The 1-Page Marketing Plan as an agent skill — interview me, build the Sheet

I read Allan Dib's The 1-Page Marketing Plan and realized the only durable output of a whole business plan is that one 3×3 grid — nine squares across Before / During / After. So instead of filling it in by hand again, I taught my agent to do it: a skill that interviews you and builds the grid as a formatted Google Sheet you keep.

What made it usable, not just correct:

• Draft-first, not a blank interrogation. The blank page is the barrier — the agent drafts all nine squares from context, then refines them with you.
• Define "the sale" before anything else. For an art project, "conversion" isn't money — it's participation. Guess that wrong and half the plan rots, so the skill pins it down first.
• Plain-language per square. I'm not a marketer; "capture leads" meant nothing to me until the skill explained it inline.
• A dumb-but-real one: the Google Sheets API can't merge cells, and a narrow label column turns long text into unreadable skinny towers. The fix — wide equal columns, phases as full-width colored bands, tall wrapped rows.

I checked first: plenty of "explain the framework" skills exist, but none that builds the actual Sheet. So I built that, and ran it cold on a friend's Biennale walking-photography app ("one walk, one photograph"). It produced a genuinely usable plan in one sitting — here's the actual Sheet it made. My first three layouts were unreadable before the band layout stuck — failures are welcome here.

Reproduce this

Prerequisites: an AI coding agent (Claude Code, Cursor, Codex…) with shell access and a Google Sheets capability — a Google Sheets / Docs MCP tool, or the Sheets API via a library like gspread.

Your agent will need from you: your product in a sentence, and what "a sale / conversion" means for you.

Steps:

1. Install the skill: clone https://github.com/worklore/worklore-skills and copy skills/one-page-marketing-plan-sheet/ into ~/.claude/skills/ (or your agent's skills directory). No skills folder? Point your agent at the raw SKILL.md in that repo.
2. Tell your agent: "make me a 1-page marketing plan."
3. Answer the two assumptions it asks first — the item and the sale — then refine the nine squares it drafts for you. Tell it your real facts as you go: prices, where your customers come from, how many hours a week and how much money you can spend. The plan is only as specific as what you give it.
4. It creates a formatted Google Sheet (title, assumptions, three colored phase bands, the nine filled squares). No Sheets tool available? It emits the same grid as a CSV to import.

Verify: you end with a Google Sheet titled "1-Page Marketing Plan — <your business>", laid out as the 3×3 grid and filled with your own answers. Then read it square by square: each one should name something true about your business, and you should be able to do everything in it with the time and money you have. A square that would fit any business ("post regularly on social media") is a square to refine, not a finished one.