Newsletter writer keeps voice, audience and Notes skills in one folder that works across Claude and ChatGPT

What they did

They built one skill describing their audience and another describing their business, and give both to Claude whenever they build a new system. For writing, they use a Voice DNA skill, a separate skill for article introductions, a skill for structuring articles and a Draft to Final skill that teaches the AI how they revise. These live as text files in one folder that works in Claude Code, Cowork, ChatGPT and Codex. Because the folder also holds finished articles, their Substack Notes skill can turn parts of an article into standalone Notes without them passing material back and forth. They batch short-form content one day a week.

How it went

They say their drafts come back almost final. They still pick every topic, write the drafts and make the final call on everything published under their name.

Worth knowing

• Part of the post is for paid subscribers, and several workflows run on Amplifiers, a set of tools the author helped build, so mild self-promotion. They rely on AI more for Notes than for articles because they hold articles to a higher standard.
• Price check: Claude: free plan; Pro: US$20/month, or US$17/month on a yearly plan (US$200/year) (checked Nov 1, 2026); ChatGPT: free plan; Go: US$8/month (checked Nov 1, 2026).

Paying for Claude? See cheaper Claude alternatives.

Try it yourself

Paste this into a chatbot, then add your own details underneath.

Read these five pieces I wrote: [paste]. Write a one-page voice guide covering my sentence length, word choices, how I open and close, what I never say, and three before-and-after examples. Then use it to edit this draft without adding new claims: [paste draft].

Original post

See Daria Cupareanu (AI Blew My Mind)'s original post on Substack → (Aug 13, 2026)