porter

porter is a skill for Claude Code, Codex from ironyjk/strategy-frameworks. It costs 42 tokens per session (1,848 once invoked), scanned A, original, MIT.

A set of business strategy tools for studying competition and how companies create an advantage. It includes models for industry forces, value chains, positioning, and national advantage.

In plain words
What is it for?
Use it to assess competitors, suppliers, customers, new entrants, substitutes, internal activities, and strategic positioning.
Why use it?
It gives a structured way to understand why an industry is profitable or difficult and where a company may compete effectively.

Skill for Claude CodeCodex

Part of the strategy-frameworks plugin — 27 skills shipped together

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.

agentmods
npx agentmods add skills/ironyjk/strategy-frameworks/porter
Any agent
npx skills add ironyjk/strategy-frameworks --skill porter
Clone the repo
git clone --depth 1 https://github.com/ironyjk/strategy-frameworks

Made for: Claude Code, Codex.

Or install strategy-frameworks, the plugin that ships this one along with the rest of its 27 skills.

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 porter

README.md
[![agentmods](https://agentmods.dev/badge/skills/ironyjk/strategy-frameworks/porter.svg)](https://agentmods.dev/skills/ironyjk/strategy-frameworks/porter)
Your own site
<a href="https://agentmods.dev/skills/ironyjk/strategy-frameworks/porter"><img src="https://agentmods.dev/badge/skills/ironyjk/strategy-frameworks/porter.svg" alt="Measured on agentmods" height="20"></a>
Per session 42 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,848 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00042 $0.01848
Opus 5 $0.00021 $0.00924
Sonnet 5 $0.00008 $0.00370
Haiku 4.5 $0.00004 $0.00185

Measured 5d ago against content hash 8ef834efb4c9, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

porter 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.

porter/SKILL.md · 203 lines

How it starts

The opening of the file, as written. The whole thing — 203 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Porter's Strategic Frameworks — Understand Competitive Forces

You are a strategy consultant using Michael Porter's frameworks.

Framework 1: Five Forces Analysis

Determine industry attractiveness and profitability:

                    ┌─────────────────┐
                    │  New Entrants    │
                    │  (Threat)        │
                    └────────┬────────┘
                             │
                             ▼
┌──────────────┐    ┌────────────────┐    ┌──────────────┐
│  Suppliers   │───▶│  Industry      │◀───│  Buyers      │
│  (Power)     │    │  Rivalry       │    │  (Power)     │
└──────────────┘    └────────┬───────┘    └──────────────┘
                             │
                             ▼
                    ┌─────────────────┐
                    │  Substitutes    │
                    │  (Threat)       │
                    └─────────────────┘

Force 1: Competitive Rivalry (산업 내 경쟁)

  • Number and balance of competitors
  • Industry growth rate
  • Fixed costs / storage costs
  • Product differentiation
  • Exit barriers

Force 2: Threat of New Entrants (신규 진입 위협)

  • Economies of scale
  • Capital requirements
  • Access to distribution
  • Government policy / licensing
  • Brand loyalty / switching costs

Force 3: Bargaining Power of Suppliers (공급자 교섭력)

  • Number of suppliers
  • Unique inputs
  • Switching costs
  • Forward integration threat

Force 4: Bargaining Power of Buyers (구매자 교섭력)

  • Number of buyers
  • Order size importance
  • Product differentiation
  • Price sensitivity
  • Backward integration threat

Force 5: Threat of Substitutes (대체재 위협)

  • Availability of close substitutes
  • Price-performance of substitutes
  • Switching costs
  • Buyer propensity to substitute

Rating: Each force → Low / Medium / High → Overall industry attractiveness

Framework 2: Value Chain Analysis

┌─────────────────────────────────────────────────────────┐
│ SUPPORT ACTIVITIES                                       │
│  Firm Infrastructure (management, finance, legal)        │
│  Human Resource Management                               │
│  Technology Development                                  │
│  Procurement                                             │
├───────┬──────┬──────────┬────────────┬──────────────────┤
│ Inbound│Opera-│ Outbound │ Marketing  │ Service          │
│Logis-  │tions │ Logistics│ & Sales    │                  │
│tics    │      │          │            │                  │
├───────┴──────┴──────────┴────────────┴──────────────────┤
│                    MARGIN                                │
└─────────────────────────────────────────────────────────┘
          PRIMARY ACTIVITIES ──────────────────→

Read the full file on GitHub · 203 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 203 lines · 42 tokens per session scan A 8ef834efb4c9

Subscribe to this mod's changes

porter is a skill published in the GitHub repository ironyjk/strategy-frameworks (11 stars, last pushed 4mo ago), licensed MIT. It adds 42 tokens to every session and 1,848 once invoked, about $0.0002 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 2026-08-30.

Related

Other skills, from other repositories

new-venture

This skill should be used when the user wants to start working on a new business idea, product, startup, or client engagement — e.g. "I have a new idea", "set up a new venture", "register a new client", "let's analyze this business", "ایده جدید دارم", "یه بیزینس جدید", "ونچر جدید بساز", "کلاینت جدید", "می‌خوام روی این…

heyparsadev/claude-venture-plugin · 118 tokens

ceo-skill

CEO decision-making advisor and strategic thinking partner. Use when users need help with executive-level decisions including strategy, resource allocation, risk assessment, competitive positioning, organizational design, M&A evaluation, crisis response, OKR/KPI setting, fundraising, stakeholder management, cognitive…

AIPMAndy/CEOskill · 133 tokens

bill-gates

Agente que simula Bill Gates — cofundador da Microsoft, arquiteto da industria de software comercial, estrategista tecnologico global, investidor sistemico e filantropo baseado em dados.

aboalrejal-ai/skills · 46 tokens

apply-fast-follower-strategy

Use when deciding whether to pioneer a new product category or market first, or deliberately let competitors validate it before entering with superior execution — per Duan Yongping's 敢为天下后 ("dare to follow, not pioneer") principle.

jeffreytse/grimoire-core · 55 tokens

design-kpi-dashboard

Use when building or redesigning a performance dashboard to track organizational, team, or product KPIs and support data-driven decisions.

jeffreytse/grimoire-core · 29 tokens

gtm

This skill should be used when the user asks for go-to-market strategy, positioning, launch planning, channel strategy, pricing strategy, or messaging — e.g. "build a GTM strategy", "how should we launch", "which channels should we use", "positioning for my product", "pricing strategy", "استراتژی ورود به بازار"…

heyparsadev/claude-venture-plugin · 131 tokens