Is the Business Brainstorm skill free?

Yes. The skill itself is free from coreyhaines31/makerskills. SkillProof publishes the install command and an independent test verdict at no cost.

What is the Business Brainstorm SkillProof Score?

7.6/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 6/10, docs & honesty 3/5.

How do I install Business Brainstorm?

Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.

Can I use Business Brainstorm with Cursor, Copilot, Gemini CLI, Codex or other AI tools?

The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.

Business Brainstorm

Scores a business idea on 9 dimensions and forces a build/sleep/pass call

by coreyhaines31 · coreyhaines31/makerskills

Works with setup

Install — copy the command Download source ↗

Test report

Verdict: Works with setup
Score: 7.6/10
Tested: Jul 17, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Aug 10, 2026 · 0048e89

Pressure-tested one idea — a SaaS that auto-generates changelogs from git commits for indie devs — with and without the skill. The no-skill baseline hedged to "could work, validate first" and never named a killer; the skill's grid forced Monetization and Moat to explicit ❌ with reasons (git-cliff already does this free, GitHub ships it as a feature) and raised opportunity cost, a dimension the baseline never mentioned. The catch is that four of nine dimensions — portfolio fit, distribution, energy fit, opportunity cost — depend on a portfolio.local.md the repo never ships and never documents, so on a clean install the skill's own rubric routes to "run deep-research first" instead of delivering the verdict it advertises. Step 5's "always run /domain" also silently does nothing unless you install the sibling domain skill from the same repo. Real value in the framework, but budget two undocumented manual steps before the headline brief actually lands.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

Installs cleanly 5/5
Triggers reliably 5/5
Output vs. baseline 6/10
Docs & honesty 3/5

What Business Brainstorm does

Runs a new business, product, or side-project idea through a nine-dimension founder filter — problem, audience, wedge, monetization, moat, portfolio fit, distribution, energy fit, opportunity cost — and outputs a viability brief with a build, sleep-on-it, or pass verdict. Triggers on phrasings like "should I build X", "pressure test this idea", or "is X a good business". Archives every brief to ~/.config/makerskills/business-brainstorm/archive/ so past calls stay searchable.

How to install Business Brainstorm

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

Skills live in ~/.claude/skills/ (global) or .claude/skills/ (per-project). Restart Claude Code after installing.

Commands — how to trigger Business Brainstorm

/business-brainstorm Scores a business idea on 9 dimensions and forces a build/sleep/pass call

It also activates on plain-language prompts like these:

Should I build a SaaS that auto-generates changelogs from git commits
Pressure test this side-project idea before I sink a weekend into it
Is this business idea worth building, sleeping on, or passing on entirely

Frequently asked questions

Is the Business Brainstorm skill free?: Yes. The skill itself is free from coreyhaines31/makerskills. SkillProof publishes the install command and an independent test verdict at no cost.
Does Business Brainstorm work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 17, 2026. Verdict: Works with setup. Pressure-tested one idea — a SaaS that auto-generates changelogs from git commits for indie devs — with and without the skill. The no-skill baseline hedged to "could work, validate first" and never named a killer; the skill's grid forced Monetization and Moat to explicit ❌ with reasons (git-cliff already does this free, GitHub ships it as a feature) and raised opportunity cost, a dimension the baseline never mentioned. The catch is that four of nine dimensions — portfolio fit, distribution, energy fit, opportunity cost — depend on a portfolio.local.md the repo never ships and never documents, so on a clean install the skill's own rubric routes to "run deep-research first" instead of delivering the verdict it advertises. Step 5's "always run /domain" also silently does nothing unless you install the sibling domain skill from the same repo. Real value in the framework, but budget two undocumented manual steps before the headline brief actually lands.
What is the Business Brainstorm SkillProof Score?: 7.6/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 6/10, docs & honesty 3/5.
How do I install Business Brainstorm?: Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use Business Brainstorm with Cursor, Copilot, Gemini CLI, Codex or other AI tools?: The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.