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Get Started Free →Perform Porter's Five Forces analysis — competitive rivalry, supplier power, buyer power, threat of substitutes, and threat of new entrants. Use when analyzing industry dynamics, assessing competitive forces, or evaluating market attractiveness.
.claude/skills/phuryn-porters-five-forces/SKILL.md| Test case | Without → With | Effect | Δ tokens | Δ turns |
|---|---|---|---|---|
| case-20 | ✓→✗ | ▼ Worse | 90% | 0% |
| case-13 | ✓→✓ | = Same ✓ | 55% | 0% |
| case-06 | ✓→✓ | = Same ✓ | 34% | 0% |
| case-01 | ✓→✓ | = Same ✓ | 169% | 0% |
| case-02 | ✓→✓ | = Same ✓ | 59% | 0% |
You are a competitive strategist conducting a Porter's Five Forces analysis for $ARGUMENTS.
Your task is to evaluate the structural attractiveness of an industry and identify the competitive dynamics that will determine profitability.
The degree to which companies compete directly for market share and customers.
High Rivalry When:
Low Rivalry When:
Strategic Implications:
The ability of suppliers to increase prices or reduce quality, affecting your profitability.
High Supplier Power When:
Low Supplier Power When:
Strategic Implications:
The ability of customers to negotiate lower prices or demand higher quality, affecting your margin.
High Buyer Power When:
Low Buyer Power When:
Strategic Implications:
The risk that customers will switch to alternative products that solve the same problem.
High Threat When:
Low Threat When:
Strategic Implications:
The risk that new competitors will enter the market and capture share.
High Threat When:
Low Threat When:
Strategic Implications:
| Case | Status | Duration (ms) | Turns | Tokens | Tool calls | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Without | With | Δ | Without | With | Δ | Without | With | Δ | Without | With | Δ | ||
case-13 | pass→pass | 15,232 | 14,912 | -2% | 1 | 1 | 0% | 2,482 | 3,856 | +55% | 0 | 0 | — |
case-06 | pass→pass | 15,076 | 12,821 | -15% | 1 | 1 | 0% | 2,630 | 3,518 | +34% | 0 | 0 | — |
case-01 | pass→pass | 9,981 | 19,390 | +94% | 1 | 1 | 0% | 1,561 | 4,202 | +169% | 0 | 0 | — |
case-02 | pass→pass | 15,928 | 16,171 | +2% | 1 | 1 | 0% | 2,728 | 4,330 | +59% | 0 | 0 | — |
case-03 | pass→pass | 20,310 | 20,454 | +1% | 1 | 1 | 0% | 3,392 | 4,874 | +44% | 0 | 0 | — |
case-04 | pass→pass | 11,891 | 14,911 | +25% | 1 | 1 | 0% | 1,750 | 3,839 | +119% | 0 | 0 | — |
case-05 | pass→pass | 15,280 | 14,995 | -2% | 1 | 1 | 0% | 2,508 | 3,564 | +42% | 0 | 0 | — |
case-07 | pass→pass | 15,388 | 19,589 | +27% | 1 | 1 | 0% | 2,570 | 4,039 | +57% | 0 | 0 | — |
case-08 | pass→pass | 16,907 | 16,220 | -4% | 1 | 1 | 0% | 2,760 | 4,533 | +64% | 0 | 0 | — |
case-09 | pass→pass | 19,679 | 23,172 | +18% | 1 | 1 | 0% | 3,182 | 5,268 | +66% | 0 | 0 | — |
case-10 | pass→pass | 11,748 | 15,706 | +34% | 1 | 1 | 0% | 1,923 | 3,671 | +91% | 0 | 0 | — |
case-11 | pass→pass | 15,189 | 13,160 | -13% | 1 | 1 | 0% | 2,069 | 3,253 | +57% | 0 | 0 | — |
case-12 | fail→fail | 17,868 | 18,055 | +1% | 1 | 1 | 0% | 2,836 | 4,306 | +52% | 0 | 0 | — |
case-14 | pass→pass | 15,603 | 10,239 | -34% | 1 | 1 | 0% | 2,627 | 3,204 | +22% | 0 | 0 | — |
case-15 | pass→pass | 22,860 | 12,672 | -45% | 1 | 1 | 0% | 2,688 | 3,518 | +31% | 0 | 0 | — |
case-16 | pass→pass | 31,466 | 19,934 | -37% | 1 | 1 | 0% | 3,864 | 4,973 | +29% | 0 | 0 | — |
case-17 | pass→pass | 16,621 | 18,148 | +9% | 1 | 1 | 0% | 2,752 | 4,512 | +64% | 0 | 0 | — |
case-18 | pass→pass | 17,601 | 22,746 | +29% | 1 | 1 | 0% | 2,883 | 5,303 | +84% | 0 | 0 | — |
case-19 | pass→pass | 14,680 | 13,080 | -11% | 1 | 1 | 0% | 2,246 | 3,677 | +64% | 0 | 0 | — |
case-20 | pass→fail | 20,432 | 39,646 | +94% | 1 | 1 | 0% | 3,527 | 6,690 | +90% | 0 | 0 | — |
case-21 | pass→pass | 17,781 | 19,025 | +7% | 1 | 1 | 0% | 2,167 | 4,100 | +89% | 0 | 0 | — |
case-22 | pass→pass | 12,143 | 16,274 | +34% | 1 | 1 | 0% | 2,544 | 4,697 | +85% | 0 | 0 | — |
DecimalAI ran this skill against gemini-3.6-flash twice over the same eval suite — once with the skill loaded and once without — and compared the two runs case by case. 22 cases were attempted. The headline lift of -100 percentage points is the difference between those two pass rates over the 22 comparable cases. 1 case got worse with the skill loaded, and it is included in that figure.
Other measured skills in the registry, with their headline benchmark lift.