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Technical guides for builders

The failure you can't see, measured, with the fix and the prompt.

Seven guides written from real projects in production. Each chapter explains the problem for a programmer and gives you ready-made prompts so your AI can apply the fix.

Every chapter follows the same path

Symptom, cause, how to check, fix, and the prompt. No loose theory: everything was run and measured before it went into the text.

  1. 1

    Symptom

    What you see when it goes wrong, in the log or on screen.

  2. 2

    Cause

    The technical why, so you understand instead of just copying.

  3. 3

    Check

    The command that confirms the problem in a minute.

  4. 4

    Prompt

    Text ready to paste into Claude, ChatGPT or Gemini to apply the fix.

Real example: a secret with a trailing newline
# same text, two commands
$ echo "my-secret" | wc -c
12   # includes the trailing \n
$ printf '%s' "my-secret" | wc -c
11   # the secret only

Same text, two ways to store it. The deploy says success on both; only one works.

The guides

Each guide is a single PDF with code and checklists.

Ebook cover: Programming with Claude Code in a Small Business

Programming with Claude Code in a Small Business

What worked in a real small-business operation

US$ 37 one-time payment

Ebook cover: AEO in Practice

AEO in Practice

Get ChatGPT, Perplexity and Google to cite your site

US$ 37 one-time payment

Coming soon

Build your own ERP from scratch, tested in practice

Every step run and tested, with prompts for your AI.

Coming soon

Subscription billing with RevenueCat

Apple, Google Play and web, from product to webhook, with prompts.

FAQ

Do I need to be a programmer?

The guides are written for people who code or work with people who do. Each chapter explains the concept and gives the command; with the prompts, an AI can apply the step for you.

What format?

PDF, to read on any device and copy the commands.

What if I don't like it?

Purchases are refundable through the payment platform.

Is there a Portuguese version?

Yes. The same guides are in Portuguese on Hotmart.

Is the data real?

Measurements from projects we keep in production. The numbers and terminal output come from executed tests, not invented examples.