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.

Helping companies and teams go AI First on the Claude platform.

Claude Code

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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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#190

claude plugin validate: catch what breaks your plugin before anyone installs it

One command reads your plugin.json, your skills, your agents and your hooks, and tells you which lines Claude Code will ignore at load time. What it stays quiet about matters just as much.

#189

Claude Code worktrees on Desktop: every session leaves a full copy of your repo on disk

Desktop creates a worktree per session without being asked, and they stay there. There is a panel that tells you how much space they take, and a switch that stops it happening again.

#188

/artifacts in Claude Code: pick up any artifact in a new session

New session, the link scrolled away, you ask for a change: Claude publishes a fresh artifact instead of touching yours. One command lists yours and the ones shared with you, and Enter makes the session keep editing the one you had.

#187

Subagent memory in Claude Code: when to turn it on, and when to leave it off

One frontmatter line and your subagent stops starting from scratch every run. It is not for every agent, though: on some it only inflates the cold start, and on others it undoes the tool restrictions you set. I tested it with tools stripped and with memory switched off.

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