Crop images to any ratio. Added a cropping feature to TinyPixy.

Web Development 41min read

Claude Fable 5 and Mythos 5 are here. The tier above Opus is finally in general availability.

Anthropic has unveiled Claude Fable 5 and Mythos 5, Mythos-class models that sit a tier above Opus. An independent rundown of their performance, safety, pricing, and availability, written from a Claude Code user's point of view.

2026-06-10

20min read

Image compression, background removal, and AI upscaling in one Mac app. TinyPixy has been released.

I have released TinyPixy, a Mac app that combines three common image preparation tasks—compression, background removal, and AI upscaling—into a single tool. Processes that previously required separate apps or cloud services can now be completed within one window by switching tabs. Since all processing, including AI upscaling, happens on-device, your images are never sent to external servers. It is available as a $19.99 one-time purchase rather than a subscription, and all features can be tested in the free version.

2026-05-31

Web Development 52min read

Run tens to hundreds of sub-agents at once with Claude Code's Dynamic Workflows

Dynamic Workflows, added to Claude Code as a research preview, is a mechanism where Claude writes orchestration scripts on the fly and coordinates dozens to hundreds of sub-agents in parallel to tackle large tasks. You can start simply by typing "workflow" in the prompt. We will organize the details step-by-step, covering the differences from sub-agents and Skills, specific usage, and the often-overlooked considerations regarding cost.

2026-05-31

Web Development 36min read

Claude Opus 4.8 Released: Towards Long-Term Autonomy and More Sincere Behavior

Introducing Anthropic's new model, Claude Opus 4.8. With improvements in judgment, honesty, and long-term autonomy, the probability of it missing flaws in its own code is now about one-fourth that of the previous generation. Fast mode is 2.5x faster and 3x cheaper, while standard pricing remains unchanged. I have also organized how to leverage it for work from a practical perspective.

2026-05-30

Web Development 11min read

Compress and rename images for websites and blogs in one go! Mac app "TinyPress" has been released.

I have released "TinyPress," a Mac app that allows you to compress, convert, resize, and rename blog images all at once with a single drag and drop. It achieves up to a 97% reduction by converting to WebP and AVIF and operates completely offline.

2026-04-21

Web Development 29min read

Claude Opus 4.7 Released! The Arrival of Effort xhigh and a Glimpse of the Power of Mythos

Anthropic has released Claude Opus 4.7. We summarize the key points of its evolution, from the introduction of the new effort level "xhigh", significant improvements in coding and vision performance, and enhanced instruction following, to mentions of the higher-tier model Mythos Preview.

2026-04-18

30min read

What do you do when you're working in Claude Code and feel like, "I want to take a quick look at or fix this file"?

Launching an IDE is heavy, and `cat` is hard to read without syntax highlighting. By using `bat` when you just want to view files and Neovim when editing is also an option, we will create an environment that runs smoothly alongside Claude Code.

2026-04-14

24min read

Let's grow CLAUDE.md with Anthropic's official claude-md-management plugin

Introducing the official claude-md-management plugin from Anthropic. We have summarized how to evolve CLAUDE.md—which often becomes outdated—using skills to grade the file and commands to incorporate learnings from your sessions.

2026-04-12

17min read

The Story of How Switching Claude Code from Homebrew to Native Installation Made Things More Comfortable

A guide to switching Claude Code from Homebrew to a native installation. Based on the experience of version mismatches when running brew upgrade across multiple Macs, this article covers how to migrate to the native version with automatic updates, how to carry over your settings, and how to configure release channels.

2026-04-03

Web Development 18min read

Let's Achieve "Working While You Sleep" with Claude Code's /schedule — A Thorough Explanation of the Differences with /loop

With the newly added /schedule command in Claude Code, you can automatically run tasks periodically in the cloud. We'll explain in detail how to have it handle PR reviews and documentation updates "while you sleep," including the differences from /loop.

2026-03-25

Web Development 36min read

Claude Sonnet 4.6 Released! Evolution from Sonnet 4.5 and the Power of "Best Cost-Performance" from an Engineer's Perspective

A review of Claude Sonnet 4.6, released on February 17, 2026, from an engineer's perspective. It delivers performance exceeding the previous generation's top-tier model, Opus 4.5, at the Sonnet price point. We explain how to differentiate its use from Opus 4.6 based on benchmark comparisons, the evolution of computer use, and product updates.

2026-02-19

Web Development 39min read

Postgres Best Practices for the AI Agent Era! Leverage "Agent Skills" Released by Supabase

By using "Agent Skills" released by Supabase, you can teach AI coding agents Postgres best practices. We introduce specific measures by priority, such as index design, RLS, and connection management.

2026-02-13