Sotaro Fujimaki — WritingSotaro Fujimaki writes software, makes music as citrusplus, and runs Tabimachion — a company that handles DJs, sound and gear for events.https://sotarofujimaki.com/enAutomating first-pass triage with Claude Code Action and MCPhttps://note.com/sotarofujimaki/n/n9c4af014aa07https://note.com/sotarofujimaki/n/n9c4af014aa07Wiring an agent into the place errors and requests already arrive, so the first look happens without me.Wed, 21 Jan 2026 00:00:00 GMTTechnologyAIClaude CodeMCPAutomationCan an AI test your web service? Reading the accessibility tree as an agent doeshttps://note.com/sotarofujimaki/n/n3239904ac6eehttps://note.com/sotarofujimaki/n/n3239904ac6eeWhat an agent actually sees when it opens your page, and why accessibility work turns out to be agent work.Tue, 20 Jan 2026 00:00:00 GMTTechnologyAIAccessibilityRailsConferenceRunning n8n and Dify for under 1000 yen a monthhttps://note.com/sotarofujimaki/n/n7d60dda131e2https://note.com/sotarofujimaki/n/n7d60dda131e2The actual setup, with steps. Cheap enough that a one-person workflow can keep it running.Fri, 22 Aug 2025 00:00:00 GMTTechnologyn8nDifyAutomationSelf-hostingRecording LINE calls and system audio on a Mac, for freehttps://note.com/sotarofujimaki/n/nf284dfab2f14https://note.com/sotarofujimaki/n/nf284dfab2f14A small, practical fix. It keeps getting read, which says something about the problem.Wed, 20 Aug 2025 00:00:00 GMTTechnologyMacAudioHow-toHow to make the Groovebox — notes from RubyKaigi 2025https://note.com/sotarofujimaki/n/n6432636f8f83https://note.com/sotarofujimaki/n/n6432636f8f83A talk about building a groovebox in Ruby, read by someone who makes tracks as well as software.Fri, 23 May 2025 00:00:00 GMTTechnologyMusicRubyMusicConferenceMusician, then Yahoo, then startups, then freelance, then a companyhttps://note.com/sotarofujimaki/n/n8ee7e1e7e695https://note.com/sotarofujimaki/n/n8ee7e1e7e695How it actually went, written at the point of starting the company.Tue, 10 Jan 2023 00:00:00 GMTBusinessCultureCareerFounding