AntJanusAntonin Januska

Swipe, drag, or use the arrows. Every section on this site is a reel.

  • Antonin Januska · Boulder, Colorado

    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.

    Read the writing Work with me Browse UI patterns →
  • Antonin in a black cap and glasses in front of a graffiti brick wall
  • 20+Years building
    600+GitHub stars
    2012Blogging since
  • Antonin hiking in Colorado with a backpack above a mountain vista

  • 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.

    LatestAI

Start here

Three pieces that explain what this site is about.

All writing →

  • 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.

    AI WorkflowsAI

  • 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.

    AI DevelopmentAI

  • 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 DevelopmentAI

Five reels, one person

Keep scrolling down. The reel moves sideways.

A circuit-board tree illustration
01 / Writing

Digital Garden & Demystifying Tools

Engineering opinions, deep dives, and practical walkthroughs of command-line tools.

  • 17 Side Projects I Built With Claude Code
  • Common React Hooks Antipatterns and Gotchas
  • Demystifying awk

Open the writing →

Abstract navy data blocks
02 / AI

Guides for working with AI tools

Twelve guides on agentic workflows, Claude Code, and what still needs to change.

  • I Built an AI-Friendly UI Pattern Library
  • The Claude Code Drawbacks
  • Using Git Worktrees to Parallelize AI Agents

Open the AI section →

Illustration from the I, AI story series
03 / Fiction

I, AI: short stories

A fictional series about psychodeveloper Lili and AI manager Sophie. Written by hand, without AI.

  • Part 1: Spare Cycles
  • Part 2: Unknowing Crowds
  • Part 3: The Weight of Equal Parts

Read the stories →

Hand-drawn blueprint sketch of a workstation
04 / Built

Things I've built

Open source, 13 side projects built with Claude Code, and a podcast about Final Fantasy.

  • Programmer's Proverbs, 680 stars
  • cc-dash, 25 MCP tools
  • Start TUI in Rust

See the projects →

Blueprint drawing of dials, panels and tiles
05 / Patterns

AI-friendly UI patterns

40 interface patterns from shipped apps, each with the prompt that rebuilds it.

  • Hairline stat strip
  • Guarded control
  • Blast-radius confirm

Browse the library →

AI & Machine Learning

Workflows, tools, and experiments.

View all →

  • 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.

  • 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, 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.

  • 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.

  • All 12 AI guides →

    Workflows, tools, and experiments.

Digital Garden

Engineering, opinions, and deep dives.

View all →

AI Experiments

Projects, tools, and creative AI work.

  • AI Workflow Consulting

    Helping companies implement AI tools and processes effectively

    ServiceClaude · LLMs · Prompt Engineering

  • AI Glossary

    Comprehensive glossary of AI terms and concepts

    Article

  • I, AI - Short Stories

    Science fiction exploring AI themes and futures

    ExperimentCreative Writing · AI

Connect

Projects

Work With Me

I help companies implement AI workflows and accelerate their development teams.

Get in touch →