phuryn/pm-skills is a marketplace of reusable skills, commands, and plugins that guide AI assistants through product-management work such as discovery, strategy, planning, metrics, launches, and growth. It is for product managers and teams using Claude Code, Cowork, or compatible assistants. The catalogue entries are the project's own workflows and extensions.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add phuryn/pm-skills --skill porters-five-forcesgit clone --depth 1 https://github.com/phuryn/pm-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/phuryn/pm-skills/porters-five-forces)<a href="https://agentmods.dev/skills/phuryn/pm-skills/porters-five-forces"><img src="https://agentmods.dev/badge/skills/phuryn/pm-skills/porters-five-forces/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/phuryn/pm-skills/porters-five-forces"><img src="https://agentmods.dev/badge/skills/phuryn/pm-skills/porters-five-forces.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00047 | $0.01599 |
| Opus 5.5 | $0.00019 | $0.00640 |
| Sonnet 5.5 | $0.00009 | $0.00320 |
| Haiku 4.5 | $0.00005 | $0.00160 |
Grade A, and why
porters-five-forces scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
Copies of this mod
3 near-identical copies found in the catalogue:
- porters-five-forces — 100% identical, 0 lines differ
- porters-five-forces — 100% identical, 0 lines differ
- porters-five-forces — 91% identical, 15 lines differ
How it starts
The opening of the file, as written. The whole thing — 213 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Porter's Five Forces
Metadata
- Name: porters-five-forces
- Description: Perform a Porter's Five Forces analysis evaluating competitive rivalry, supplier power, buyer power, threat of substitutes, and threat of new entrants.
- Triggers: Porter's five forces, competitive forces, industry analysis, market forces, competitive dynamics
Instructions
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.
Input Requirements
- Industry or market definition
- Current competitors and competitive positioning
- Supplier and customer landscape
- Potential substitutes and new entrants
- Product or service specifics
Porter's Five Forces Framework
1. Competitive Rivalry (How intense is competition?)
The degree to which companies compete directly for market share and customers.
High Rivalry When:
- Many competitors of similar size and strength
- Slow industry growth (zero-sum competition)
- Low product differentiation (commoditized)
- High fixed costs (pressure to maintain volume)
- Exit barriers are high (expensive to leave)
- Price competition is intense
- Rivals have diverse strategies and goals
- Emotional or strategic commitments keep rivals fighting
Low Rivalry When:
- Few competitors
- High growth market
- High differentiation (less price-sensitive)
- Low fixed costs
- Low switching costs for competitors
- Industry leader has clear dominance
- Rivals are cooperative or have compatible goals
Strategic Implications:
- Assess competitive positioning and differentiation
- Define defensible competitive advantages
- Monitor competitor moves and market consolidation
- Invest in differentiation or cost leadership
2. Supplier Power (How much power do suppliers have?)
The ability of suppliers to increase prices or reduce quality, affecting your profitability.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 213 lines · 47 tokens per session scan A a010cd7e52e2
porters-five-forces is a skill published in the GitHub repository phuryn/pm-skills (27,756 stars, last pushed 9d ago), licensed MIT. It adds 47 tokens to every session and 1,599 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-15.
porters-five-forces compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| porters-five-forcesphuryn/pm-skills | Skill | 28k | 9d ago | MIT | A | 47 | Claude Code |
| becoming-senior-pmProductfculty-aipm/PM-Copilot-by-Product-Faculty | Skill | 80 | 6mo ago | none | A | 126 | Claude Code |
| founding-pmProductfculty-aipm/PM-Copilot-by-Product-Faculty | Skill | 80 | 6mo ago | none | A | 106 | Claude Code |
| eval-suite-designProductfculty-aipm/PM-Copilot-by-Product-Faculty | Skill | 80 | 6mo ago | none | A | 83 | Claude Code |
| improvement-flywheelProductfculty-aipm/PM-Copilot-by-Product-Faculty | Skill | 80 | 6mo ago | none | A | 72 | Claude Code |
| llm-as-judgeProductfculty-aipm/PM-Copilot-by-Product-Faculty | Skill | 80 | 6mo ago | none | A | 77 | Claude Code |
| memoryProductfculty-aipm/PM-Copilot-by-Product-Faculty | Skill | 80 | 6mo ago | none | A | 150 | Claude Code |