The article addresses common questions related to building Ethereum decentralized applications (dApps) with integrated Web3 monitoring, focusing on connectivity, contract deployment, and troubleshooting issues that arise when using tools such as Metamask and Truffle. It explains how to establish network connections for dApps and manage the interplay between local test networks and Ethereum clients like Metamask, which injects Web3 objects into the global scope. The post guides users on deploying contracts to different networks by modifying configuration files, retrieving smart contract addresses from deployment outputs and JSON artifacts, and resolving common errors such as incorrect nonces and recipient address mismatches. Additionally, it highlights the role of Moesif Browser JS SDK in capturing events via XMLHttpRequest and Web3 layers, and how to handle duplicated event data. The article concludes by emphasizing Moesif's capabilities in API analytics and monitoring for various platforms and protocols, serving as an essential tool for developers in debugging and gaining insights into their applications.