I built a fleet of 171 automation jobs to grow my business — and one of them was quietly murdering another one's login session every single night for days before I figured out why.
Here's the arc: I made ¥100k/month as a university student, stacked side jobs up to ¥600k/month, got laid off and went back to zero, then spent six months building an autonomous Claude Code environment that now does ¥1.2M/month in revenue. The Instagram account underpinning that revenue was being killed daily by a script I wrote myself.
Why This Setup Matters
When you're building up revenue as a solo developer, the first wall you hit isn't "not enough hands" — it's "I have no idea what's happening while I sleep."
In my current environment, 171 jobs launch automatically from launchd every day. Posting, liking, following, unfollowing, and DMs across X / Instagram / Threads / TikTok are all automated, and a Bash script called sns-output-watchdog.sh monitors whether each one actually produced output that day, based on artifact logs.
