DEXes · Review
Active1DEX Review 2026: Order Book DEX with Passkey Login
1DEX is an order book decentralized exchange that markets multi-chain trading and passkey-based accounts. Its tracked TVL is small, so check liquidity and custody details before trading.
By the DappsAtlas editorial team · Updated
DappsAtlas score
6.2/10
Mixed
Our verdict on 1DEX
6.2/101DEX suits traders who want a centralized-exchange-style order book with passkey login and no gas fees, and who are comfortable with a hybrid custody model. Its main strength is the familiar trading experience combined with open-source contracts and listed audits. The main caveat is size: TVL is only around $42,510, the fee schedule is not stated on the homepage, and custody relies partly on third-party custodians. Read the custody FAQ and audit reports before depositing, and start small.
Score breakdown
How 1DEX scores
- Security
- 5.5/10
- Ease of use
- 7.0/10
- Fees
- 6.0/10
- Features
- 6.5/10
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 1DEX?
1DEX is a decentralized exchange built around an order book. Its homepage calls it a high-performance, cross-chain exchange for BTC, ETH, SOL, TRON, BSC, EOS and XSAT assets, with non-custodial trading and no gas fees.
DefiLlama lists it in the DEX category on EOS, with about $42,510 in TVL and a 7-day change of -7.7%. It has been listed since April 2025, shows two audits, and has no token of its own. The official Twitter account is 1DEX_COM.
The homepage promotes itself as the top platform for trading $A, a WLFI-related token, and highlights Passkey sign-in, open-source contracts and permissionless token listing. It also says assets are managed by regulated custodians, which is a hybrid approach compared with purely self-custodial DEXs.
How 1DEX works
1DEX is an order book exchange. Instead of trading against a liquidity pool, buyers and sellers post bids and asks, and the system matches them. The homepage says matching and settlement happen on-chain, so trade data is recorded and visible.
Users log in with a blockchain account protected by Passkey, which uses device biometrics such as fingerprint or face recognition. The site says smart contracts run the exchange without a central server, and that assets are held by regulated custodians whose holdings can be verified on-chain.
The platform is marketed as multi-chain, covering assets from Bitcoin, Ethereum, Solana, TRON, BSC and EOS networks, plus XSAT. DefiLlama tracks its on-chain value on EOS. New tokens can be listed through smart contracts without manual approval.
7 features
Key features
01
Order book trading
Trades are matched through an order book rather than an automated market maker, with matching and settlement described as on-chain.
02
Passkey accounts
Accounts use Passkey, a biometric sign-in method such as fingerprint or face recognition, instead of a traditional password.
03
Multi-chain assets
The homepage lists support for BTC, ETH, SOL, TRON, BSC, EOS and XSAT assets.
04
No gas fee
The homepage says users pay no gas fee and a low trading fee.
05
Permissionless token listing
Token listing requests are handled by smart contracts without a centralized review, according to the homepage.
06
Developer SDKs and APIs
The site says it offers SDKs and APIs for developers building on the exchange.
07
Open-source contracts
Smart contracts are described as open source, with audit reports available to the public.
Pros and cons
What we like
- Order book model gives familiar limit-order trading for people used to centralized exchanges.
- Passkey login removes passwords and uses device biometrics.
- The homepage says there are no gas fees and trading fees are low.
- Contracts are described as open source, with audit reports public; DefiLlama lists two audits.
- Token listing is automated through smart contracts without central review.
- Supports assets from several chains, including BTC, ETH, SOL, TRON, BSC and EOS.
Watch out for
- TVL is small at about $42,510, with a 7-day change of -7.7%, which suggests thin liquidity.
- The homepage claims 'regulated custodians' hold on-chain assets, which adds counterparty risk that differs from fully self-custodial trading.
- Specific fee rates are not published on the homepage, only 'no gas fee, low trading fee'.
- Performance claims such as 10,000+ TPS and millisecond execution are self-reported and not independently verified.
- DefiLlama tracks it only on EOS, while the homepage markets multi-chain trading, so the scope of cross-chain liquidity is unclear.
- No native token is listed, and the homepage promotes trading of a third-party token ($A), so liquidity may concentrate in a few markets.
1DEX fees
The homepage advertises 'no gas fee, low trading fee' but does not publish exact maker or taker percentages in the text reviewed. Specific rates are not stated publicly.
Users would likely see the actual trading fee schedule in the trading interface or the site's support pages. Deposit and withdrawal costs on the underlying chains are also not described, so check these before moving funds.
Is 1DEX safe?
The homepage says smart contracts have been audited by multiple security firms, naming Blocksec, and DefiLlama lists two audits. It also says contracts are open source and audit reports are public. We have not reviewed the reports, so read them directly for scope and findings.
Custody is the key point. The site says on-chain assets are managed by regulated custodians and are verifiable on-chain. That means users rely on those custodians in addition to the smart contracts. The project does not name the custodians or describe their regulation.
TVL is low, so liquidity and exit risk are real. No incidents are mentioned publicly, but none were searched for. Only trade funds you can afford to lose, and check that using the service is permitted where you live.
6 steps
How to get started with 1DEX
- 1
Open the official 1DEX website and review the FAQs on custody, Passkey and key generation.
- 2
Check that your device supports Passkey and log in to create a blockchain account.
- 3
Review the audit reports and the custodian information the site says are publicly available.
- 4
Deposit a small amount of a supported asset such as BTC, ETH, SOL, TRON, BSC, EOS or XSAT.
- 5
Check the order book depth and fee schedule for your chosen market before placing an order.
- 6
Start with small orders and confirm how withdrawals work before trading larger amounts.
Who 1DEX is for
1DEX is for traders who prefer order book trading and biometric login, and who want access to assets from several chains in one place. It is less suited to users who need fully self-custodial trading or deep liquidity, given the small TVL and the custodian model.
1DEX FAQs
What is 1DEX?
1DEX describes itself as an order book-based decentralized exchange supporting trading of BTC, ETH, SOL, TRON, BSC, EOS and XSAT assets. DefiLlama lists it in the DEX category on EOS.
Is 1DEX non-custodial?
The homepage says users keep control of funds through non-custodial trading, but it also says on-chain assets are managed by regulated custodians. Read the custody FAQ on the site to understand exactly who holds what.
What are the fees on 1DEX?
The homepage says there is no gas fee and a low trading fee. It does not state exact maker or taker rates in the text we reviewed, so check the fee information in the trading interface.
Has 1DEX been audited?
The homepage says it has been audited by multiple security companies and names Blocksec as an example. DefiLlama lists two audits. Audit reports are said to be publicly accessible on the site.
Does 1DEX have its own token?
No. DefiLlama lists the token as none. The homepage does promote trading of a token called $A, described as a WLFI-related offering, but that is not a 1DEX token.
What is Passkey login on 1DEX?
The homepage describes Passkey as identity authentication that combines cryptography and biometrics, so users can sign in with fingerprint or face recognition. The site has a FAQ explaining how private keys are generated.
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Guides
Guides that mention 1DEX
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How we checked
Sources
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