Access every tool I ship, plus publish and sell your own products alongside the Product with Attitude community.
LinkSwap for backlink swaps. Vault for AI workflows and prompts. StackShelf for product discovery. Every tool built for the Product with Attitude community, accessible via Premium Membership.
Read the full article on Substack → The Tools I've Built (and What's Coming Next)
2-page PDF: Claude Cowork Skills file structure, SKILL.md frontmatter, trigger formula, 5 advanced patterns, troubleshooting. Print-ready for builders.
Everything you need to build Claude Cowork Skills on a single print-ready 2-page PDF. File structure, SKILL.md frontmatter, the trigger formula, five advanced patterns, and a troubleshooting table.
Built from months of daily usage, 12+ guides, and 14K-subscriber feedback.
Read the full cheat sheet on Substack → Claude Cowork Skills - Cheat Sheet (2026)
If you're vibecoding with Cursor, Claude Code, or Perplexity Computer, it's worth knowing where to deploy.
Four deployment platforms cover 90% of what builders ship in 2026. Each one solves a different problem.
Picking the wrong one wastes time. Picking the right one takes five minutes.
Read the full guide on Substack → Where to Deploy in 2026: Netlify, Vercel, Railway, Supabase
Tested Perplexity guides from Product with Attitude. Computer workflows, Comet use cases, credit-saving tips, and AIO optimization. Real use, not theory.
Published: 2026-02-20 | By Karo Zieminski
I wrote my first Perplexity article in October 2025. Since then, Perplexity has shipped Comet, Computer, Comet Plus for publishers, Personal Computer, mobile apps, and become a tool I reach for daily. This hub collects every tested guide I've published — Computer workflows, Comet use cases, credit-saving tips, and AIO optimization. Real use, not theory.
A trust-based system for building backlinks together. No spam, no SEO tricks, no admin headaches.
Published: 2026-03-19 | By Karo Zieminski
I've been staring at this idea for months. Substack runs on trust — what could we build with that trust to help each other grow? After digging through another SEO rabbit hole, it finally clicked. Backlinks. Not the spammy kind. Curated partnerships between writers who trust each other's work.
Claude vs ChatGPT vs Gemini at 1M tokens. Context windows, context rot, and what this means for us in real workflows.
Published: 2026-03-16 | By Karo Zieminski
The news about Anthropic unlocking 1 million tokens landed at #1 on Hacker News with over 1,100 points and 485 comments. If Claude is part of your workflow, the new 1 million token context window is a big deal. But the interesting part isn't just the size — it's what Anthropic did around it: pricing, extended thinking integration, and how it compares to ChatGPT and Gemini in real workflows.
Learn how to save credits in Perplexity Computer, avoid costly loops, track usage, and use the tool for the workflows that actually justify the burn.
Published: 2026-03-13 | By Karo Zieminski
Perplexity Computer is one of the most impressive AI products I’ve tested this year. It is also one of the easiest ways to spend a lot of money. Long-time readers know I’m not here to hype shiny tools, but to learn how to use them well. I push them to their limits and report what I find. That’s exactly what I’ve been doing with Perplexity Computer since launch day, building everything from infographics and automations to a new tool for this community that drops next week. *Hi, I’m Karo!
What works, what breaks, and how to make Claude Cowork genuinely useful in 2026.
Published: 2026-03-10 | By Karo Zieminski
Nine days. That's how long I spent breaking Claude Cowork before writing a single word of this guide. I’ve seen enough of shallow tutorials that simply rephrase the official docs to know I wanted to do something different. So I rebuilt some of my workflows from scratch, tracked what failed, measured what saved time, and mapped 56 practical tips into the resource I wish existed when I started.
Build with Attitude #5: How to product-think when AI builds at lightning speed
Published: 2026-03-05 | By Karo Zieminski
The typical vibe-coded tool starts with a business idea. This one started with rage. A professor on Reddit had built an elaborate trap for students: fake citations, trick questions, prompt injection. The post radiated smugness. The comments cheered. And somewhere in the thread, the quiet part went unsaid: this person spent more time on surveillance than on teaching. read that post and felt an urge to fix this. > *We’re educators, not cops.
Every Claude guide I've tested and published: Code workflows, Cowork setups, Skills tutorials, CLAUDE.md files. Real prompts, real failures, nothing theoretical.
Published: 2026-02-21 | By Karo Zieminski
Last updated: March 2026 Tested guides. Real prompts. Documented failures. This is everything I’ve published about Claude on Product with Attitude — organized so you can find what you need and skip what you don’t. Claude is also the #1 AI app on Apple’s U.S. App Store right now, which means a lot of people are about to need these guides. **👉 New to Claude? Start with the Chat vs Cowork vs Code section right below.