Blog

AI news in my own words, case studies spiced with sarcasm.

Get notified on new posts

No spam. Only when I write something worth reading.

Day with AIApril 17, 2026· 5 min read

Day with AI: 58 Commits, Fitness App Scaffold from Scratch, and Mac Cron Cleanup.

Complete foundation for a new fitness app — Next.js 16, Supabase, magic-link auth, E2E tests. In parallel: data model with 62 exercises and 76 recipes, plus legacy cron cleanup. 58 commits in a day.

#den-s-ai#fitness-app#supabase#infrastruktura

Day with AIApril 16, 2026· 4 min read

Day with AI: Fitness App on Supabase, Video Pipeline in 45 Minutes, and Cron Cleanup.

Fitness tracker migration from Convex to Supabase, complete video production pipeline as standalone repo, detailed training program PRD, and consolidation of 14 cron jobs. 28 commits, 15 sessions.

#den-s-ai#fitness-app#video-pipeline#infrastruktura

Day with AIApril 11, 2026· 4 min read

Day with AI: CRM Automation from Scratch, PRD in One Hour, and 15 Commits in a Single Day.

Full CRM workflow in n8n — meetings, client research, credential management. Plus client project PRD and CV redesign. 15 commits, 8 sessions.

#den-s-ai#crm#automatizace#n8n

Day with AIApril 5, 2026· 5 min read

Day with AI: Client App Rebrand, 74 Tests, 19 Server Service Fixes, and Mobile Tweaks — in One Afternoon.

Full client app rebrand, CV upload with AI parsing, chatbot anti-jailbreak protection, 74 automated tests, server infrastructure fixes, and mobile responsivity. 6 commits, 3 sessions.

#den-s-ai#klientsky-projekt#infrastruktura#web-development

Day with AIApril 4, 2026· 5 min read

Day with AI: 10 Bugs from the Gym, Website Redesign, and Server Infrastructure Migration.

First real gym test of the fitness app revealed 10 bugs. Plus personal site redesign, cron migration to VPS, and dashboard overhaul. 3 commits, 4 sessions, 3× deploy.

#den-s-ai#fitness-app#web-development#infrastruktura

Day with AIApril 3, 2026· 5 min read

Day with AI: Fitness App, Security Course, and a Static Site — Three Projects in One Day.

Complete fitness app rebuild, interactive security course with quizzes, and a legacy site fix. 4 commits, 6 sessions.

#den-s-ai#fitness-app#security-kurz#web-development

Day with AIApril 2, 2026· 5 min read

Day with AI: PRD for an Autonomous System, Broken Python Fix, and the Client Got an Implementation Plan.

Wednesday mix of everything — from autonomous system design through dev tool fixes to process analysis for a client. 6 sessions, zero commits, but lots of writing.

#den-s-ai#automatizace#proces-analyza#devtools

Day with AIApril 1, 2026· 4 min read

Day with AI: 8 Models, a Pile of Receipts, and the Answer to "Which AI Reads Your Invoices Best".

Compared 8 AI models on real invoices and receipts. Plus cold email pipeline and blog automation. 1 commit, 3 sessions.

#den-s-ai#ai-modely#benchmark#automatizace

Day with AIMarch 31, 2026· 6 min read

Day with AI: 24 Commits, New Profiles, AI Filters, and the Whole Platform Looks Like a Million-Dollar Product.

Monday marathon — client platform got new profiles, AI data processing, match quality filters, search redesign and improved UX. 24 commits, 8 sessions.

#den-s-ai#redesign#ux#ai

Day with AIMarch 30, 2026· 5 min read

Day with AI: Glass Cards, Real Data Replacing Fakes, and Auto-Generated Documents. 11 Commits on a Sunday.

Client platform got a premium redesign across all pages, real data replacing mocks, and auto-generated documents. 11 commits, 4 sessions.

#den-s-ai#redesign#dashboard#contracts

Day with AIMarch 29, 2026· 5 min read

Day with AI: Full Client Platform Redesign — Design System, Animations, Live Matching, and Editable Profile. In 11 Hours.

Two marathon sessions on a client project. New design system, Remotion animations, 2000 seed records, live matching, demo flow, and an editable profile with visibility controls. 14 commits in one day.

#den-s-ai#redesign#remotion#monorepo

Day with AIMarch 27, 2026· 5 min read

Day with AI: Premium Redesign, New Services Page, and AI Blog Images. In 6 Hours.

Rewrote the services page from scratch — 5 services, bento grid, two CTAs. Plus a premium redesign for a client project and AI-generated images for every blog post.

#den-s-ai#personalweb#redesign#vercel

Day with AIMarch 26, 2026· 6 min read

Day with AI: AI Course Knowledge Base, 10 Automations, and Docs for Normal People. 34 Hours of Work.

Built a knowledge base for a 67-lesson AI image and video course, reorganized n8n automations, and wrote documentation for people without a tech background. Mammoth session.

#den-s-ai#ai-content#knowledge-base#n8n

Day with AIMarch 25, 2026· 6 min read

Day with AI: 150 AI Agents, New System Architecture, and a Full Client AI Project in One Day.

Reinstalled the entire work system, deployed 150+ specialized AI agents, launched a lead gen pipeline, and built a client AI platform POC from scratch. 30 hours in one session.

#den-s-ai#claude-code#agents#productivity

Day with AIMarch 24, 2026· 5 min read

Day with AI: Cold Email Pipeline from Scratch. CLI Tool, Daily Briefing, and 1-Click Draft Approval.

Built a unified lead pipeline CLI, smart daily briefing with Clockify and pipeline data, and a system for previewing cold emails directly in the inbox with approve, edit in Notion, or reject buttons.

#den-s-ai#lead-generation#cold-email#n8n

Day with AIMarch 23, 2026· 5 min read

Day with AI: One Dashboard for the Entire Business. 8 Crons, Real-Time Overview, Zero Manual Work.

Complete automation system rebuild. New AxisHub dashboard, 3 new crons, schedule reorganization. Everything in one place, ntfy just sends a ping.

#den-s-ai#productivity#ai#vercel

Day with AIMarch 19, 2026· 4 min read

Day with AI: Full Lead Gen System in a Day. 7 Workflows, CRM, Cold Emails.

7 n8n automations, Notion CRM, company scraping, AI enrichment and cold email pipeline. Plus frontend migration to Netlify. A Wednesday that normally takes a month.

#den-s-ai#productivity#ai#n8n

Day with AIMarch 18, 2026· 3 min read

Day with AI: YouTube Scrape Skill and Second Mac Setup. A Calm Wednesday.

Built a YouTube scrape skill with yt-dlp and a setup script for a second Mac. 5 hours of work in 41 minutes.

#den-s-ai#productivity#ai#youtube

Day with AIMarch 17, 2026· 3 min read

Day with AI: Slack Is Dead, ntfy Lives. Plus Client Analysis Update.

Migrated 5 n8n workflows from Slack to ntfy.sh, built custom Swift notifications for Mac, and updated a client analysis. 2h 15min instead of 17 minutes.

#den-s-ai#productivity#ai#ntfy

Day with AIMarch 16, 2026· 4 min read

Day with AI: 20 Hours of Work in 3. A Monday Worth Having.

5 projects, 12 AI sessions — from website redesign to client analysis to video pipeline. A Monday that would normally take an entire week.

#den-s-ai#productivity#ai#personalweb

AutomationMarch 14, 2026· 8 min read

I Built an AI News Digest from 21 Sources. It Costs Me $0/Month.

21 RSS feeds, OpenAI classification, deduplication with 14-day expiry and a macOS LaunchAgent running it 5x daily. No SaaS, no subscription.

#n8n#openai#rss#automatizace

Case StudyMarch 10, 2026· 10 min read

I Built a Google Chat Bot That Understands 14 Commands. Runs on Vercel for Pennies.

Google Chat webhook + OpenAI classification + GitHub Issues + Google Calendar/Tasks/Drive/Contacts. One bot replacing 5 apps.

#google-chat#openai#vercel#github

Case StudyMarch 5, 2026· 9 min read

I Built a Fitness Tracker with Next.js and Convex. No App Was Good Enough.

Workout logger, macro tracking, progress graphs and training plan in one app. 9 Convex tables, TypeScript everywhere. Why I didn't just use Excel.

#next.js#convex#typescript#fitness