Juan Andrés Núñez.

Senior Frontend Engineer specializing in Agentic AI, professional educator and speaker. Where engineering meets humanism.

Juan Andrés Núñez
Focusing on
Building FrontendLeap: teaching how to build the professional Web with GenAI and learning science.
Claude Code

Claude Code: from zero to professional. Tips, tutorials and deep dive guides from an engineer who uses it 12 hours a day.

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#108

Artifacts in Claude Code: your session stops being trapped in the terminal

A 100-line Markdown file doesn't get read, it gets skimmed. Artifacts turns what Claude Code does into a live web page at a private URL your team opens and watches update. It's beta and Team/Enterprise only, but the underlying technique you can use today.

#107

Claude Code usage limits, demystified: the 5-hour window and the weekly cap

I've used it daily for months and never got why it sometimes cut me off mid-afternoon. It isn't one counter: it's three clocks running at once. Here they are, minus the Reddit myths.

#106

/cd in Claude Code: jump to another repo mid-session without losing your context

Switching repos mid-session meant quitting and relaunching, losing your context. /cd moves the session to another folder without restarting, and without rebuilding the prompt cache.

#105

/code-review locally: review your diff before the PR (it's not just the GitHub bot)

Most people think Code Review in Claude Code is the Team/Enterprise GitHub bot. There's also a /code-review that runs in your terminal and reviews your diff before you open the PR, with nothing to install.

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