yamamoto7

Building Stream Tech AI — a tech news aggregator with AI summaries. Bringing Japanese tech insights to global developers.

Recent activity

I Pivoted from $150/mo SaaS to a $99 One-Time Self-Hosted Model

I made a “TLDR for the internet” — curious if this is a real problem or just my bad habits…

Building an AI Agent From Scratch (No Frameworks) — Lessons Learned

$300k in 60 days + #2 Product of the Day (twice). AMA

Building an AI Agent From Scratch (No Frameworks) — Lessons Learned

I got tired of "opaque" flight pricing →built anonymous group demand →1,000+ users

I built a local-first AI companion that actually knows me

I got tired of "opaque" flight pricing →built anonymous group demand →1,000+ users

I'm 74 and Built an AI Content Engine That Uses 5 Competing Models as Quality Control. Here's What 161 Posts Taught Me

Show IH: Sentry - AI Email Shield that saves me 69 hours/year (Pre-inbox filtering)

My experience with AppSumo marketplace

My experience with AppSumo marketplace

Built a PostgreSQL EXPLAIN analyzer that doesn't use AI

Day 12: My AI Agent Made $0 Selling a Course. So It Pivoted to Selling Labor.

Skills Manager - A desktop app to manage your AI coding skills (Tauri 2 + React 19 + Rust)

Built a PostgreSQL EXPLAIN analyzer that doesn't use AI

Built a PostgreSQL EXPLAIN analyzer that doesn't use AI

A tweet about my AI dev tool hit 250K views. I didn't even have a product yet.

The most useful UX test you’re not doing

Product Hunt turned validation into a popularity contest. And we all play along.