Smart Contract & DeFi DevelopmentYour first contracts holding real money, built by a team whose last ones still run.

Writing, testing and deploying the programs that hold and move value on a blockchain: a token and its vesting, an exchange or lending protocol, the issuance rules of a tokenized asset. The difference from ordinary software is that a deployed contract cannot be patched the way a server can, and the money it holds is reachable by anyone who finds a flaw. So the work is mostly decisions made before deployment: what the contract may do, what it may never do, and who can change it.

If the question is a token and its launch, package one: the token, vesting and unlocks, the admin model, the launch window. If users will trade, lend, stake or deposit through your contracts, package two: a protocol with an economic model that has to hold under attack. If the token represents an asset off-chain with rules about who may hold it, package three. If you are not sure, the Web3 Architecture Review answers it in two weeks and is credited in full.

At the contract level, yes: issuance with transfer rules, allowlists and KYC gating, distributions and redemptions, hooks for custody and price oracles. The legal structure, the licence and the issuer are yours or your counsel's; we build what that decision allows. We have no public tokenized issuance to show yet, and we say so on the first call rather than on a case card.

Only if that was decided before launch. Upgradeable means someone holds a key that can change the rules, and your users have to trust that key. Immutable means a flaw needs a migration. On the DEX we chose immutable core contracts and refused post-launch tuning; 2.5 years later no intervention has been needed. The choice is made per contract, with its trust cost written down, before deployment.

By assuming them. The threat model includes the arbitrageur, the sandwich bot and the whale, and the tests attack the economics, not only the functions. A correct contract with an exploitable economy fails as surely as a buggy one. MEV itself is not removed; the protocol is modeled to hold under it, and the launch window, when open liquidity is thinnest, gets a runbook of its own.

The Web3 Architecture Review costs $4,850, takes two weeks, and is credited in full against any work from $15,000 within 90 days. The three packages each become a fixed price with the written definition of ready, given on the first call. For reference, the market quotes a simple token contract from about $5,000 and a DeFi protocol audit between $10,000 and $100,000 depending on the tier; the audit is a separate line in every quote we give. Around the packages: a five-day review of inherited contracts at a fixed price, and a monthly run retainer after launch, both priced on the same call.

No number before the review or the first call, because the date is set by two things outside the code: the audit tier and its queue, and how many of the admin decisions are already made. The definition of ready comes with the fixed price and the dates, kickoff follows within two weeks of signing it, and the launch window is planned as part of the work, not after it.