From bette-think
Assesses Four Fits framework to validate product-market, product-channel, channel-model, and model-market alignments before scaling. Diagnoses blockers and suggests fixes.
npx claudepluginhub breethomas/bette-think --plugin bette-thinkThis skill uses the workspace's default tool permissions.
**Before you scale, all four fits must work. If one is broken, scaling fails.**
Guides product-market fit validation and measurement using Sean Ellis 40% test, vitamin vs painkiller framework, retention metrics, and organic growth signals before scaling.
Measures product-market fit with Sean Ellis surveys (40% very disappointed rule), Superhuman engine, retention curves, and scaling indicators. For validating products, diagnosing retention, and planning growth.
Guides product-market fit (PMF) via measurement frameworks, retention analysis, Sean Ellis surveys, segment strategies, pre/post-PMF navigation. Activates on PMF, retention mentions.
Share bugs, ideas, or general feedback.
Before you scale, all four fits must work. If one is broken, scaling fails.
Most companies scale too early. They have product-market fit and think they're ready. They're not. You need all four:
One broken fit = don't scale yet. Fix it first.
Philosophy: "All four fits must align for $100M+ growth. Scaling with misaligned fits burns cash." - Brian Balfour
When this skill is invoked, start with:
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FOUR FITS ASSESSMENT
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Before you scale, all four fits must work.
What do you want to do?
1. Full assessment
→ Evaluate all four fits
2. Diagnose growth blocker
→ Find which fit is broken
3. Pre-scale validation
→ Checklist before spending
4. Specific market segment
→ Analyze fit for new segment
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/four-fits
Examples:
/four-fits - Full assessment of current state/four-fits --validate - Pre-scale validation checklist/four-fits --diagnose - Identify which fit is blocking growth/four-fits --market "SMB SaaS" - Specify market explicitlyGathers context about your product:
Assesses each fit independently:
Identifies misalignments:
Returns detailed assessment with:
Provides validation activities to de-risk each fit
The question: Do customers want this?
Validation signals:
Anti-patterns:
See: /pmf-survey for validation
The question: Can we reach customers efficiently through this channel?
Validation signals:
Anti-patterns:
Channel types:
The question: Does our business model support acquisition costs?
Validation signals:
Anti-patterns:
See: /ai-cost-check for cost modeling
The question: Can we monetize this market profitably?
Validation signals:
Anti-patterns:
/four-fits --diagnose
Helps identify WHICH fit is blocking growth:
Symptoms → Diagnosis:
Low retention, high churn
→ Market-Product fit issue
→ Run: /pmf-survey
High CAC, can't scale acquisition → Product-Channel fit issue → Consider: Different channel or improve activation
Unprofitable customer acquisition
→ Channel-Model fit issue
→ Run: /ai-cost-check or raise prices
Can't expand, limited TAM → Model-Market fit issue → Consider: Different market segment or business model
/pmf-survey - Validate Market-Product fit specifically/growth-loops - Design Product-Channel fit via loops/lno-prioritize - Prioritize work to fix misaligned fits/ai-cost-check - Validate Channel-Model economicsFull frameworks:
frameworks/growth/four-fits.md - Brian Balfour's complete frameworkframeworks/growth/growth-loops.md - Elena Verna on sustainable growthframeworks/measurement/pmf-survey.md - Validate Market-Product fitFramework: Four Fits (Brian Balfour) Best for: Validating sustainable scaling readiness Key insight: "All four fits must align for $100M+ growth. Scaling with misaligned fits burns cash." Remember: Fix fits in order - Market-Product first, then Product-Channel, then Channel-Model, then Model-Market. Don't skip ahead.