Custonomy Wallet Provider

What is this?

An Ethereum provider built to connect decentralized applications (DApps) with the Web3asy widget, enabling users to easily connect and interact with blockchain applications through a standardized integration. The provider is designed to be added to client web apps, acting as a bridge between the DApp and the Web3asy widget.

Disclaimer: This project was proposed, owned, and shipped by Custonomy, and I worked on it as part of the engineering team.

About my role

• Developed an Ethereum provider packaged as an npm module for client-facing DApp integration
• Built a demo application to test and debug provider behavior in real usage scenarios
• Wrote and maintained technical documentation to make onboarding and integration straightforward for external developers

Technologies I used

• Language: React, TypeScript
• Web3: Web3.js
• Documentation: GitBook

Features

• Allow developers to enable Web3 connectivity in their applications through the Web3asy widget
• Provide a reusable Ethereum provider that works across different web applications
• Allow end users to connect their wallets and interact with DApps through a unified widget experience
• Provide clear technical documentation to support onboarding and setup

Challenges & how I approached them

1. Building my first npm package for external developers

• Designed the provider as a reusable npm package that could work across different client applications
• Paid close attention to API design, stability, and compatibility, knowing it would be used by professional developers
• Ensured the package met internal quality standards to protect the company’s reputation

2. Learning Web3 development while delivering a production-ready solution

• Learned core Web3 and Ethereum provider concepts during development, as this was my first Web3-focused project
• Followed industry references and examples to align with standard provider patterns
• Regularly checked in for feedback and validation to ensure correct implementation

So, what was the outcome?

• Delivered a production-ready Ethereum provider used to integrate the Web3asy widget into client DApps
• Published my first npm package, supported by professional, public-facing documentation
• Helped ensure smooth adoption by external developers through clear integration guides

Things I learned

• How to design and ship a reusable npm package for external developers
• Practical experience building an Ethereum provider and understanding Web3 integration patterns
• The importance of developer experience and documentation when shipping SDK-style tools