Evangelistcast is a series of projects for web learning, made in 2025 using AI agents. It focuses on teaching developers to build with OpenAI in the agentic days of the web.

Marcio reflects on what it means to code with AI agents, sharing a Codex GPT-5.1 pairing session and the cultural shifts tied to that workflow.
Marcio S Galli

Experiment captures with Puppeteer the difference between lazy and eager images in a web renderer, highlighting visual impact and performance tradeoffs.
Marcio S Galli

Demo shows how to control the webcam directly in the browser with HTML5, Canvas, and WebRTC, plus video and the open CamCanvas code.
Marcio S Galli