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

✦ New tips daily

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

Explore the tips →
Claude Code Tips View all →
#253

MCP server not available in Claude Code scheduled tasks: how to fix it

The MCP server you use in your terminal doesn't exist for a cloud scheduled task, and the run still says Succeeded. The three places it does load servers from, and which one fits yours.

#252

Claude Code 5-hour limit: gone on Ultra, the weekly limit is your only wall

Ultra, formerly Max 20x, no longer has a 5-hour limit on verified accounts: in Claude Code only the weekly limits stop you. What stops happening (the cutoff, the wrap-up) and why your status line may paint a fake 0%.

#251

Claude Code watermark: it's already in what it writes, and costs no tokens

Claude's watermark is already in the text Claude Code writes on current models, with no extra tokens and no price change. Where it lands (little in code, more in commits, PRs and docs) and what doesn't remove it.

#250

Run multiple Claude Code sessions in Desktop: Claude tells you which did what

Multiple Claude Code sessions open and no idea which one is doing what. Desktop puts two side by side with Option+click, pops others into their own window, and lets Claude tell you which one did what.

Gravitas

Get only what matters

If I have nothing worth saying, you won't hear from me. When I do, you'll be the first to know. 7,000+ people already trust this.

Are you a professional Web developer?
No

Unsubscribe at any time.