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Codeminer42’s Engineering Blog

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Category: Posts

My First Two Weeks as an Agentic Engineer

My First Two Weeks as an Agentic Engineer

Moisés Carvalhoby Moisés CarvalhoMay 19, 2026May 19, 2026

There’s a version of this post where I tell you AI made me 10x more productive, everything clicked on the first try, and I’m now …

AI TIP: Plan Mode into PRD/ERD as Session Handoffs Plan Heavy with Claude

AI TIP: Plan Mode into PRD/ERD as Session Handoffs

Plan Heavy with Claude

Antonio Paulinoby Antonio PaulinoMay 13, 2026May 13, 2026

Plan Heavy with Claude: Plan Mode, DDD, and PRD/ERD as Session Handoffs If you’ve used Claude Code on anything bigger than a weekend project, you’ve …

How to configure Claude Code for any language A short guide to giving Claude Code the tooling it needs (LSPs, MCPs, language skills, auto mode) so it can self-correct.

How to configure Claude Code for any language

A short guide to giving Claude Code the tooling it needs (LSPs, MCPs, language skills, auto mode) so it can self-correct.

João Victor Voglerby João Victor VoglerMay 8, 2026

I mostly work with TypeScript and GDScript, but lately Claude Code has been pulling towards new horizons with Elixir and Rust projects, which I’d never …

Privacy on Rails Pragmatically complying with data protection laws

Privacy on Rails

Pragmatically complying with data protection laws

Talysson Oliveiraby Talysson OliveiraApril 30, 2026

On a calm and peaceful day, you’re working on your project, combobulating, discombobulating… then this email shows up in the contact inbox: From: notthatdhh@example.com To: …

Kamal and 1Password: A Safer Deploy Secret Flow Safer deploy-time secrets for any containerized app

Kamal and 1Password: A Safer Deploy Secret Flow

Safer deploy-time secrets for any containerized app

Alexandre Camilloby Alexandre CamilloApril 29, 2026

The best part of Kamal is that it makes deployment feel smaller. Less ceremony, less platform overhead and less "let’s book infra time next week.” …

Opus 4.7 vs GLM 5.1: is mixing models worth it?

Opus 4.7 vs GLM 5.1: is mixing models worth it?

Edy Silvaby Edy SilvaApril 29, 2026April 29, 2026

A couple of months ago, I compared Opus vs GLM by having both of them do a task for me. It’s not that surprising that …

Brainstorming – The skill that changed Claude for me How I plan projects using Claude Code and the plugin Superpowers

Brainstorming – The skill that changed Claude for me

How I plan projects using Claude Code and the plugin Superpowers

João Malheirosby João MalheirosApril 27, 2026April 29, 2026

How brainstorming improved the way I work with Claude Code, and why you should try it The solo-dev project challenge Every developer has had a …

Stop Reading AI Code. Start Measuring It. (A Rails Playbook.)

Stop Reading AI Code. Start Measuring It. (A Rails Playbook.)

Paulo Tarsoby Paulo TarsoApril 23, 2026April 23, 2026

So I was scrolling through Twitter the other day — half-reading, not really looking for anything — and this tweet from Uncle Bob caught my …

Jujutsu (JJ): An Alternative to Git? Jujutsu proposes to be simpler yet more powerful than Git. But is it worth switching? Let's find out.

Jujutsu (JJ): An Alternative to Git?

Jujutsu proposes to be simpler yet more powerful than Git. But is it worth switching? Let's find out.

Iasmim Cristinaby Iasmim CristinaApril 16, 2026

We’ve already spent a lot of time using Git… But another tool is trying to offer enough advantages to justify making the switch. Let’s dig …

Your AI Skills Setup Is Probably Wrong

Your AI Skills Setup Is Probably Wrong

Edy Silvaby Edy SilvaApril 9, 2026April 18, 2026

I ran 51 multi-turn evals across 4 configurations and read Claude Code’s source. Skills and CLAUDE.md are both just prompt. The difference is whether the prompt reaches the model.

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