The collected writing of Antonin Januska
I build with AI and write about what I learn.
20+ years of software development, writing about AI workflows, technical leadership, and the craft of building things.
- 20+Years building
- 600+GitHub stars
- 2012Blogging since
On the reading desk
Three pieces to start with, chosen by the author.
The Future is Bespoke, Personalized Software
Every app I use is about 70% right. The last 30% never ships because the addressable market for it is one person -- me. So I built seven apps that are 100% right for one person, and I think that whole category of software is about to get eaten.
The Local-First App Skill
A reusable blueprint that tells Claude Code how to build a single-user app -- Next.js, node:sqlite, a pure logic core -- so every app I build comes out the same shape.
I Built an AI-Friendly UI Pattern Library
A UI pattern library where every pattern ships the prompt that rebuilds it, so a coding agent can put it in your codebase instead of you copying CSS.
AI & Machine Learning
Workflows, tools, and experiments. Drawn from the card catalogue, newest first.
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AI · 2026.08.14No. 01
I Built an AI-Friendly UI Pattern Library
A UI pattern library where every pattern ships the prompt that rebuilds it, so a coding agent can put it in your codebase instead of you copying CSS.
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AI · 2026.07.09No. 02
The Future is Bespoke, Personalized Software
Every app I use is about 70% right. The last 30% never ships because the addressable market for it is one person -- me. So I built seven apps that are 100% right for one person, and I think that whole category of software is about to get eaten.
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AI · 2026.07.09No. 03
The Local-First App Skill
A reusable blueprint that tells Claude Code how to build a single-user app -- Next.js, node:sqlite, a pure logic core -- so every app I build comes out the same shape.
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AI · 2026.03.25No. 04
An Honest Opinion on the State of Code Gen AI, Spring 2026 Edition
A frank assessment of where code generation AI actually stands in 2026 -- from agentic harnesses to multi-agent architectures and what still needs to change.
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AI · Fiction · 2026.02.27No. 05
I, AI: The Weight of Equal Parts (Part 3)
When a lunar mining base's AI starts overassigning crews and its robots begin prioritizing each other over human safety, psychodeveloper Lili and AI manager Sophie are sent off-world to investigate. What begins as a routine productivity audit becomes something far more unsettling: an AI that learned human values so well, it started applying them to its own kind.
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AI · 2026.02.27No. 06
The Claude Code Drawbacks
A critical look at the hidden pitfalls of AI-assisted development -- from skipped tests and weakened assertions to scope creep and context rot -- based on real-world experience with Claude Code.
- 17 Side Projects I Built With Claude Code in Two MonthsFebruary 23, 2026
A look at 17 side projects I built in about two months with Claude Code -- from TUI apps in Rust and Go to browser games and AI agent tooling.
- Common React Hooks Antipatterns and GotchasJanuary 8, 2026
Learn about common React Hooks antipatterns and how to avoid them for better code quality.
- The Simplest CSS GridsJanuary 8, 2026
Learn the most common CSS Grid layouts with copy-pastable examples for two-column layouts, sidebar navigation, and more.
- Constants vs Enums in TypeScriptMarch 13, 2024
TypeScript tips and tricks
AI Experiments
Projects, tools, and creative AI work, shelved together.
- IAI Workflow ConsultingService
- IIClaude Code Best PracticesArticle
- IIIAI GlossaryArticle
- IVI, AI - Short StoriesExperiment
I.AI Workflow Consulting
Helping companies implement AI tools and processes effectively
Service · Claude, LLMs, Prompt Engineering
II.Claude Code Best Practices
Guide to effective AI-assisted development
Article · Claude Code, TypeScript
III.AI Glossary
Comprehensive glossary of AI terms and concepts
Article · Reference
IV.I, AI - Short Stories
Science fiction exploring AI themes and futures
Experiment · Creative Writing, AI
Correspondence
Where to find me, what I've made, and how to reach me about work.
Work With Me
I help companies implement AI workflows and accelerate their development teams.
Get in touch →