open the Metropolis app from the official website and connect the wallet.
- 4
For a swap, choose the token pair and check the quoted price and any price impact before confirming.
- 5
To provide liquidity, pick a pool, choose your price bins and deposit amounts, then confirm.
- 6
Monitor your position, since price moves can take it out of range and stop fee earnings.
Who Metropolis DLMM is for
Metropolis DLMM is for DeFi users already active on Sonic who understand concentrated liquidity and are comfortable managing price ranges. It is a poor fit for beginners, for anyone who needs audited contracts, and for traders who need deep liquidity for large orders.
Metropolis DLMM FAQs
What is Metropolis DLMM?
Metropolis DLMM is a decentralized exchange on the Sonic blockchain. It uses a Liquidity Book design, where liquidity is placed in discrete price bins, to offer trades without slippage inside a bin and more control for liquidity providers.
Does Metropolis really have zero slippage?
Within a single price bin, a Liquidity Book trade executes at a fixed price, so there is no slippage inside that bin. A large trade that crosses several bins will fill at different prices in each, so the effective price can still change if liquidity is thin.
How do liquidity providers earn on Metropolis?
Providers choose price bins and deposit tokens into them, and they earn trading fees when swaps pass through those bins. The project describes this as earning more real yield with unlimited control. Yield depends on trading volume, which the project does not state.
Is Metropolis DLMM audited or safe?
No audits are listed for the protocol, and the project does not name any on its homepage. Total value locked is small, at roughly $101,000. Treat it as high risk and size positions accordingly.
Does Metropolis DLMM have a token?
No token is listed for Metropolis DLMM. Do not assume an airdrop or governance token exists unless the project announces one on its official channels.
Which blockchain does Metropolis use?
It runs on Sonic only, according to the available listing. You need a Sonic-compatible wallet and Sonic's native token for gas.
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How we checked
Sources
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