Smart Contracts Audit for DeFi, NFT and Web3 Projects

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We review your smart contract code manually and with automated tools, analyse vulnerabilities and suggest gas optimizations before mainnet deployment.

Request Smart Contract Audit
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What We Do ?

What We Deliver in Smart Contracts Audit

We audit smart contracts for startups, DeFi protocols, DAOs, NFT projects and enterprises, using manual review, automated tests, gas optimization checks and a written vulnerability report.

Manual Code Review Line-by-Line

Our expert auditors manually inspect your Solidity development (or Vyper) contracts for logic flaws, access control weaknesses, underflows, overflows, and unexpected behavior.

Automated Vulnerability Scanning

We run your contracts through advanced static analyzers (like Slither, MythX, or Echidna) to detect reentrancy risks, timestamp dependencies, denial-of-service vectors, and other known vulnerabilities.

Gas Optimization Review

Identify inefficient loops, storage bloat, redundant calculations, and unnecessary event emissions to reduce gas fees and improve dApp usability.

Security Testing & Attack Simulation

Test for reentrancy attacks, oracle manipulation, flash loan exploits, overflow/underflow risks, and signature replay vulnerabilities.

Upgradeable Contract Review

Specialized review for UUPS, Transparent Proxy and Beacon Proxy setups, checking upgrade logic and access control for risks to user funds.

Admin & Permission Management Audit

Analyze your contract’s role-based permissions, owner-only functions, multisig access, and emergency controls (pause, upgrade, kill switches).

Detailed Audit Report with Risk Scoring

Deliver a categorized vulnerability report (Critical, High, Medium, Low, Informational) with recommendations and mitigation strategies.

Post-Audit Re-Verification and Report Badge

After fixes, we re-verify the code, confirm each patch, and can provide a badge for your website or dApp that links to the published audit report.

Industry Adoption

Why Smart Contract Audits Are Essential for Web3 Success

A single vulnerability can destroy trust, drain funds, and halt a project’s growth. A smart contract audit looks for exploitable bugs before launch, while the code can still be changed and before user funds are at stake.

Rain Infotech, reviews contracts line by line and gives your team a written report of every finding, with its severity and a recommended fix.

Speak to a Specialist

Audited Projects See 30–50% Higher User Trust and TVL Growth

Security transparency increases early user adoption and larger liquidity deposits.

Gas Optimizations Improve Transaction Efficiency by 15–25%

Audits identify gas-heavy code paths and optimize smart contracts, saving users and platforms significant transaction fees.

Audit-Ready Projects Unlock Easier Access to Funding and Partnerships

VCs, DAOs, and ecosystems increasingly require proof of third-party smart contract audits before backing or integrating new projects.

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Innovation Stack

Our Smart Contracts Audit Capabilities

From DeFi lending protocols to NFT marketplaces and DAO treasuries, we audit smart contracts with rigorous manual inspection, advanced automation, and real-world exploit simulations.

Solidity & Vyper Smart Contract Audits

In-depth audits for contracts written in Solidity (EVM-compatible chains) or Vyper (Ethereum L2s, advanced DeFi platforms).

DeFi Protocol Audit Expertise

We specialize in complex DeFi systems, AMMs, lending/borrowing, staking farms, yield optimizers, launchpads, and decentralized insurance pools.

NFT Smart Contract Security Audits

Secure ERC721 token/1155 contracts, lazy minting logic, royalty splits, marketplace integrations, and metadata protection.

DAO Governance Smart Contract Review

Audit token voting, multi-signature treasuries, governance modules (like Compound’s Governor Bravo), and snapshot-based AI decision-making.

Multichain & Layer-2 Audit Support

Audit contracts across Ethereum, Polygon, BNB Chain, Arbitrum, Optimism, Avalanche, Base, and other EVM-compatible chains.

Proxy & Upgradeable Contract Security

Audit UUPS, Transparent and Beacon proxy patterns, checking upgrade paths, storage layout and access control for risks to contract logic or state.

Integration with CI/CD Pipelines

We help projects integrate static analysis tools into their GitHub Actions or GitLab pipelines, supporting secure continuous delivery.

Formal Verification Consulting (Optional Add-On)

For high-value contracts (like stablecoins or large DAOs), we advise on formal methods like SMT solvers, symbolic execution, and formal proofs.

How It Works

Our Well-Organized Approach to Smart Contracts Audit

Our audit process is designed to find vulnerabilities, recommend fixes and give your team a clear record of every finding and its re-verification.

  • 01

    Scope Definition & Code Intake

    We begin by understanding your project’s functionality, business logic, and deployment plans. You share the contract repo, test cases, and documentation.

  • 02

    Manual & Automated Audit Layer

    We manually inspect each contract line-by-line and run the code through automated tools like Slither, MythX, and Hardhat plugins to catch known exploits.

  • 03

    Threat Modeling & Attack Simulation

    Simulate possible attack vectors, including reentrancy, flash loan, logic errors, front-running, and improper oracle handling, based on your contract’s purpose.

  • 04

    Issue Categorization & Detailed Reporting

    We categorize issues by severity (Critical, High, Medium, Low, Informational) and provide code references, risk descriptions, and remediation suggestions.

  • 05

    Developer Fix Review & Re-Audit

    After your team implements the fixes, we re-verify the code and confirm whether each vulnerability has been addressed.

  • 06

    Final Report & Public Badge

    We issue a signed, timestamped final audit report with your project name and a summary of findings. On request, we provide an “Audited by Rain Infotech” badge that links to the published report.

What We’ve Built

Success Stories That Speak for Themselves

Discover how we help visionary startups and enterprises bring Blockchain and AI-powered platforms to life, solve complex challenges across finance, retail, logistics, and more.

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Sectors

Redefining Industries with Blockchain Companies

Custom-built digital solutions tailored to the unique demands of every industry. We help businesses overcome complex challenges with blockchain development companies.

 

Explore Industry

Healthcare

Enhance diagnostics through AI-powered analysis, automate patient engagement with intelligent assistants.

AI Blockchain

Finance

Streamline operations with AI-driven fraud detection, predictive analytics, and algorithmic decision-making.

AI Blockchain

Retail

AI personalizes the shopping experience with product recommendations, demand forecasting, and customer segmentation.

AI Blockchain

Insurance

Accelerate claims processing with AI document analysis and underwriting automation, reduce fraud through smart.

AI Blockchain

Supply Chain

Track goods from origin to destination with transparent, tamper-proof blockchain records.

Blockchain

Government

Build trust and transparency in public systems with blockchain-led recordkeeping, identity verification.

Blockchain

Energy

Enable peer-to-peer energy trading, track carbon credits, and support sustainable initiatives using decentralized.

Blockchain
Tech Stack

Our Smart Contracts Audit​ Tech Stack

We use battle-tested tools and blockchain frameworks to deliver secure, scalable, and future-ready decentralized solutions.

Blockchain Platforms

Build on the most trusted and scalable blockchains in the industry. We support a wide range of networks, from Ethereum and BNB Chain to emerging Layer 1s like Sui and Aptos, tailored to your project’s needs.

Service Included:

Tendermint
Hyperledger Besu
Cosmos SDK
Avalanche
Substrate
Ethereum
Solana
BNB Chain
Polygon
Arbitrum
Optimism
Near
Sui
Aptos

Blockchain Tools

Discover essential tools like Remix, MetaMask, Hardhat, and Etherscan that streamline blockchain development, testing, and deployment. From smart contract debugging to transaction tracking, we utilize the best tools to ensure efficiency, security, and seamless dApp performance.

Service Included:

Rust
Solidity
Move
Ethers.js
Cairo
Web3.js
OpenZeppelin
Truffle
Foundry
Hardhat
Remix
Ganache
Brownie
Vyper

Blockchain Infrastructure

Robust backend infrastructure that guarantees your blockchain app operates seamlessly. From node providers and indexing tools to wallet integrations and decentralized storage, we cover all the necessities.

Service Included:

SubQuery
IPFS
WalletConnect
The Graph
RainbowKit
Infura
Gnosis
Alchemy
QuickNode
Chainstack
MetaMask
Trust Wallet
Keplr
Safe

Blockchain Ecosystem

Improve your product experience with seamless cross-chain capabilities, DEX frameworks, and blockchain explorers. We integrate leading tools such as LayerZero, Uniswap SDK, Blockscout, and custom-built bridges to enhance every interaction.

Service Included:

MoonPay
LayerZero
Uniswap SDK
PancakeSwap
Iquidus Explorer
Bulwark Explorer
Blockscout Explorer
Beacon Explorer
1inch
Pinksale.finance
Pump.fun
Why Rain Infotech?

A technical partner that builds for production, not demos.

Founded in 2015, we combine AI and Blockchain engineering with hands-on technical leadership on every project.

Building Since 2015

Founded in 2015 in Surat, India, we have built web, mobile, blockchain, and AI systems for startups, SMEs, and enterprises.

AI and Blockchain Under One Roof

We build AI systems, blockchain platforms, and solutions that combine them, such as agents that work with smart contracts and on-chain data.

Custom & White-Label Solutions

Build from scratch, or start from a white-label product when a faster launch fits your plans.

Architecture and Security Before Code

We design data flows, integrations, permissions, and failure paths before writing code, so security is part of the first version.

Founder and CTO Involvement

Our technical leadership takes part in solution planning, so architecture decisions are made by people who build.

Transparent Communication

You see progress, open questions, and trade-offs as the project moves, from discovery to launch.

Blogs

Resources & Insights

Explore expert blogs, technical guides, and curated insights to help you build smarter with AI and blockchain development .

 

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Testimonial

What Our Clients Say

Rain Infotech has built Blockchain and AI solutions since 2015, with a focus on security, scalability and reliable delivery.

300+
Coin-Token development
100+
Web3 Mobile-Web Apps Delivered
50+
dApps Built on EVM Chains
30+
Decentralised Web & Mobile Wallet

Just genius. Just pure genius. Fun to work with. On time. Not only was he very accessible but he delivered more than what was committed, I got my work well before time for which I was really satisfied.

Hanson Nguyen
Orlando, United States
Johannes testimonial video
Johannes, Dubai

Their blockchain expertise is unparalleled. They helped us launch our token and build a secure, scalable dApp. The communication throughout the project was excellent.

Mike Rotch
Web3 Innovator
Rainer testimonial video
Rainer, Estonia

Amazing team! They understood our vision perfectly and delivered a cutting-edge AI solution that exceeded our expectations. Highly recommend for complex projects.

Sarah Chen
Tech Startup CEO
Orhan testimonial video
Orhan, Germany

Just genius. Just pure genius. Fun to work with. On time. Not only was he very accessible but he delivered more than what was committed, I got my work well before time for which I was really satisfied.

Hanson Nguyen
Orlando, United States
Mughira testimonial video
Mughira, USA

Their blockchain expertise is unparalleled. They helped us launch our token and build a secure, scalable dApp. The communication throughout the project was excellent.

Mike Rotch
Web3 Innovator
Tine testimonial video
Tine, Philippines

Amazing team! They understood our vision perfectly and delivered a cutting-edge AI solution that exceeded our expectations. Highly recommend for complex projects.

Sarah Chen
Tech Startup CEO
Bright Enabulele testimonial video
Bright Enabulele, USA

Just genius. Just pure genius. Fun to work with. On time. Not only was he very accessible but he delivered more than what was committed, I got my work well before time for which I was really satisfied.

Hanson Nguyen
Orlando, United States
Louis Kelly testimonial video
Louis Kelly, UK

Their blockchain expertise is unparalleled. They helped us launch our token and build a secure, scalable dApp. The communication throughout the project was excellent.

Mike Rotch
Web3 Innovator

Just genius. Just pure genius. Fun to work with. On time. Not only was he very accessible but he delivered more than what was committed, I got my work well before time for which I was really satisfied.

Hanson Nguyen
Orlando, United States
Johannes testimonial video
Johannes, Dubai

Their blockchain expertise is unparalleled. They helped us launch our token and build a secure, scalable dApp. The communication throughout the project was excellent.

Mike Rotch
Web3 Innovator
Rainer testimonial video
Rainer, Estonia

Amazing team! They understood our vision perfectly and delivered a cutting-edge AI solution that exceeded our expectations. Highly recommend for complex projects.

Sarah Chen
Tech Startup CEO
Orhan testimonial video
Orhan, Germany

Just genius. Just pure genius. Fun to work with. On time. Not only was he very accessible but he delivered more than what was committed, I got my work well before time for which I was really satisfied.

Hanson Nguyen
Orlando, United States
Mughira testimonial video
Mughira, USA

Their blockchain expertise is unparalleled. They helped us launch our token and build a secure, scalable dApp. The communication throughout the project was excellent.

Mike Rotch
Web3 Innovator
Tine testimonial video
Tine, Philippines

Amazing team! They understood our vision perfectly and delivered a cutting-edge AI solution that exceeded our expectations. Highly recommend for complex projects.

Sarah Chen
Tech Startup CEO
Bright Enabulele testimonial video
Bright Enabulele, USA

Just genius. Just pure genius. Fun to work with. On time. Not only was he very accessible but he delivered more than what was committed, I got my work well before time for which I was really satisfied.

Hanson Nguyen
Orlando, United States
Louis Kelly testimonial video
Louis Kelly, UK

Their blockchain expertise is unparalleled. They helped us launch our token and build a secure, scalable dApp. The communication throughout the project was excellent.

Mike Rotch
Web3 Innovator
FAQs

FAQs About Smart Contracts Audit

A smart contract audit is a detailed security review of blockchain code to identify vulnerabilities, inefficiencies, and logic errors before deploying to mainnet. We provide smart contract auditing services that review your code for vulnerabilities, logic errors and gas issues before production.

We audit smart contracts written in Solidity, Vyper, and EVM-compatible languages across Ethereum, Polygon, BNB Chain, Arbitrum, Optimism, and more, along with Next.js development project integrations. If you’re looking to audit smart contract code on any of these chains, our team can help.

We audit DeFi protocols (DEXs, staking, lending), DAOs, NFT projects, stablecoins, launchpads, oracles, bridges, and escrow systems. Our smart contract audit consulting covers complex protocols, analysing each contract and how the contracts interact.

A small-to-medium Fintech Smart Contracts project audit takes 5–10 business days. Larger protocols or multi-contract projects may take 2–4 weeks, depending on scope and complexity.

We use tools like Slither, MythX, Echidna, Hardhat plugins, and our own custom checklists, along with full manual review for business logic integrity. Every smart contracts audit is backed by automated tools and expert insight.

Yes. You’ll receive a PDF audit report detailing vulnerabilities, their severity, suggested fixes, and whether they’ve been resolved in the re-audit.

While we don’t rewrite your contracts, we provide clear recommendations for your developers and offer a re-audit after fixes are implemented.

Yes. After the audit, we can provide an “Audited by Rain Infotech” badge that links to the timestamped report for your website or GitHub.