Notes from a solo builder shipping AI tools for authors.
Join the workshop newsletter. You’ll get The Solo Builder’s AI Stack 2026 — a 5-email series on the AI workflow I use to ship side-tools after my day job — as a welcome gift, then the regular Substack newsletter (a few build notes a week).
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3 products live · 1 building in public · 10 posts in the last 30 days · last shipped Jun 8
The workshop
Currently building
Drippery
Live MVP
Email drip series for indie writers. Plain HTML, no bloat.
Join beta →
Archive Concierge
Live
An AI librarian for your blog archive. Surfaces the right posts for the right reader.
Try it →
Subhook
Public beta
Inbound email orchestration for writers who outgrew Zapier.
Try the beta →
Reel Pipeline
Launching July 2026 · Gumroad
Turn your Substack or Medium article into a 9:16 AI reel. Local-first, your stack, your GPU.
Get on the list →
Latest writing
All notes
Jun 8, 2026 · SubstackCaptions That Read Along, One Word at a Time
ASS karaoke, a fixed mobile anchor, and the one-line bug that highlighted the wrong word.
Jun 4, 2026 · Medium3 Things That Bit Me Before My Claude Code Memory Setup Worked
A recursive hook, a laptop-cooking embedder, and the frontier model quietly eating my API credits.
Jun 4, 2026 · SubstackWhy I Shipped the Free TTS I Don't Use
ElevenLabs sounds better. Kokoro ships better. The default isn't always the one you'd pick.
About
One person, a workshop of products, building in public.
I'm Daniel Rusnok — a software engineer for the last decade. The last few months I've been shipping side-tools after my day job. Drippery and Archive Concierge are live; Subhook is in public beta; Reel Pipeline (my first paid kit, coming to Gumroad) is building in public. Each one started because I saw a problem and wanted to solve it my own way.
Workshop stack: Next.js 16, Drizzle, Postgres, Tailwind v4, deployed on Fly.io. Every product here is built AI-first — Claude Code with custom skills, hooks, and mem0 do the heavy lifting, and the Anthropic SDK powers what the apps need at runtime.
Like what you see? Join the workshop notes.
Subscribe and I’ll send you The Solo Builder’s AI Stack 2026 — a 5-email series on Claude Code skills, mem0, the memory split with Notion, and the tools I dropped — as a welcome gift, then the weekly Substack newsletter.
By subscribing you opt in to both the welcome series and the ongoing newsletter. Unsubscribe anytime.