Opensource on Rafael Zago

How I use AI in development (Cursor and Claude)

Wed, 22 Jul 2026 00:00:00 -0300

The question I hear most about day-to-day AI is not “which model do you use?” It is “how do you organize this so it does not turn into a mess?”

I use AI constantly, in code and on this blog. What changed my routine was not a miracle prompt. It was treating the agent like someone who joins the project with no context: if the rule is not in a file, it does not exist. Skills, AGENTS.md, agents with narrow roles, and me reviewing the result. No magic.

Claude Code: from PRD to pull request with agents

Fri, 08 May 2026 00:00:00 -0300

Introduction

I discovered Claude Code a few months ago when our team was struggling to keep code reviews consistent. After six weeks with the tool, we cut average PR time from 4 days to 1 day — and that was only the start.

Claude Code automates a large part of the development workflow. PRDs, TDD, code review, even MCP setup. It is not magic, but it works well enough to change the day-to-day.

TemPy: IoT with Raspberry Pi, Skupper, and Grafana

Thu, 15 Feb 2024 00:00:00 -0300

Description

This project is a proof of concept for an IoT architecture using a Raspberry Pi and a temperature sensor that exposes the temperature data through a REST API. Along with the REST API, there is a cloud integration with any cloud provider using Skupper that enables the data to be visualized in a Grafana dashboard.

Clone the repository and follow the instructions to run the project. https://github.com/rafaelvzago/skupper-tempy

git clone https://github.com/rafaelvzago/skupper-tempy.git

Architecture

Open source career: what it is and how to start

Thu, 07 Dec 2023 00:00:00 -0300

A career in free software — what it is and how to start

Introduction

Free Software is a movement that promotes the freedom to use, study, modify, and distribute software. It rests on four essential freedoms:

The freedom to run the program for any purpose (freedom 0).
The freedom to study how the program works and adapt it to your needs (freedom 1). Access to the source code is a prerequisite for this freedom.
The freedom to redistribute copies so you can help others (freedom 2).
The freedom to improve the program and release your improvements so the whole community benefits (freedom 3). Access to the source code is a prerequisite for this freedom.

Types of free software licenses

There are many free software licenses. The most common ones are GPL, LGPL, MIT, Apache, BSD, and Mozilla. Each has its own traits and constraints, but all of them protect the four essential freedoms of the Free Software movement.

Opensource on Rafael Zago

How I use AI in development (Cursor and Claude)

Claude Code: from PRD to pull request with agents

Introduction

TemPy: IoT with Raspberry Pi, Skupper, and Grafana

Description

Table of Contents

Architecture

Open source career: what it is and how to start

A career in free software — what it is and how to start

Introduction

Types of free software licenses