Skill UI

A comprehensive guide for building production-grade Web3 applications, smart contracts, and decentralized systems. Covers expertise in DeFi protocols, NFT platforms, DAOs, cross-chain interoperability, and advanced smart contract security patterns (Solidity, Rust). Ideal for developers building complex, resilient decentralized finance (DeFi) and enterprise-grade blockchain solutions.

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).

This guide addresses the critical difference between standard Node.js SHA3-256 and the Keccak-256 hash function required by Ethereum. Using the wrong hash function can silently corrupt calculated function selectors, event topics, storage slots, and derived addresses. It provides best practices and code examples for using dedicated libraries (like ethers, viem, web3.js) to ensure correct, Ethereum-compliant hashing in JavaScript and TypeScript environments.

A comprehensive guide to setting up a full-cycle local Web3 development workflow. This skill utilizes Alchemy as the RPC provider, Hardhat for local unit testing, and integrates Mainnet forking and Sepolia testnet deployment. It covers initializing the project, configuring smart contract interactions, and implementing advanced testing patterns.

A comprehensive guide for migrating code from deprecated libraries like alchemy-web3 to the modern alchemy-sdk (v3). This resource details handling breaking changes, understanding new API namespaces (core, nft, ws), and updating web3 interactions to ensure seamless blockchain functionality.

A comprehensive workflow for building NFT collection explorers and interacting with smart contracts using Alchemy's robust APIs. It covers fetching detailed NFT metadata (including OpenSea data and floor price), batch processing metadata, reading standard contract states (like ERC-20 balances), and verifying NFT ownership. Ideal for developing advanced Web3 applications, marketplaces, and data dashboards.

This guide provides minimal, working examples using the Alchemy SDK for foundational Web3 development. Learn essential blockchain interactions, including checking ETH balances, fetching NFT collections for a wallet, retrieving ERC-20 token balances, and querying the latest block information. Ideal for developers starting out or testing their blockchain infrastructure.

A utility designed for robust blockchain interactions using the Alchemy API. It implements CU-aware throttling based on Compute Unit costs, manages concurrent requests, and includes advanced retry logic for handling 429 Too Many Requests errors. Ideal for optimizing high-volume, reliable Web3 applications that must adhere to strict API rate limits and usage budgets.

A comprehensive guide and implementation for setting up Continuous Integration and Continuous Deployment (CI/CD) pipelines for dApps powered by Alchemy. It utilizes GitHub Actions to automate critical Web3 workflows, including running Hardhat tests against a mainnet fork, verifying smart contract integrity, and securely deploying to testnets like Sepolia. Features built-in key exposure scanning for robust security.

A comprehensive guide for diagnosing and fixing common errors encountered when using the Alchemy SDK and Web3 APIs. Covers issues such as authentication failures (401/403), rate limits (429), invalid parameters, RPC failures, and specific NFT/Enhanced API errors. Ideal for developers integrating blockchain functionalities.

Develop a complete, multi-chain wallet portfolio tracker using Alchemy's Enhanced APIs. This workflow aggregates ETH balances, ERC-20 token holdings, NFT assets (ERC-721/1155), and transaction history across major chains (Ethereum, Polygon, Arbitrum, Optimism, Base). Ideal for building sophisticated decentralized applications (dApps) and comprehensive Web3 dashboards.

This integration facilitates the secure deployment of Alchemy-powered decentralized applications (dApps) across major cloud platforms like Vercel and Google Cloud Run. It is designed to ensure that sensitive Alchemy API keys are treated as server-side secrets, preventing client-side exposure. Use this when setting up backend services, RPC proxies, or deploying production-grade Web3 applications requiring secure access to blockchain data.