Vyper Smart Contract Audit
Security review for Vyper contracts and mixed Solidity/Vyper systems deployed across Ethereum and other EVM networks.
Vyper's design removes some Solidity footguns, but production Vyper contracts still need careful review of external calls, accounting, storage, oracle usage, access control, and upgrade or deployment assumptions.
CTDSEC audits Vyper code in the context of the entire EVM protocol, especially when Vyper contracts interact with Solidity contracts or third-party DeFi systems.
What CTDSEC reviews
The review is tailored to the target chain and codebase, but the audit always starts with assets at risk, trust boundaries, and the concrete ways the protocol can fail.
Audit focus
Vyper Smart Contract Audit with manual review, tool-assisted coverage, and remediation support.
Audit Coverage
- External calls, callback behavior, and reentrancy protections
- Storage layout, immutables, initialization, and deployment assumptions
- Oracle reads, precision, decimal conversion, and stale data
- Access control, governance, and emergency actions
- DeFi accounting and invariant preservation
- Mixed-language integration with Solidity contracts
Risk Areas
- Unsafe external-call ordering
- Incorrect assumptions about compiler or EVM behavior
- Precision loss in financial calculations
- Governance or admin controls with too much power
- Integration risk across mixed Vyper and Solidity systems
Deliverables
- Vyper-focused findings with EVM context
- Manual review notes and reproduction guidance
- Remediation support and retest recommendations
- Final report prepared for technical stakeholders
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Prepare for Your Audit
Practical review questions and scoping guidance for your engineering team.
Smart Contract Audit Checklist
A practical smart contract audit checklist covering scope, access control, accounting, oracles, upgrades, tests, deployment, and remediation.
How to Prepare for a Smart Contract Audit
How protocol teams can prepare repositories, documentation, tests, deployment details, and scope before a smart contract audit.
How Much Does a Smart Contract Audit Cost?
What affects smart contract audit cost, including code size, complexity, blockchain ecosystem, documentation, testing, and remediation needs.
Smart Contract Audit FAQ
Short answers for teams preparing an audit scope.
What does a vyper smart contract audit include?
It includes scope confirmation, manual code review, tool-assisted analysis where useful, severity-ranked findings, remediation guidance, and a final report for the agreed disclosure model.
Can CTDSEC review fixes after the audit?
Yes. Fix verification can be included after the team remediates reported findings, using a new commit and a clear change summary.
How is a vyper smart contract audit priced?
The quote depends on the agreed code scope, complexity, dependencies, and remediation review. Start with a project description; we can clarify repository access and timeline by email.
Get a smart contract audit quote
Tell us what you are building and when you plan to launch. Start with a short description; repository access and technical scope can follow.