Practical AI, from real builds.
Guides to Claude Skills, Claude Code and Codex, SEO in the age of AI search, and the engineering behind AI features. Written by someone who ships them, with the failures left in.
Claude Skills
What Are Claude Skills? How Agent Skills Work (2026 Guide)
Claude Skills are folders of instructions, scripts and checks that Claude loads when a task needs them. How they work, where they run, which to use.
Claude Skills
How Agent Skills (SKILL.md) work, how to write and install them, and when they beat prompts, projects and MCP.
Claude Skills
SKILL.md Format Explained: Frontmatter, Folder Structure and Examples
SKILL.md field by field: frontmatter rules, extra fields Claude Code accepts and Claude.ai rejects, folder structure, limits and a full example.
Claude Skills
Claude Skills vs MCP vs Plugins vs Subagents: Which One Do You Need?
Skills teach Claude a method, MCP connects it to systems, plugins package both, subagents work apart. A clear comparison with a decision flow.
Claude Skills
How to Install Claude Skills in Claude.ai, Claude Code, Codex, Cursor and Copilot
Install a skill in Claude.ai, Claude Code, the API, Codex, Cursor and Copilot, with the exact folders and menus, plus fixes for missing skills.
Claude Code & Codex
Working with coding agents on real products: handovers, session starts, two agents on one repo, overnight runs.
Claude Code & Codex
The Claude Code Handover: End Every Session With a File the Next One Can Act On
A Claude Code handover is the file a fresh session reads first. The template, the rules behind it, and a ready-to-paste prompt for the next chat.
Claude Code & Codex
Before Claude Code Edits Anything: A Two-Minute Session Checklist
A two-minute preflight before Claude Code edits anything: right repo, branch and clean tree. Plus how to recover work from the wrong branch.
Claude Code & Codex
How to Use Claude Code and Codex Together on One Repository
Run Claude Code and Codex on one repo without collisions: one rulebook, CLAUDE.md vs AGENTS.md, one handover file, clear lanes and a reviewer.
SEO & AI search
Keyword research from evidence, articles that rank, and getting cited by ChatGPT, Claude and Perplexity.
SEO & AI search
Claude for SEO: A Workflow From Keyword Research to a Published Article
Use Claude for SEO without publishing AI slop: keyword research from evidence, one keyword per URL, verified drafts and technical checks.
SEO & AI search
Generative Engine Optimization (GEO): How to Get Cited by ChatGPT, Claude and Perplexity
What research says raises visibility in AI answers, which AI crawlers to allow, what Google says about llms.txt, and how to measure it monthly.
AI engineering
RAG, guardrails, grounding, evaluation and launching AI features, explained with real builds instead of theory.
AI engineering
The AI Builder's Glossary: Agents, Skills, MCP, RAG and Evals in Plain English
The AI field in five themes and 40 terms, in plain English: models, context and RAG, tools and agents, reliability, and shipping AI features.
AI engineering
RAG Explained With a Real Example: The Phrase Bank Behind a Language App
RAG explained through a real pipeline: a phrase bank built from class notes, embeddings, vector search, a grounding check and quality tests.
AI engineering
Prompt Injection Defense in Six Layers, From a Real Language App
No single prompt stops prompt injection. Six stacked layers from a real language app, tested with real calls, and the risk that remains.
Learning with AI
Using AI as a tutor for languages and exams, with methods that measure progress honestly.
LinkedIn & outreach
Posts in a real person's voice, honest analytics and outbound that doesn't burn your domain.
Field notes
Long-form write-ups of the projects behind the skills.
Field notes
Best AI Stack for Building on a Budget
A practical field note from building myberuf with Claude, Codex, ChatGPT, Mistral, Vercel, GitHub, smoke tests, guardrails, and handovers.
Field notes
Usable Privacy in AI
A practical field note on usable privacy, privacy-by-architecture, local LLMs, hybrid privacy filters, and responsible AI-agent workflows.
Field notes
myberuf.com
A myberuf case study about building a German-for-work AI learning product with AI agents, Mistral workflow, Vercel, handovers, and voice automation experiments.
Four skills, free
The handover and session-start routine from the Claude Code articles, plus a caption writer and an exam-prep tutor. Free, so you can see what a skill built from real work looks like.

