Key benefits
- Threat modelling before code — access, oracles, upgradeability and pause design settled in writing.
- Foundry invariant and fuzz suites plus Hardhat coverage, with gas reports on every release.
- OpenZeppelin bases, UUPS and multisig administration done by the book.
- Audit-prep pack auditors thank you for: spec, invariants, deployment scripts, known-tradeoff log.
How we write contracts
We specify boundaries first: which roles can do what, which values oracles may report, what upgrade path exists and what happens when it is paused. Implementation follows in weekly slices with invariants that attack the system — reentrancy shapes, allowance games, rounding dust, upgrade collisions. Internal review runs on every merge, and the deployment ceremony (keys, parameters, verification) is rehearsed on testnet before mainnet.
Standards coverage includes ERC-20, ERC-721 and ERC-1155, plus access control, rate limits and pausable flows where the risk model calls for them.
What is included
- Contract architecture and threat model
- Solidity system with NatSpec documentation
- Foundry test suite: unit, invariant, fuzz, fork
- Gas and coverage reports
- Audit-prep pack + deployment and verification scripts
Model, hammer, verify, ceremony
Threat model
Roles, oracles, upgrades and pause design agreed before implementation.
Sprints + review
Weekly contract slices with invariants and internal review per merge.
Stack
Solidity, Foundry, Hardhat, OpenZeppelin; Slither in CI.
Ceremony
Testnet rehearsal, multisig parameters, verification and audit support.
Proof: institutional vaults
UUPS vaults that passed risk review first time.
Role-scoped permissions, signing policy and reconciled NAV reporting.
ERC-20, ERC-721, ERC-1155, UUPS proxies, multisig administration, pausable and rate-limited flows.
No. We prepare systems so independent auditors move fast — then support review, remediate and evidence the fixes.
Contract systems start from $9,500 / ₹7,90,000 for a 4–6 week scope. Fixed price follows architecture mapping.
Related services
Build the next layer of the decentralized web.
Bring a frozen or draft protocol design — we will threat-model it with you.