porters-five-forces
Read an industry's structure through Porter's Five Forces with documented signals per rating, ending at the profit pool. Use when weighing market entry or when margins erode and nobody can say why.
npx skills add deanpeters/Product-Manager-Skills --skill porters-five-forces --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Porter's Five Forces (Evidence-Cited) ## Purpose Read an industry's structure through Porter's Five Forces, with evidence: **search plan → force-by-force ratings with signals → profit-pool implication → next-step options.** Each force — competitive rivalry, threat of new entrants, threat of substitutes, buyer power, supplier power — is rated weak/moderate/strong and justified with documented signals, because a rating without signals is vibes. The analysis closes where it should have been aiming all along: **where the profit pool sits and who is squeezing it.** Five forces is an argument about where margin goes, not a diagram for slide four. ## Input **Works best with:** the industry or segment, named as precisely as you can ("clinical data management SaaS," not "healthcare"), and **the decision this analysis should support**. **Also useful:** a geographic boundary if the structure differs by region, and a [`market-landscape-scan`](../market-landscape-scan/SKILL.md) in session — the forces read builds on it and searches only gaps. Input supplied inline with the invocation — text after the skill name, a pasted context dump, or an appended `ARGUMENTS:` line — counts as answers alrea
- Purpose
- Input
- Key Concepts
- Application
- Output schema (do not reorder)
- Final Step (offer exactly 4 options)
- Examples
- Common Pitfalls
- References
What does the porters-five-forces skill do?
Read an industry's structure through Porter's Five Forces with documented signals per rating, ending at the profit pool. Use when weighing market entry or when margins erode and nobody can say why.
How do I install it?
Run `npx skills add deanpeters/Product-Manager-Skills --skill porters-five-forces --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From deanpeters/Product-Manager-Skills, a repository with 6,255 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.