Skill UI

Mastery of advanced system design patterns, including Event Sourcing, CQRS, and Event-Driven Architecture (EDA). This skill covers designing event stores, building read/write projections, orchestrating sagas, and managing eventual consistency. It is ideal for building complex microservices that require guaranteed audit trails, historical state querying (temporal queries), and robust handling of business workflows with compensating actions.

A comprehensive utility designed to monitor, analyze, and predict blockchain gas costs across multiple major chains (e.g., Ethereum, Polygon, Arbitrum). It fetches real-time pricing, estimates transaction costs in both ETH and USD, and identifies the optimal time windows for executing DeFi or NFT transactions, ensuring maximum cost efficiency.

This skill guides the mastery of smart contract security best practices for Solidity. It is essential for writing robust, secure, and efficient contracts, auditing existing code for common vulnerabilities (such as reentrancy, overflow, and access control issues), and implementing secure DeFi protocols. It focuses on preventing common attack vectors while optimizing gas usage.

Scans FunC-based TON smart contracts for boolean, Jetton, and gas handling vulnerabilities, reporting critical issues with file references and offering remediation guidance for auditors and secure dApp launches.

Master advanced testing strategies for smart contracts using industry-leading frameworks like Hardhat and Foundry. This skill covers unit testing, integration testing, gas optimization analysis, fuzzing for edge cases, and simulating real-world mainnet interactions via forking. Ideal for ensuring the security and reliability of decentralized applications (DApps).

A comprehensive guide for developers to diagnose and fix common blockchain RPC errors when utilizing QuickNode endpoints. Covers issues such as 'Nonce Too Low', 'Insufficient Funds', 'Gas Estimation Failed', and 'Rate Limited' errors, providing concrete code fixes using ethers.js or viem.

This detailed workflow guides developers through essential Ethereum Virtual Machine (EVM) transaction processes using QuickNode infrastructure. It covers core functionalities such as initiating ETH transfers, calling smart contract write functions, setting up real-time event listeners via WebSocket, and accurately estimating gas costs. It is ideal for building robust decentralized applications (dApps) and blockchain backend services.