Terms of use

v4 Builder is software. It writes Solidity from the modules and numbers you choose, compiles it, simulates it on the chain, and prepares transactions that your own wallet signs and sends. It is not a broker, an exchange, a custodian, an investment adviser or a fiduciary, and it never holds your funds or your keys.

Nothing on the site, in the docs or in the API is investment, financial, legal or tax advice. Descriptions of what a hook does explain how the code behaves; they are not a recommendation to deploy it, trade through it or hold any asset.

A hook deployed through the factory is sent by your wallet, and the factory records you as its builder. Once it is on chain it runs without us: we cannot pause it, change it, upgrade it or remove it, and neither can anyone else. The same holds for the pools you open with it.

You decide what the hook does and with which numbers. You are responsible for that choice, for the pools you open, for the funds you put in them, and for following the rules that apply to you where you are.

A proof is a simulation. It shows how the hook behaves on the chain state of the block it ran on, with the swaps and wallets it used. Prices, liquidity, balances and other contracts change after that block, and a real swap can meet conditions no simulation tried. A passing proof is evidence about that run, not a promise about every future swap.

The generated code is provided as is, without warranty of any kind. Smart contracts can fail in ways nobody foresaw. Read the source the builder shows you, and the proof docs, before you deploy.

A deploy through the factory costs the fee the factory reads at that moment, 0.0003 ETH today, plus the chain's gas. Wallets holding the free-tier amount of $V4B pay no deploy fee. Fees are forwarded to the $V4B stakers' distributor and are not refunded: a transaction that went through cannot be undone. Listing on v4 Marketplace, its stake and its royalties are governed by v4 Marketplace's own terms.

$V4B is the token of v4 Builder. Holding it can make deploys free and staking it can share in deploy fees, as the contracts say. It has no promised value, no promised return and no claim on anyone. Its price, if it has one, can fall to nothing. Nothing on this site is an offer or a solicitation to buy it.

The public endpoints are offered as they are, may be rate limited, and may change. Do not use them to overload the service or to attack anyone. Automated use is welcome within those limits: the API docs say how.

v4 Builder builds hooks for the Uniswap v4 protocol, which is open software. v4 Builder is not affiliated with, endorsed by or sponsored by Uniswap Labs or the Uniswap Foundation. Uniswap is a trademark of its owner, used here only to say what the hooks are for.

To the extent the law allows, v4 Builder and the people behind it are not liable for any loss arising from the use of the site, the API, the generated code, the factory or any hook or pool, including lost funds, failed transactions, bugs, chain conditions or the acts of other users. Where the law does not allow this exclusion, liability is limited to the deploy fees you paid in the twelve months before the claim.

These terms may change; the new version is posted here with its date and applies from then on. The privacy policy and the cookies policy are part of them.