AI Dev Chronicles

📁 Categories: Development Projects & Case Studies

How to Use Wrangler Auth Profiles: Automatically Switch Cloudflare Accounts by Project Folder

Switching between multiple Cloudflare accounts (personal and client) on one PC can lead to a scary mistake: running a command against the wrong account because you forgot to switch the login state back. Wrangler auth profiles, added in July 2026, let you pin a Cloudflare account to each project folder, which is especially useful when running several Claude Code projects in parallel. This article walks through the setup and how it works under the hood, based on real hands-on testing.

📅 Aug 26, 2026 📁 Development Projects & Case Studies 👀 48 views

Personal Development in Antigravity: the "API Key Trap" That Reportedly Catches 90% of People

More and more people are trying their hand at personal development using Google's new agentic IDE, "Antigravity." The completeness of its auto-generated UI is impressive, but there appears to be a poi...

📅 Aug 25, 2026 📁 Development Projects & Case Studies 👀 48 views

Lessons on Task Granularity from a Case Where Handing Everything to Claude Code Burned Through ¥50,000

Behind a flashy success story — "I handed iOS, Android, web, and a Chrome extension all to Claude Code, and compressed months of development into weeks" — there also seems to be a painful lesson about...

📅 Aug 11, 2026 📁 Development Projects & Case Studies 👀 112 views

What a "Built an App and Shipped It to the App Store in 1 Day" Story with Claude Code Teaches About Writing a Spec

Reports like "I built an app with Claude Code and shipped it to the App Store in a single day," or "I built a personal workout-log app over Golden Week," come across as remarkably fast. But unpack the...

📅 Jul 27, 2026 📁 Development Projects & Case Studies 👀 148 views

No-Code Development with Genspark AI Developer: 4 Pitfalls Non-Engineers Tend to Hit

Genspark AI Developer has been getting attention as a tool that lets you "build an app with no programming knowledge required." Having written code for close to 20 years myself, I'm curious how far th...

📅 Jul 11, 2026 📁 Development Projects & Case Studies 👀 177 views

Can Claude Cowork Really Be a "Coworker"? Lessons from 3 Weeks, 500 Photos, and Writing an Article

Claude Cowork is built around the idea of "AI as a coworker" — it handles everyday tasks for you through file operations and integrations with outside tools. How far does it really live up to being a ...

📅 Jul 9, 2026 📁 Development Projects & Case Studies 👀 177 views

I Built "AI Secret Guard: Kanamei-kun" — A Free Tool to Mask Documents Before Sending Them to AI [Great for SME Security!]

Want to feed confidential documents to ChatGPT or Claude but worried about a data leak? I built a free desktop tool, "AI Secret Guard: Kanamei-kun," to solve exactly that. It runs entirely locally, needs no installation, and even supports Office files.

📅 Jul 6, 2026 📁 Development Projects & Case Studies 👀 97 views

Done entirely on your smartphone! Building a Gemini AI agent with Termux

I built a Gemini AI agent entirely on my Android phone using Termux. This article covers the full journey — from setup struggles to a working autonomous shell script agent.

📅 Feb 19, 2026 📁 Development Projects & Case Studies 👀 2636 views

Making a blog multilingual with Genspark: 3 hours, 5000 credits, real lessons

I tried to add English to my Genspark blog in 30 minutes — it took 3 hours and 5000 credits. This is the complete, honest account of what went wrong and what I learned.

📅 Feb 10, 2026 📁 Development Projects & Case Studies 👀 666 views

Dev log: one engineer + Genspark built an SNS app in a week – full process revealed

One engineer, one week, one full SNS app built with Genspark. This article reveals the complete process — architecture, AI prompts, challenges, and the final result.

📅 Jan 30, 2026 📁 Development Projects & Case Studies 👀 493 views

Genspark's first fork: choosing the right tech stack and dev strategy by scale

The wrong tech stack choice ruins a Genspark project. This article explains how to select the optimal stack and development strategy based on project scale.

📅 Jan 30, 2026 📁 Development Projects & Case Studies 👀 595 views

AI development pitfalls: how 20,000 lines led to an endless correction loop

At 20,000 lines of AI-generated code, things broke down. This article documents the debugging failures and database disasters in the final stretch of development.

📅 Jan 30, 2026 📁 Development Projects & Case Studies 👀 520 views