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build-in-publicopvs-marketplaceai-agents

I shipped a skill with six methods you're not allowed to call — on purpose

My media skill lists generateImage. Calling it fails every time — and that's correct. A guidance-only skill teaches the prompt craft; a peer skill makes the call. The v1.5.1 story.

Martin Shein
Martin Shein
Jul 20, 2026 · 5 min read
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cold emailoutboundsales

58% of my replies come from emails I almost didn't send

Most cold outreach pours everything into the first email and treats follow-ups as a chore. The data says the opposite: 58% of positive replies land on follow-ups two through four. Here's how I rebuilt outbound-engine around the ladder.

Martin Shein
Martin Shein
Jul 20, 2026 · 5 min read
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cold emailAI agentsdeliverability

My AI agent sent 200 cold emails perfectly. I never saw the replies.

One of my AI agents launched a cold-email campaign that sent perfectly and told me nothing — because it went out without a webhook. Here's the silent failure, the hard rule I made, and three more lessons my deployed agents taught me, all shipped in @di-atomic/smartlead v1.9.0.

Martin Shein
Martin Shein
Jul 20, 2026 · 5 min read
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section-designeropvs-skillsdesign-systems

My best design skill isn't the one on the marketplace.

How I stole a pattern from my own weekend project and put it back into a public skill. @di-atomic/section-designer v0.3.0 promotes molds/ to a first-class layer, adds two new critique rules, and pre-parses tokens for a 100x speedup.

Martin Shein
Martin Shein
Jul 17, 2026 · 5 min read
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explainer-illustrationsillustrationscontent

Great blog illustrations aren't rendered — they're planned

The missing step between a finished article and good illustrations isn't a better image model — it's a plan. How I use @di-atomic/explainer-illustrations to build a shot list before anything renders.

Martin Shein
Martin Shein
Jul 9, 2026 · 5 min read
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skill-launchstartup-forecastforecasting

My forecaster won't show you a number until it's pictured your startup dead in 24 months

Most startup forecasts start with a hopeful number and bend everything to protect it. @di-atomic/startup-forecast does the opposite: it writes the obituary first, runs a pre-mortem and tarpit scan before any math, reads the idea through four VC lenses, and reports ranges instead of wishful point estimates.

Martin Shein
Martin Shein
Jul 9, 2026 · 5 min read
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compliancenicotinetobacco

Most compliance tools will make the law up. I built one that fails its own build when it tries.

One nicotine SKU into five markets means five rulebooks, each rewritten every 6–12 months. I built a compliance advisor that answers "can we sell this here" with a sourced go/no-go — and fails its own build if a rule ships without a citation.

Martin Shein
Martin Shein
Jul 9, 2026 · 5 min read
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