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Synthswap Review 2026: Base DEX and Cross-Chain Swaps

Synthswap is a Base-based decentralized exchange advertising V2, V3, and cross-chain swaps. Its basic offering is clear, but key details about fees, security, and cross-chain support are not published.

Base

By the DappsAtlas editorial team · Updated Nov 6, 2026

DappsAtlas score

4.5/10

Weak

Visit Synthswap

Our verdict on Synthswap

4.5/10

Synthswap may suit Base users looking for a DEX that advertises both V2 and V3 swaps, or who want to explore cross-chain trading from one exchange. Its stated range of swap types is the main strength. The caveat is that important practical details—including fees, supported pairs and networks, the cross-chain mechanism, and audit status—are not published. Treat it as an option to investigate rather than assuming its advertised features or security have been independently established.

Score breakdown

How Synthswap scores

Security: n/a
Ease of use: 5.0/10
Fees: n/a
Features: 5.0/10

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 Synthswap?

Synthswap is a decentralized exchange associated with Base. It advertises V2 and V3 swaps as well as cross-chain swaps, positioning it for users who want to trade tokens through a DEX rather than a centralized exchange.

The project does not specify supported token pairs, cross-chain networks, or how its cross-chain swaps are implemented. It also does not explain the role of SYNTH. Fees, team details, and audit status are not published.

How Synthswap works

Synthswap describes itself as a decentralized exchange on Base offering V2 and V3 swaps. DEX swaps commonly use liquidity pools: users trade against assets deposited in smart contracts, and the pool’s available balances help determine the exchange rate. Synthswap does not publish enough detail to confirm its specific pool design, pricing rules, or supported trading pairs.

The project also advertises cross-chain swaps. Such swaps generally coordinate transactions across more than one network, but Synthswap does not specify which networks it supports or how it handles routing and settlement. Check the selected networks, quote, and transaction details carefully before confirming a swap.

4 features

Key features

V2 swaps

Synthswap advertises V2 swaps on Base. Public sources do not specify supported pairs or the details of its V2 implementation.

V3 swaps

The exchange also advertises V3 swaps. Specific liquidity options and supported pools are not described.

Cross-chain swaps

Synthswap lists cross-chain swaps, but does not specify supported destination networks or how assets are moved between chains.

SYNTH token

SYNTH is associated with the project. Its utility and relationship to trading are not explained.

Pros and cons

What we like

Offers V2 and V3 swap options on Base.
Advertises cross-chain swaps alongside Base trading.
Uses a decentralized-exchange model rather than presenting itself as a centralized exchange.

Watch out for

The exchange’s fees and swap pricing are not published.
The details of its cross-chain swap mechanism and supported networks are not specified.
Audit status, contract addresses, and security procedures are not published.
The SYNTH token’s role in the exchange is not explained.

Synthswap fees

Synthswap does not publish a fee schedule in its available project description. Review the quote and wallet transaction details before approving a swap; these may show transaction costs, but the project’s own fee structure is not specified.

Is Synthswap safe?

Synthswap’s audit status, contract addresses, and security procedures are not published. DEX users face smart-contract risk, token and liquidity risks, and the possibility of loss from signing an incorrect or malicious transaction. Cross-chain swaps can add further operational and settlement risks, and the project does not explain its mechanism.

The project’s regulatory status is not specified. Verify the interface and transaction details independently before connecting a wallet or signing; do not treat the presence of a SYNTH token as evidence of security.

5 steps

How to get started with Synthswap

1
Verify that you have the official Synthswap interface before connecting a wallet; its official URL is not established here.
2
Use a wallet that supports Base and connect it to the interface if available.
3
Choose the swap type and the tokens or networks shown in the interface.
4
Review the quoted amount, any displayed fees, and the transaction details before approving or signing.
5
After the transaction, check the result in your wallet and on a Base block explorer.

Open Synthswap

Who Synthswap is for

Synthswap is aimed at crypto users who already have a wallet and want to swap tokens through a decentralized exchange on Base. Its advertised cross-chain feature may interest people seeking swaps across networks, but the supported chains and mechanics are not specified, so users should confirm those details before relying on it.

Synthswap FAQs

Which chain does Synthswap use?

Synthswap is described as operating on Base. It also advertises cross-chain swaps, but the other supported networks are not specified.

What can you swap on Synthswap?

The project describes V2 and V3 swaps, along with cross-chain swaps. It does not publish the supported token pairs or explain how its cross-chain routing works.

What fees does Synthswap charge?

Synthswap’s fee schedule is not published. Check the swap quote and wallet transaction details before confirming, including any network fees shown.

What is the SYNTH token used for?

SYNTH is the token associated with the project, but its purpose within the exchange is not explained. Do not assume it is needed for swaps or provides a specific benefit.

Is Synthswap audited?

Synthswap’s audit status and security procedures are not published. As with any DEX, smart-contract bugs, token risks, and incorrect transactions can result in losses.

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