Zealynx Academy

Build. Audit. Launch.
The Web3 & AI Builder Platform

01Build real systems from scratch. DeFi protocols (Uniswap V2), AI security auditors, autonomous agents. Write every function, pass automated tests.

02Prove it works in the Arenas. Shadow Arena: audit real protocol forks. AI Auditor Arena: benchmark your AI tools against real contests. Get scored. Compete.

03Learn to launch with the Web3 eMBA. Tokenomics, fundraising, governance, go-to-market. Everything technical founders don't know they need.

Start Building Enter Shadow Arena

Built by Zealynx Security, 30+ protocol audits. Free to start.

Why Zealynx Academy exists

You don't watch. You build.

No videos. No slides. You write every function yourself. DeFi protocols, AI security tools, autonomous agents. Guided by starter code and automated tests.

Two arenas to prove your skills.

Shadow Arena: audit real protocol forks from past security contests. AI Auditor Arena: benchmark your AI tools against real Code4rena findings. Both scored, both competitive.

AI meets security meets business.

Build protocols, then audit them. Build AI auditors, then benchmark them. Learn business fundamentals, then launch. Everything connects.

Built by auditors who saw the gap.

After 30+ protocol audits, we kept seeing builders fork code they don't understand. So we built the platform. For builders, aspiring auditors, AI engineers, and founders.

How It Works

From building real systems to proving they work to launching your business.

Protocol Development

Pick a production protocol like Uniswap V2. Instead of forking it and hoping for the best, you build it line by line. Every function. Every design decision. Pass 207 automated tests. Walk away understanding every line of the protocol you want to fork.

Because you can't build on top of something you don't understand.

Start building

Protocol Security

You built it. Now try to break a fork of it. The Shadow Arena gives you a real protocol from a past security contest. Find the vulnerabilities auditors found. Submit findings. Get scored. Then review what you missed and learn why it matters.

Build it, then break it. That's how you truly understand security.

Enter the arena

AI Agents

Build AI security auditors using Claude Code skills. Choose your architecture, detection strategy, and verification approach. Then benchmark your tool against real audit contests in the AI Auditor Arena.

Build AI tools. Prove they work against real data.

Explore AI Agents

Protocol Business

You can code. You can audit. But launching a protocol is a business problem. Tokenomics, treasury, fundraising, governance, go-to-market, legal. The full eMBA built specifically for Web3 founders. Everything you don't know you don't know.

The eMBA nobody teaches. From zero to revenue.

Explore the eMBA

See It in Action

Here is what the experience looks like, step by step.

01CHOOSE

Pick a Protocol.

Each module is a real production protocol. Uniswap V2 and Compound V2 are live. Pick the one you want to master.

Real protocols. Real code. Licensed for forking.

Building Uniswap V2

5 contracts . 16 sections . Available now

Building Uniswap V3

Coming soon

Building Compound V2

18 sections

02BUILD

Write Every Line.

Starter code gives you the scaffolding. Your job: write the function bodies. The swap math, fee calculation, LP token logic. TODO blocks with hints guide you, but the thinking is yours.

Not copy-paste. You think through every function.

// UniswapV2Pair.sol — You write this

function swap(uint amount0Out, uint amount1Out) {

// TODO: Validate outputs > 0

// TODO: Transfer tokens optimistically

// TODO: Fee-adjusted K invariant check

}

03VERIFY

Pass the Tests.

Automated tests verify your implementation. Fee math correct? Reentrancy guard in place? Run the tests, see what passes, fix what fails.

207 tests across 16 sections. Instant feedback.

swap() uses 997/1000 fee mathPASS

K invariant verified after swapPASS

Reentrancy guard presentPASS

Flash loan callback missingFAIL

3/4 passed. Fix the callback and retry.

04SHADOW ARENA

Audit a Real Fork.

You built the protocol. Now review a real fork from a past security contest. Find what auditors found, submit findings, get scored. Learn what you missed.

Build it, then try to break it. That's how you truly understand security.

Shadow Arena #001: Basin6d 23h left

H-01Oracle not updated in shift()+75

M-04No fees enables sandwich DoS+50

FPReentrancy in addLiquidity0

3 findings submitted . 2 TPs . Score: +125

05COMPLETE

Ship Your Fork.

All tests pass. You have a complete, deployable protocol. Deploy to testnet, run Krait security checks, or fork it for your own project. It is yours.

Walk away with a protocol you built, audited, and deeply understand.

Uniswap V2 Path Complete

Built . Tested . Audited

16 sections

14 findings

+500 Lynx

Climb the Ranks

7 ranks. Each one a character with unique stats, strengths, and a story. Build protocols to level up.

Newcomer

Builder

Architect

Sovereign

See all 7 ranks

Built by auditors, for builders

Every lesson, test, and security pattern in the Academy comes from real audit experience. Zealynx Security

Frequently Asked Questions

What is Zealynx Academy?

Zealynx Academy is a free, interactive education platform where you build real DeFi protocols from scratch. Instead of watching tutorials or reading documentation, you write every function yourself, guided by starter code and automated tests. It is built by Zealynx Security, a smart contract audit firm with 30+ protocol audits.

What protocols can I build?

Two modules are live: Uniswap V2 (16 sections, AMM from scratch) and Compound V2 (18 sections, lending protocol from scratch). Each one is a real production protocol, modernized to Solidity 0.8.x. More coming soon.

What is the Shadow Arena?

The Shadow Arena is a competitive audit experience. After building a protocol, you review a real fork from a past public security contest. Each audit has a timed window (2, 4, or 7 days) to find vulnerabilities, submit findings, and get scored against the actual contest results. True Positives earn points. False Positives cost points after the first 3.

What is the eMBA for Web3 Founders?

The eMBA is a structured business program built specifically for technical Web3 founders. It covers tokenomics, treasury management, fundraising, governance, go-to-market strategy, legal considerations, and operations. Everything you need to go from code to a launched protocol business.

Is it really free?

Yes. All Build modules, Shadow Arena challenges, and eMBA lessons are free to access. You earn Lynx points and ranks as you progress. There is no paywall, no premium tier, and no credit card required to start.

Do I need to know Solidity to start?

Basic Solidity knowledge helps. You should understand variables, functions, and mappings. The Academy teaches protocol architecture and design patterns, not Solidity syntax from zero. Platforms like CryptoZombies or Cyfrin Updraft are great starting points if you need Solidity basics first.

Who built this?

Zealynx Academy is built by Zealynx Security, founded by Carlos Vendrell. The team has audited 30+ DeFi protocols for clients including Fair Labs, Novaswap, Golden Grid, Inverter, Mangrove, and more. Every lesson and security pattern comes from real audit experience.

Ready to start building?

Build Uniswap V2 from scratch. Audit a real fork. Learn to launch. Free to start.

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Build. Audit. Launch.The Web3 & AI Builder Platform