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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#218

Claude Code bypass permissions: project settings no longer turn it on

bypassPermissions in a project's .claude/settings.json stopped working in 2.1.257, with no warning: the session starts in Manual and asks before every action. Where it still works, tested.

#217

"Prompt is too long" in Claude Code: when /compact can't fix it

"Prompt is too long" in Claude Code comes in several versions, and some warn you that compacting won't help. What follows the · tells you which one you have.

#216

Claude Code effort level: medium does the same work for a third of xhigh's cost

Anthropic says higher effort pays off when a task hides edge cases. I built three tasks like that and ran Opus 5.5 on them 27 times at medium, high and xhigh: every run passed everything. What changed was the bill.

#215

Claude Code plan mode: your plan is already a .md file, and one setting puts it in your repo

Every plan you approve in plan mode is already a .md file, and Claude rereads it after compaction. The catch is where it lands: ~/.claude/plans, under a random name, mixed in with every other project's.

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