porters-five-forces

porters-five-forces is a skill for Claude Code from fatihguner/foreman. It costs 58 tokens per session (3,558 once invoked), scanned A, original, MIT.

A business strategy framework for analysing competition in an industry through five forces: new competitors, suppliers, customers, substitutes, and rivalry between existing businesses. It is used to judge how difficult it may be to earn sustainable profits.

In plain words
What is it for?
Use it when assessing market entry, industry attractiveness, competitive strategy, pricing pressure, or threats from alternatives and new businesses.
Why use it?
It prevents competitive analysis from becoming a simple list of rivals or high-and-low ratings. It directs attention to the structures that shape pricing pressure and profit potential.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the foreman plugin — 142 skills, 60 commands, 7 agents shipped together

Good fit Use it when assessing market entry, industry attractiveness, competitive strategy, pricing pressure, or threats from alternatives and new businesses.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/fatihguner/foreman/porters-five-forces
Install

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.

Any agent
npx skills add fatihguner/foreman --skill porters-five-forces
Clone the repo
git clone --depth 1 https://github.com/fatihguner/foreman

Made for: Claude Code.

Or install foreman, the plugin that ships this one along with the rest of its 142 skills, 60 commands, 7 agents.

Wrote 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.

agentmods badge for porters-five-forces

README.md
[![agentmods](https://agentmods.dev/badge/skills/fatihguner/foreman/porters-five-forces/github.svg)](https://agentmods.dev/skills/fatihguner/foreman/porters-five-forces)
Your own site
<a href="https://agentmods.dev/skills/fatihguner/foreman/porters-five-forces"><img src="https://agentmods.dev/badge/skills/fatihguner/foreman/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.

agentmods 80×15 button for porters-five-forces

Your own site · 80×15
<a href="https://agentmods.dev/skills/fatihguner/foreman/porters-five-forces"><img src="https://agentmods.dev/badge/skills/fatihguner/foreman/porters-five-forces.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 58 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,558 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00058 $0.03558
Opus 5 $0.00029 $0.01779
Sonnet 5 $0.00012 $0.00712
Haiku 4.5 $0.00006 $0.00356

Measured 5d ago against content hash 5d0da65e49b6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

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 5d 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.

plugins/foreman/skills/porters-five-forces/SKILL.md · 223 lines

How it starts

The opening of the file, as written. The whole thing — 223 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Read runtime and advisory rules before applying this skill. Other Foreman layers and the catalog are in ../../content/, relative to this SKILL.md.

Porter's Five Forces

Most people use Porter's Five Forces wrong. They fill in the five boxes, label each force as "high," "medium," or "low," and conclude that they have performed strategic analysis. They have not. Michael Porter's framework, introduced in his 1979 Harvard Business Review article "How Competitive Forces Shape Strategy" and elaborated in Competitive Strategy (1980), is not a checklist. It is a theory of profitability -- an explanation of why some industries are structurally profitable and others are not, and why positioning within an industry matters more than operational excellence. The five forces determine the profit potential of an industry. Understanding them determines whether a startup is entering a gold mine or a tar pit. Misunderstanding them -- which is the norm -- produces strategies that fight industry structure rather than leveraging it.


The Framework

The Five Forces

Porter's model identifies five competitive forces that collectively determine the intensity of competition and, therefore, the profit potential of any industry.

                    ┌───────────────────────┐
                    │   THREAT OF NEW       │
                    │   ENTRANTS            │
                    └───────────┬───────────┘
                                │
                                ▼
┌──────────────┐    ┌───────────────────────┐    ┌──────────────┐
│ BARGAINING   │───▶│   INDUSTRY RIVALRY    │◀───│ BARGAINING   │
│ POWER OF     │    │   (among existing     │    │ POWER OF     │
│ SUPPLIERS    │    │    competitors)        │    │ BUYERS       │
└──────────────┘    └───────────┬───────────┘    └──────────────┘
                                │
                                ▼
                    ┌───────────────────────┐
                    │   THREAT OF           │
                    │   SUBSTITUTES         │
                    └───────────────────────┘

Read the full file on GitHub · 223 lines

Changes

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.

  1. 5d ago First seen · 223 lines · 58 tokens per session scan A 5d0da65e49b6

Subscribe to this mod's changes

porters-five-forces is a skill published in the GitHub repository fatihguner/foreman (50 stars, last pushed 5d ago), licensed MIT. It adds 58 tokens to every session and 3,558 once invoked, about $0.0003 per session on Opus 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 2026-09-06.

Related

Other skills, from other repositories

apply-five-factors-assessment

Use when preparing for any competitive engagement — product launch, market entry, negotiation, or campaign — to audit your position across the five strategic dimensions before committing resources.

jeffreytse/grimoire-core · 38 tokens

war-room

Convenes a multi-LLM expert panel to pressure-test hard-to-reverse decisions. Use when reversibility score is low and adversarial review is warranted.

athola/claude-night-market · 35 tokens

Decision Helper

Make better decisions using structured frameworks and mental models.

eddiebelaval/squire · 12 tokens

competitor-analyst

Use this skill when analyzing competitors, building competitive positioning, creating feature comparison matrices, or applying strategic frameworks like SWOT or Porter's Five Forces. Trigger phrases: 'analyze our competitors', 'competitive analysis for', 'how do we compare to', 'create a feature matrix', 'SWOT…

NickCrew/Claude-Cortex · 96 tokens

decision-maker

Use this skill when you face a complex or high-stakes decision and need a structured framework to evaluate options objectively. Ideal for career choices, product prioritization, vendor selection, or any multi-criteria trade-off. Not for trivial daily decisions or situations that require licensed professional advice.

NickCrew/Claude-Cortex · 59 tokens

apply-local-market-adaptation-strategy

Use when entering or investing in a new geographic market with an existing successful business model — adapting the model to local consumer behavior, regulatory environment, and competitive dynamics rather than directly porting the original model unchanged.

jeffreytse/grimoire-core · 49 tokens