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Business Idea Pressure-Test

Runs a new business, product, or side-project idea through a 9-dimension serial-founder filter and outputs a Build / Sleep on it / Pass viability brief.

UtilitiesIntermediate★ 894⑂ 77AI score 9/10Last updated: Nov 5, 2026

What it does

Turns a vague idea into a structured viability brief instead of cheerleading.

  • Captures the idea plus the "why now", and stops to ask clarifying questions if it's too vague to score.
  • Scores nine dimensions — problem, audience, wedge, monetization, moat, portfolio fit, distribution, energy fit, opportunity cost — with ✅ / 🟡 / ❌ / ❓ verdicts.
  • Refuses hopes as evidence, applies an "Opposite Test" to differentiation claims, and only counts present-tense competitive threats.
  • Offers deep research when 2+ dimensions are unknown and checks .com availability for candidate names.
  • Produces a brief with a decisive verdict, build sketch, and an "angle to steal" section for Passes — then archives every brief with a searchable INDEX.md.

Who it's for

  • Founders, indie hackers, and makers with a steady stream of ideas
  • Operators juggling several products who need to decide between launching new vs. extending existing
  • Anyone who wants honest pushback rather than validation

Examples

  1. "Should I build an invoicing SaaS for freelance designers?" → scored table, domain check, and a reasoned Pass.
  2. "Pressure test this idea" with a link to an earlier chat → prior context loaded, unknowns flagged ❓, research offered before any verdict.
  3. A rejected idea still yields value through the "angle to steal for existing properties" section, archived for a later revisit.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/coreyhaines31/makerskills/HEAD/skills/business-brainstorm/SKILL.md

What I want: (describe your task here)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on AI Skill Mart.
Copy the skills/business-brainstorm folder from the GitHub repo coreyhaines31/makerskills into my ~/.claude/skills/business-brainstorm/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/coreyhaines31/makerskills.git /tmp/makerskills && mkdir -p ~/.claude/skills && cp -r /tmp/makerskills/skills/business-brainstorm ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open your terminal.
  2. Clone the repo: git clone https://github.com/coreyhaines31/makerskills.git /tmp/makerskills
  3. Create the skills folder: mkdir -p ~/.claude/skills
  4. Copy the skill: cp -r /tmp/makerskills/skills/business-brainstorm ~/.claude/skills/
  5. (Optional) Also copy the deep-research and domain skills from the same repo so the research and .com-check steps work fully.
  6. (Optional) Create ~/.config/makerskills/business-brainstorm/portfolio.local.md listing your live businesses, audiences, and partners for sharper portfolio-fit and opportunity-cost scoring.
  7. Restart Claude Code and type /business-brainstorm or "pressure test this idea".
View source on GitHub ↗License: MIT