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porters-five-forces

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.

23,904stars2,432forksUpdated 7/17/2026

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About porters-five-forces

This skill performs a Porter's Five Forces analysis to evaluate the structural attractiveness of an industry and identify the competitive dynamics that determine profitability. It solves the problem of assessing market attractiveness in a rigorous, repeatable way by examining five forces: competitive rivalry, supplier power, buyer power, threat of substitutes, and threat of new entrants. The skill frames the work from the perspective of a competitive strategist analyzing a given industry or market supplied as arguments.

For each of the five forces, the skill lays out the conditions that make it high versus low and the strategic implications that follow. Competitive rivalry considers factors like the number and size of competitors, industry growth, differentiation, fixed and exit costs. Supplier and buyer power examine concentration, switching costs, integration threats, and bargaining leverage. Threat of substitutes weighs the availability, performance, and switching costs of alternatives, while threat of new entrants looks at barriers to entry, margins, economies of scale, network effects, and regulation. The output process guides the analyst to rate each force as High, Medium, or Low, assess overall industry attractiveness, note each force's current state and trend, prioritize the two or three most critical forces, and develop strategic responses and positioning opportunities.

This skill targets product managers, strategists, founders, and analysts evaluating industry dynamics or market entry. It expects inputs such as an industry or market definition, current competitors and positioning, the supplier and customer landscape, potential substitutes and new entrants, and product specifics. Stated caveats include that no industry is universally attractive or unattractive because position matters, the same industry can differ by company, and forces change over time and should be re-assessed. It also recommends combining Porter's Five Forces with SWOT and PESTLE for a more comprehensive analysis.

FAQ

What are the five forces analyzed?

Competitive rivalry, supplier power, buyer power, threat of substitutes, and threat of new entrants.

What inputs does the analysis need?

An industry or market definition, current competitors and competitive positioning, the supplier and customer landscape, potential substitutes and new entrants, and product or service specifics.

How is the output structured?

Assess each force as High, Medium, or Low, rate overall industry attractiveness, identify each force's current state and trend and key players, prioritize the 2-3 most critical forces, and develop strategic responses and positioning opportunities.

Can it be combined with other frameworks?

Yes. The skill recommends using Porter's Five Forces alongside SWOT and PESTLE for a comprehensive analysis.

Is an industry rating fixed?

No. No industry is universally attractive or unattractive since position matters, the same industry can be attractive for some companies and not others, and forces change over time and should be re-assessed as the market evolves.

Install porters-five-forces

Download and extract the skill files to your .claude/skills/ directory.

Quick Setup:

  1. Copy the skill folder to .claude/skills/
  2. Claude will automatically detect and use the skill