Derivatives · Review
Cap Finance v1-v3 Review 2026: Arbitrum Perps Protocol
Cap Finance is a decentralized perpetual-futures protocol on Arbitrum where users trade markets such as BTC/USD and ETH/USD with leverage from their own wallet. TVL is small and no audits are listed, so it suits experienced traders who accept that risk.
By the DappsAtlas editorial team · Updated
DappsAtlas score
5.2/10
Mixed
Our verdict on Cap Finance v1-v3
5.2/10Cap Finance suits experienced DeFi traders who want wallet-based, leveraged BTC and ETH perpetuals on Arbitrum and who understand liquidation risk. Its strengths are open-source code, no account requirement and an advertised 0% trading fee. The main caveats are a small TVL of about $206,000, no listed audits and unpublished team and fee details. Beginners and anyone wanting a regulated venue should look elsewhere.
Score breakdown
How Cap Finance v1-v3 scores
- Security
- 4.0/10
- Ease of use
- 6.0/10
- Fees
- 6.0/10
- 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 Cap Finance v1-v3?
Cap Finance is a decentralized derivatives protocol on Arbitrum. It lets users trade crypto markets such as BTC/USD and ETH/USD with leverage. It describes itself as decentralized, open source and accessible to everyone, and one source calls it one of the older decentralized perpetual-futures protocols.
Its DeFi data shows about $206,000 in total value locked, up 2.4% over seven days, and no audits listed. The protocol has a native token, CAP. The GitHub organisation has ten repositories, including a Svelte web interface for version 3.1.
The homepage could not be reviewed, and the team, licensing and governance are not published in the sources checked. Treat it as a small, niche perpetuals venue.
How Cap Finance v1-v3 works
Cap is a perpetual-futures protocol. A perpetual is a contract that tracks the price of an asset, such as BTC against the US dollar, with no expiry date. A trader picks a market, deposits collateral and chooses leverage, which makes the position larger than the deposit. Gains and losses are both magnified.
Because the protocol is decentralized, trades are executed by smart contracts on Arbitrum and the trader keeps funds in their own wallet until they deposit. There is no exchange account. Price feeds, liquidity sourcing and funding mechanics are not described in the sources reviewed, so users should read the documentation for those details.
If a position loses too much of its collateral, it is liquidated and the collateral is lost. Higher leverage puts the liquidation price closer to the entry price.
6 features
Key features
01
Leveraged perpetual trading
Users can trade markets such as BTC/USD and ETH/USD with leverage using on-chain contracts instead of a centralized exchange account.
02
Wallet-based access
Trading happens from the user's own wallet, with no account sign-up described.
03
Open-source code
The project publishes code on GitHub, including a web interface for version 3.1 built with Svelte.
04
Arbitrum deployment
The protocol runs on Arbitrum, which generally means lower transaction costs than Ethereum mainnet.
05
Advertised zero trading fees
One source says trades carry 0% fees, though other costs such as funding and gas are not detailed.
06
Native CAP token
The protocol has a native token, CAP, described by one source as its utility token.
Pros and cons
What we like
- Lets users trade BTC/USD and ETH/USD perpetuals with leverage from a wallet
- Open-source code is public on GitHub
- Runs on Arbitrum, with lower costs than mainnet
- One source reports 0% trading fees
- Described as one of the older decentralized perpetuals protocols
- No account is needed, according to a market data page
Watch out for
- Total value locked is only about $206,000, so liquidity is small for a perpetuals venue
- No audits are listed for the protocol
- The team, licensing and governance details are not published in the sources reviewed
- Leveraged trading can liquidate a position quickly, and a thin market can make that worse
- The 0% trading fee claim comes from a single source, and funding or spread costs are not described
- The listing covers versions 1 to 3, and it is unclear which version is the current one
Cap Finance v1-v3 fees
One source describes trading on Cap as free, with 0% fees. The project's own fee page could not be reviewed, so the full fee structure is not confirmed here.
Leveraged protocols usually have other costs, such as funding rates, spreads, liquidation penalties and network gas on Arbitrum. Check the trading interface for these figures before opening a position.
Is Cap Finance v1-v3 safe?
No audits are listed for Cap Finance in the DeFi data reviewed. The code is public on GitHub, which allows independent inspection but is not a substitute for a professional audit. Users should treat smart-contract risk as real, especially with a small TVL.
The protocol is non-custodial in the sense that you trade from your own wallet, but deposited collateral sits in smart contracts. Leverage can wipe out a position quickly. Licensing, team identity and incident history are not covered in the sources reviewed. Never deposit more than you can afford to lose.
6 steps
How to get started with Cap Finance v1-v3
- 1
Confirm that using leveraged crypto trading platforms is legal where you live.
- 2
Set up a self-custody wallet that supports Arbitrum and keep the seed phrase offline.
- 3
Bridge or send a small amount of ETH and the trading collateral to Arbitrum.
- 4
Find the current Cap interface through the project's official channels and check that you are on the right address.
- 5
Read the documentation for fees, collateral, leverage limits and liquidation rules.
- 6
Start with a small position and low leverage, and monitor your liquidation price.
Who Cap Finance v1-v3 is for
Cap Finance is for experienced crypto users who already hold a self-custody wallet, understand perpetual futures and liquidation, and are comfortable with small, less-audited DeFi protocols. It is not suited to beginners or to anyone who cannot afford to lose their collateral.
Cap Finance v1-v3 FAQs
What is Cap Finance?
Cap is a decentralized trading protocol on Arbitrum. It lets users trade crypto markets such as BTC/USD and ETH/USD with leverage directly from a wallet. It describes itself as open source and open to anyone.
Which blockchain does Cap Finance use?
Cap runs on Arbitrum, an Ethereum layer-2 network. You need a wallet that supports Arbitrum and funds on that network.
Does Cap Finance charge trading fees?
One price-tracking page describes Cap trades as free, with 0% fees. The project's own fee schedule was not available, so check the trading interface for funding rates, spreads or network gas costs before you open a position.
Do I need an account or KYC?
Cap is described as a protocol you use from your own wallet, with no account needed. The sources reviewed do not mention identity checks. Rules vary by country, so confirm that using it is allowed where you live.
What is the CAP token?
CAP is the native utility token of the protocol, according to one market commentary post. The sources reviewed do not describe its exact utility, so read the project's documentation before buying it.
Is Cap Finance safe?
No audits are listed for it in the data reviewed, and TVL is small. That does not mean it is unsafe, but smart-contract and liquidity risk are real. Only use funds you can afford to lose.
Compare
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How we checked
Sources
- 1.defillama.com/protocol/cap-finance-v1-v3
- 2.github.com/0xcap
- 3.decrypt.co/36237/decentralized-finance-is-now-a-3-billion-industry-or-a-bubble
- 4.cryptorank.io/price/cap_cryptopia
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