Creator

Mark Fershteyn

@mark · Founder, MasteringAI

Contributions

Writing

Humanizer

Strips the words and rhythms that make readers spot AI writing — the giveaway vocabulary, the em dash pile-ups, the endless rule of three — and tells you what it changed and why.

Strategy

Grill Me

Interrogates your plan the way a skeptical investor, customer, or board member would — hardest question first, no flattery, and an honest list of what you still can't answer.

Strategy

Council

Convenes four advisors with different jobs — operator, skeptic, customer, and closer — argues your decision out between them, then hands you the call and the strongest objection to it.

Productivity

Business Context

Interviews you about your business, then writes the context file your AI reads before every task. Run this one first — everything else gets better because of it.

Research

Company Research

Researches any company into a one-page pre-meeting briefing — what they do, recent news, competition, talking points, and the questions that make you sound sharp.

Presentations

Deck Builder

Turns a document into a slide outline where every headline is a claim — read just the headlines and the argument still holds — plus speaker notes in your voice.

Research

Doc Digest

Turns a long document into one page you can act on — ranked by consequence, with page numbers for anything you'd need to cite, and honesty about which pages you still need to read yourself.

Productivity

Inbox Triage

Sorts your unread email into archive / needs you / waiting on them, with replies already drafted. Clears an inbox to three things that actually matter.

Writing

LinkedIn Post

Turns one real thing from your week into a LinkedIn post with a hook that stops the scroll — three structurally different drafts, in your voice, with zero AI-isms.

Research

Meeting Prep

Builds a one-page prep sheet for any meeting on your calendar — what it's for, what you want out of it, the two things to say, and the one thing not to forget.

Spreadsheets

Spreadsheet Cleanup

Cleans a messy export — dates, currencies, duplicate names, stray whitespace — into a file you can actually pivot, with every single change listed so you can defend it.

Writing

Voice Profile

Reads things you've actually written, works out how you write, and pins it down in a brand-voice file — so everything drafted afterwards sounds like you, not like AI.

Productivity

Weekly Review

Closes your week in fifteen minutes — what moved, what stalled, what you promised, and the three things that matter next week. The Monday version of you will be grateful.