Claude Code

Here’s a summary of how I currently use Claude Code . I previously introduced a Claude Code book in [2026-01-16-1] , but this time I’ll write about my own workflow. Development Environment I work on my MacBook’s built-in display. I’m not really someone who uses external monitors. I display the macOS built-in Terminal.app in full screen and use tmux . I don’t split tmux windows—instead, I switch between tabs (windows). I haven’t (yet?) switched to Ghostty or iTerm2 . ...

Last month I changed jobs and returned to Rails development after a long time. With a 6-year gap and only one month available for learning, I needed to efficiently grasp Rails 8’s new features and refresh my memory of existing ones. So I decided to learn by building a working app together with Claude Code while referencing the Rails Guides. I temporarily subscribed to Claude Code’s Max plan at USD 100/mo. ...

For casual information gathering, I’ve been running a serverless application called masutaka-feed since 2020. Post GitHub private feeds1 to Mastodon Star and follow notifications are also sent to Pushover Post Hatena Bookmark favorites feeds2 to Mastodon These are pieces of information that aren’t worth subscribing to seriously with a feed reader, but I want to keep them in my field of view. ※ Mastodon posts are made to the private account @[email protected] Previous Architecture Diagram Previously, I used IFTTT’s RSS Feed Integration to detect new items and call Lambda functions via API Gateway. ...