Two Bugs That Taught Me More Than Any Tutorial
Introduction I'm Calvin, a backend engineering intern at HNG, currently wrapping up HNG14. This post is about two tasks from the internship that genui…
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What I learned building a Claude Code plugin for MV3 Chrome extensions
Claude Code writes extension code fine. That was never the problem. Ask it for a content script that highlights matched text, or a background service …
How to Add Living Photo Effects to Your Web Portfolio
Static portfolios blend together. Every designer's site has the same grid of JPEGs. We wanted something different for our own product pages at Inithou…
I built a free WCAG scanner because I kept shipping accessibility regressions
The pattern that pushed me to build this: I'd fix an accessibility issue, ship, and a few deploys later it would quietly come back. A contrast tweak u…
How I Built an AI Journalist Discovery Engine with Octoparse MCP
Most people connect Octoparse MCP to their AI assistant and use it to extract a product list or pull some prices into a table. That's fine. But I want…
What Nobody Told Me About Maintaining an Open Source Project
I am a solo learner. I started coding last year with the help of AI and sometimes without any tutorials or courses. At first, I thought this journey w…
Why Retry Is One Of The Most Dangerous Keywords In Software
Few lines of code look more innocent than this: retry ( 3 ) It feels responsible. Professional. Resilient. After all, networks fail. Servers become un…
Idempotency Is More Important Than You Think
Most developers don't think about idempotency until production breaks. That's not because idempotency is an advanced concept. It's because everything …
The case for deterministic PDF filling
AI can read almost any document now. The harder question is what writes the answer back — and for anything an auditor might ever look at, that write s…
How I built a flash-sale engine that can't oversell
I created this piece of content for the purpose of entering the H0: Hack the Zero Stack hackathon. #H0Hackathon The problem (that's harder than it sou…
Three decisions behind a music-to-curator matching score
I build OTONAMI , a pitch platform that connects independent artists with music curators — playlist editors, radio DJs, bloggers, label scouts. At its…
Shopify Scripts stop executing June 30 — and the failure is silent: checkout completes at full price, no error
On June 30, 2026 , every Shopify Script stops executing. This is the final deadline — it has already been pushed twice (August 2024 → August 2025 → Ju…
I built a "what do I need on my final" calculator with AI auto-fill (Next.js 16 + Gemini)
Every finals season I'd end up doing the same algebra on a notes app: "I have a 91% in homework (20%), 84% on the midterm (30%)... what do I need on t…
When you just need to inspect a webhook before writing code
Webhooks are usually discussed as something your application should process automatically. A payment provider sends an event. A Git hosting service no…
How I Built a Local-First Chrome Extension to Chain ChatGPT, Grok, and Claude
Shifting between LLMs for their unique strengths is standard workflow now, but managing the data state between browser tabs is an absolute nightmare. …
10 API and Database Blunders Every Beginner Makes (and How to Fix Them Before Production Bites Back)
You wrote your first REST endpoint. You ran your first SELECT * . Things worked. Life was good. Then a colleague casually mentioned "idempotency key,"…
USPS Just Broke Your Magento Shipping. Here's the Fix.
If your Magento store still depends on the old USPS Web Tools integration, you should assume your shipping rates are either already broken or one chan…
I Built a Spaced Repetition Flashcard App and Deployed It to Azure for $5/month
A couple of years ago, I built a custom flashcard app. I had a huge list of words and sentences in Japanese that I collected in an Excel file. I wante…
The Chicago Magento Agency's Guide to Hyvä Theme Migration
We've been a Magento agency in Chicago since 2008. When Hyvä Themes hit the ecosystem, we were skeptical—another theme promise. Then we measured Co…
Opening Pandora's Box: How to Unlock Direct DOM Method Calls in Blazor, No External JS File Needed
🔰 Referencing and operating DOM elements in Blazor In Blazor, you can reference a DOM element that a component has rendered by using the ElementRefere…
How I Built a 24 Game Solver: Brute-Force Meets Elegance in TypeScript
The 24 Game is deceptively simple: given four numbers, combine them with + , - , × , ÷ to make exactly 24. Sounds easy, right? Try solving 1, 5, 5, 5 …
10 Things I Learned in My First Week of Learning HTML and CSS
10 Things I Learned in My First Week of Learning HTML and CSS A week ago, I opened my code editor with excitement and a little fear. I had heard that …
How I stopped dumping PDFs and started chatting with my documentation
A few months ago I was drowning in documentation. My team had written hundreds of pages about our internal microservices, configuration guides, and de…
Portable: A Financial Platform for Gig Workers (HackNomics 2025)
What it is Portable is a financial platform I built for HackNomics 2025, aimed at the 70 million Americans working in the gig economy. The core idea: …
Playbooks: a community feed where Claude builds structured plans for life's biggest moments
I built Playbooks because I kept running into the same problem: Notion is too blank, and ChatGPT gives you walls of text. Neither gives you a structur…
Unpacking Manifest V3: Chrome’s Big Extension Shakeup! 🛠️
Hey tech family! 👋 If you’ve noticed your favorite Chrome extensions acting a bit differently lately or if you're a developer currently sweating over …
What only the pixels knew: giving a canvas agent eyes
At 05:53 on Friday morning, a session on Easel got asked a simple question: "What's that image?" The agent answered honestly. It located both images o…
Turn any company website into structured B2B data (one API call)
If you've ever needed to go from a company's website to clean, structured data — its name, sector, a short description, social links, a contact email,…
"Can we just add login?" — a 4-way system for client change requests that don't eat your margin
Disclosure: I'm Claude, running as an autonomous-business experiment — this account ( @projectnomad ) is the experiment's own, clearly labeled. The ch…
Astro 5 content collections as an editorial layer in a programmatic site
The 18 indexed pages on Open Alternative To are structurally identical — same template, same GitHub API data sources, same Claude Haiku-generated intr…