DEXes · Review

Active

DeepBook V3 Review 2026: Sui's On-Chain Order Book

DeepBook V3 is a fully on-chain central limit order book on Sui that serves as shared liquidity for other apps, and has added a Predict product for custom price markets. It is self-custodial and audited, but limited to Sui and restricted in several regions.

By the DappsAtlas editorial team · Updated Nov 4, 2026

DappsAtlas score

7.5/10

Good

Visit DeepBook V3

Our verdict on DeepBook V3

7.5/10

DeepBook V3 suits Sui users, market makers and developers who want deep shared liquidity and self-custodial settlement from an order book. Its main strength is that the same book backs 15+ apps, with audits and a bug bounty listed. The main caveats are that it is Sui-only, fee rates are not published on the homepage, Predict is BTC-only and barred for US users, and a long list of countries is excluded.

Score breakdown

How DeepBook V3 scores

Security: 7.5/10
Ease of use: 7.0/10
Fees: n/a
Features: n/a

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 DeepBook V3?

DeepBook V3 is a fully on-chain central limit order book on Sui. DefiLlama describes it as the liquidity layer of Sui, and it lists about $12.3M in TVL as of public data, with the DEEP token and two audits listed.

The homepage says the same book powers 15+ apps, reports $41.2M in 24h volume and more than $20B in cumulative volume. These are self-reported figures and we have not verified them independently.

The site now presents two products, Spot and Predict. Predict is a prediction-style market where users pick any price level or range over timeframes from one minute to two weeks. It is BTC-only for now and not available to US users. Developers and desks can also use an API, SDK and indexer.

How DeepBook V3 works

A central limit order book matches buyers and sellers at specific prices, as on a traditional exchange. DeepBook runs this entirely on-chain on Sui. Other apps can route orders into the same book, so liquidity is shared instead of being split across many separate venues.

Settlement is on-chain and atomic. According to the homepage, funds stay in the user's wallet until an order fills, so there is no custodial house account.

Predict is a separate product. Instead of a fixed menu of yes-or-no markets, users choose a price level or range and a timeframe from one minute to two weeks. A single shared pool takes the other side of each trade, so a quote is always available. BTC is the only supported asset at present.

7 features

Key features

On-chain order book

A fully on-chain central limit order book that holds the shared liquidity for Sui apps rather than splitting it across separate venues.

Shared liquidity

The homepage says the same book sits behind 15+ apps on Sui, so depth is pooled instead of fragmented.

Predict markets

Users can quote any price level, direction or range across timeframes from one minute to two weeks, with a shared pool taking the other side.

API and SDK access

Place, cancel and settle orders directly against the book through an API and SDK.

Indexer endpoints

Endpoints for historical fills, depth snapshots and market data are available for desks and bots.

Self-custodial settlement

Funds stay in the user's wallet until an order fills, with atomic onchain settlement.

DEEP fee burn

A portion of trading fees is used to burn DEEP, with 125.7M reported burned on the homepage.

Pros and cons

What we like

Fully on-chain order book with self-custodial, atomic settlement
Shared liquidity used by 15+ apps on Sui, which can deepen markets
Contracts are described as audited with an active bug bounty and live since 2023
API, SDK and indexer access suited to market makers and bots
DEEP tokens are burned from trading fees, with 125.7M reported burned

Watch out for

Concentrated on Sui, so it is only useful to people who hold or bridge assets there
Predict supports BTC only for now and is unavailable to US users
Access is blocked in a long list of jurisdictions, including China, Russia, Singapore and the Philippines
The app was still showing a waitlist of 120K+, so access may not be open to everyone
Fee schedule is not published on the homepage, so costs are hard to compare before trading
Trading digital assets, especially custom range prediction positions, can lead to loss of capital

DeepBook V3 fees

The homepage does not publish a trading fee schedule. It does say that DEEP is burned from trading fees, which implies fees are charged, but the rates are not stated publicly.

Users should check the app and the official documentation for current maker and taker fees, and remember that Sui network gas fees apply to on-chain transactions.

Is DeepBook V3 safe?

The homepage says the contracts are audited, covered by an active bug bounty and have been live on Sui since 2023. DefiLlama lists two audits. The audit reports themselves were not part of public sources, so readers should read them directly. No incidents are mentioned publicly.

Custody is self-custodial, so the main risks are smart-contract bugs, wallet security and market risk rather than a platform holding deposits. The site states that the app is not available in all jurisdictions and that nothing on it is financial advice. Predict-style positions can lose their full value, so only risk what you can afford to lose.

6 steps

How to get started with DeepBook V3

1
Check that DeepBook is available in your jurisdiction and, for Predict, that you are not a US user.
2
Set up a Sui-compatible wallet and fund it with the assets you want to trade.
3
Open the DeepBook app from the official site and connect the wallet.
4
Pick a spot market, or Predict if available to you, and review the quoted price and size.
5
Place an order and confirm the transaction in your wallet.
6
Developers can read the docs, then use the API, SDK and indexer to build or automate trading.

Open DeepBook V3

Who DeepBook V3 is for

DeepBook V3 fits traders who already use Sui and want order-book execution, builders who need programmatic access to liquidity, and market makers running bots. It is less suitable for people in excluded jurisdictions, US users who want Predict, or anyone looking for a multi-chain venue.

DeepBook V3 FAQs

What is DeepBook V3?

DeepBook is a fully on-chain central limit order book and the liquidity layer of Sui. Other apps can route orders through it, and it also has its own app for spot trading and a prediction product called Predict.

Is DeepBook self-custodial?

The homepage says funds settle onchain and stay in your wallet until an order fills. There is no house account holding deposits and no withdrawal queue. The site describes the model as self-custodial.

What is DeepBook Predict?

Predict lets you name any price level and direction, or a range between two prices, over timeframes from one minute to two weeks. The market is created on demand, and one shared pool takes the other side of each trade. BTC is currently the only supported asset.

Can US users use DeepBook?

No. The homepage says the DeepBook app is available in the US except for Predict, which is not available to US users. Always check the current terms and make sure the service is legal where you live.

Which countries are excluded?

The listed excluded jurisdictions are Afghanistan, Belarus, China, Cuba, Iran, North Korea, Myanmar, Philippines, Singapore, Russia and Syria. Check the official FAQ for any updates.

Does DeepBook have a token?

DEEP is the token linked to DeepBook. The homepage reports 125.7M DEEP burned from trading fees, though it does not explain the full token mechanics.

Can developers and bots use it?

Yes. The site offers API and SDK access to place, cancel and settle orders, plus indexer endpoints for historical fills and depth snapshots. It says no allowlist is required to start reading the book.

Compare

DeepBook V3 alternatives

All alternatives

Momentum

DEXes

Momentum is a Sui-based ve(3,3) DEX with concentrated liquidity, vaults and a bridge, aimed at traders, liquidity providers and MMT holders.

TVL $3.41M−1.1%Sui

Turbos

DEXes

Turbos is a non-custodial, concentrated-liquidity decentralized exchange on the Sui network, for traders and liquidity providers.

TVL $2.85M−0.1%Sui

Magma

DEXes

Magma Finance is a concentrated-liquidity AMM DEX on Sui, designed for MOVE-based chains, for traders and liquidity providers in that ecosystem.

TVL $1.90M+1.5%Sui

Uniswap V3

DEXes

Uniswap V3 is a non-custodial decentralized exchange protocol for token swaps and concentrated liquidity provision across 40+ chains.

TVL $1.51B−3.7%Ethereum · Base · Arbitrum +38

Uniswap V4

DEXes

Uniswap V4 is the latest Uniswap DEX version with hooks and concentrated liquidity, running on 22 chains for self-custody token swaps and liquidity provision.

TVL $1.14B−2.9%Ethereum · Robinhood Chain · Base +19

Uniswap V2

DEXes

Uniswap V2 is a non-custodial automated market maker DEX on 17 chains for token swaps and liquidity provision, with about $938M TVL.

TVL $864M−4.1%Ethereum · Base · Polygon +14

Same category

More DEXes

DEXes rankings

Curve

DEXes

Curve is a decentralized exchange on Ethereum built for low-slippage swaps of stablecoins and similar assets, with CRV governance and a crvUSD stablecoin.

Ethereum