The Complete Web3 Assessment Platform
750+ expert-crafted questions across 18 blockchain topics. 7 question types from multiple choice to performance analysis.
Custom Assessment Builder
Build tailored assessments that match your exact hiring needs. Mix questions from different topics to create cross-topic assessments that evaluate multiple skills in a single test.
- ✓Cross-Topic Testing
Combine Solidity + Security + Frontend in one assessment
- ✓Difficulty Control
Choose from Fundamentals, Advanced, or Expert questions
- ✓Question Type Selection
Pick specific types: code fix, live coding, security review
18 Web3 Topics
From blockchain fundamentals to advanced DeFi. Each topic includes expert-crafted questions across multiple question types including security reviews.
Blockchain Development
Solana / Rust
Anchor framework, PDAs, CPIs, token programs, and program security
Ethereum / Solidity
Smart contracts, ERC standards, gas optimization, and security patterns
TON / FunC
TON blockchain development, Tact language, and smart contract design
Avalanche
Subnet development, cross-chain messaging, and EVM compatibility
DeFi & Trading
DeFi Fundamentals
AMMs, lending protocols, yield farming, and liquidity management
Perpetuals Trading
Derivatives, margin systems, funding rates, and risk management
Solana Trading
SPL tokens, DEX integration, order books, and trading bots
MEV & Arbitrage
Flashloans, MEV extraction, sandwich attacks, and protection strategies
Web3 Frontend & Backend
Web3 Frontend
Wallet integration, transaction signing, and dApp UX patterns
TypeScript
Type systems, generics, decorators, and enterprise patterns
Node.js
Event loop, streams, clustering, and blockchain node interaction
Python
Web3.py, data analysis, scripting, and blockchain automation
Advanced & Specialized
ZK Proofs
SNARKs, STARKs, Circom, Noir, and privacy-preserving applications
Security Auditing
Vulnerability detection, common exploits, and audit methodologies
Smart Contract Security
Reentrancy, overflow, access control, and defensive patterns
Rust Fundamentals
Ownership, borrowing, lifetimes, and systems programming
Need custom topics?
Enterprise customers can request extended question banks for specific technologies or custom topics not listed above. Our expert team creates questions tailored to your needs.
7 Question Types
Go beyond multiple choice. Test real coding skills with live coding, security reviews, and performance analysis challenges.
Multiple Choice
Quick knowledge checks with single correct answers
Multiple Select
Complex scenarios with multiple valid options
Ordering
Critical sequence understanding (security, gas, null safety)
Code Fix
Find and fix bugs in real blockchain code
Live Coding
Write code from scratch in a VS Code-like editor
Security Review
Identify vulnerabilities in smart contracts
Performance Analysis
Optimize gas usage, compute units, and execution efficiency
Real VS Code Experience
Our Monaco-based code editor provides a professional coding environment with syntax highlighting, multiple file support, and real-time validation.
- ✓ Solidity, Rust, TypeScript, Python support
- ✓ Multiple file editing
- ✓ Test runner with real-time feedback
- ✓ Progressive hints system
// Fix the reentrancy vulnerability
#[program]
pub mod vulnerable_vault {
use anchor_lang::prelude::*;
pub fn withdraw(ctx: Context<Withdraw>) -> Result<()> {
let amount = ctx.accounts.vault.balance;
// 🚨 Bug: state update after transfer
**ctx.accounts.vault.to_account_info()
.try_borrow_mut_lamports()? -= amount;
ctx.accounts.vault.balance = 0; // Too late!
Ok(())
}
}Built for Recruiters
Features designed to streamline your hiring process
Private Invitations
Generate one-time invitation links for candidates. Track who completed what and when.
Interview Mode
Toggle between candidate and recruiter view during live interviews. See hints and correct answers.
Analytics Dashboard
Compare candidates, track scores by topic, and identify strengths/weaknesses.
Built-in Anti-Cheat
Ensure assessment integrity with our comprehensive proctoring features.
Ready to assess real Web3 skills?
Start with our pre-built assessments or build your own.