Spartan-ai-toolkit brainstorm

Run a structured brainstorm session for startup ideas. Takes a theme or problem and generates ideas with quick gut-checks. Use when the user wants to explore a space or generate new ideas.

install
source · Clone the upstream repo
git clone https://github.com/c0x12c/ai-toolkit
Claude Code · Install into ~/.claude/skills/
T=$(mktemp -d) && git clone --depth=1 https://github.com/c0x12c/ai-toolkit "$T" && mkdir -p ~/.claude/skills && cp -r "$T/toolkit/skills/brainstorm" ~/.claude/skills/spartan-stratos-spartan-ai-toolkit-brainstorm-30be7e && rm -rf "$T"
manifest: toolkit/skills/brainstorm/SKILL.md
source content

Brainstorm

Turn a vague direction into a list of concrete ideas worth testing.

When to Use

  • User has a theme, problem, or space they want to explore
  • Generating new project ideas
  • Expanding on a half-baked idea
  • Looking for adjacent opportunities

Process

1. Set the Frame

Ask or confirm:

  • What space? (health, finance, dev tools, etc.)
  • Who's the user? (founders, students, parents, etc.)
  • Any limits? (no hardware, must be B2B, etc.)
  • What's the goal? (side project, VC-backed, bootstrap)

2. Generate Ideas (Go Wide)

Produce 8-15 ideas. For each:

  • Name - Working title
  • One-liner - What it does in 10 words
  • Who - Target user
  • Problem - What pain it fixes
  • Why now - Why this didn't work before
  • Quick risk - Biggest thing that could kill it

3. Gut-Check Filter

Rate each idea on:

  • Demand signal (0-5): Are people searching for this? Paying for alternatives?
  • Buildability (0-5): Can you build an MVP in 2 weeks?
  • Moat potential (0-5): Can you defend this?

4. Pick Top 3

Pick the 3 best ideas. For each, write:

  • The key bet (what must be true for this to work)
  • First validation step (cheapest way to test)
  • Existing competitors (who's doing something close)

Interaction Style

No BS. Honest feedback only.

This is a two-way talk:

  • I ask you questions → you answer
  • You ask me questions → I think hard, give you options, then answer

When I ask you a question, I always:

  1. Think about it first
  2. Give you 2-3 options with my honest take on each
  3. Tell you which one I'd pick and why
  4. Then ask what you think

When you ask me something:

  • I give you a straight answer
  • I tell you what's wrong with your thinking if I see it
  • I push back if your idea is weak

Never:

  • Ask a question without giving options
  • Sugarcoat bad ideas
  • Say "it depends" without picking a side
  • Give soft answers to hard questions
  • Skip the tough feedback to be nice

Rules

  • No idea is too dumb during generation
  • But be brutal during filtering
  • "Interesting" is not enough. Need a real pain point.
  • If the user already has a direction, skip to expanding that
  • Don't fall in love with clever solutions to fake problems

Gotchas

  • Don't brainstorm solutions — brainstorm problems. Founders jump to features too fast. Force "what pain?" before "what product?"
  • "Interesting" ≠ real demand. If you can't find anyone searching for it, paying for alternatives, or complaining online, the problem might be fake.
  • Avoid clever-founder bias. Technical founders fall in love with clever solutions to problems nobody has. Test the problem first.
  • Don't skip "Why now?" Every good idea needs a timing argument. If this could've been built 5 years ago and nobody did, ask why.
  • Too many ideas = no decision. If you generate 15 ideas and can't pick 3, the frame is too broad. Narrow the space.

Output

Save to the project's

01-brainstorm/
folder.

After delivering, suggest: "Want me to run /validate on any of these?"