Marketing Plan
Nexus-JPF/note-companion
When the user needs a comprehensive marketing plan for a client, a company they advise, or their own product.
Read an industry's structure through Porter's Five Forces with documented signals per rating, ending at the profit pool.
Install Porters Five Forces
$ npx skills add deanpeters/Product-Manager-Skills --skill porters-five-forces -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install deanpeters/Product-Manager-Skills porters-five-forces --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/deanpeters/Product-Manager-Skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/porters-five-forces .claude/skills/porters-five-forces && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "porters-five-forces" agent skill from https://github.com/deanpeters/Product-Manager-Skills/tree/main/skills/porters-five-forces into .claude/skills/porters-five-forces/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "porters-five-forces", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/deanpeters/Product-Manager-Skills/tree/main/skills/porters-five-forcesType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add deanpeters/Product-Manager-Skills --skill porters-five-forces -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install deanpeters/Product-Manager-Skills porters-five-forces --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/deanpeters/Product-Manager-Skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/porters-five-forces .agents/skills/porters-five-forces && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "porters-five-forces" agent skill from https://github.com/deanpeters/Product-Manager-Skills/tree/main/skills/porters-five-forces into .agents/skills/porters-five-forces/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "porters-five-forces", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add deanpeters/Product-Manager-Skills --skill porters-five-forces -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install deanpeters/Product-Manager-Skills porters-five-forces --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/deanpeters/Product-Manager-Skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/porters-five-forces .cursor/skills/porters-five-forces && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "porters-five-forces" agent skill from https://github.com/deanpeters/Product-Manager-Skills/tree/main/skills/porters-five-forces into .cursor/skills/porters-five-forces/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "porters-five-forces", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/deanpeters/Product-Manager-Skills.git --path skills/porters-five-forces--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add deanpeters/Product-Manager-Skills --skill porters-five-forces -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install deanpeters/Product-Manager-Skills porters-five-forces --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/deanpeters/Product-Manager-Skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/porters-five-forces .gemini/skills/porters-five-forces && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "porters-five-forces" agent skill from https://github.com/deanpeters/Product-Manager-Skills/tree/main/skills/porters-five-forces into .gemini/skills/porters-five-forces/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "porters-five-forces", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install deanpeters/Product-Manager-Skills porters-five-forcesInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add deanpeters/Product-Manager-Skills --skill porters-five-forces -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/deanpeters/Product-Manager-Skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/porters-five-forces .github/skills/porters-five-forces && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "porters-five-forces" agent skill from https://github.com/deanpeters/Product-Manager-Skills/tree/main/skills/porters-five-forces into .github/skills/porters-five-forces/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "porters-five-forces", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add deanpeters/Product-Manager-Skills --skill porters-five-forces -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install deanpeters/Product-Manager-Skills porters-five-forces --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/deanpeters/Product-Manager-Skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/porters-five-forces .opencode/skills/porters-five-forces && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "porters-five-forces" agent skill from https://github.com/deanpeters/Product-Manager-Skills/tree/main/skills/porters-five-forces into .opencode/skills/porters-five-forces/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "porters-five-forces", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
porters-five-forces- GitHub stars
- 7.2k
- Token cost
- ~2.7k tokens
- SKILL.md length
- 1,014 words
- Files
- 4
- Skills in repo
- 75
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Read an industry's structure through Porter's Five Forces with documented signals per rating, ending at the profit pool.
- Works in 3 steps: Credit inline context, then ask only the… → Show the 3-bullet search plan — what… → Rate each force with signals, then emit…
- Weighing market entry
- SKILL.md covers Purpose, Input, Key Concepts and Application, plus 3 more sections
- Reaches github.com
What it does
Porters Five Forces is an agent skill from deanpeters/Product-Manager-Skills. 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.
Its SKILL.md is about 2.7k tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files (for example `examples/sample-industrial.md`, `examples/sample.md` and `template.md`).
It sits in Marketing & SEO, covering Go-to-market strategy. The repository describes itself as: Product Management skills framework built on battle-tested methods for Claude Code, Cowork, Codex, and AI agents.
When your agent uses it
- Weighing market entry
- Margins erode and nobody can say why
Example prompts
- “s structure through Porter”
- “/porters-five-forces”
Workflow steps
3 steps, taken from the first numbered list in SKILL.md.
- Credit inline context, then ask only the unanswered questions (max 3)
- Show the 3-bullet search plan — what you'll search per force, source types (filings, analyst
- Rate each force with signals, then emit the schema below exactly.
What it can do on your machine
Read from SKILL.md and the folder at commit 1b5a524. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are markdown).
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
github.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Porters Five Forces loads about 2.7k tokens when it runs. Until then it costs about 54 tokens; SKILL.md has 1,014 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 1,014 words (~2,680 tokens).
“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 —…”
- name
- porters-five-forces
- argument-hint
- [industry or segment, and the decision it supports]
- intent
- An evidence-cited five-forces read: rivalry, new entrants, substitutes (with AI-driven substitution named explicitly), buyer power, and supplier power — each…
- type
- workflow
- theme
- market-intelligence
- best_for
- Pressure-testing a market-entry decision against the industry's actual structure, Explaining margin erosion structurally instead of blaming execution…
- scenarios
- We're considering entering the clinical-data-management space — what does its structure do to everyone who plays?, Our margins keep compressing and every…
- estimated_time
- 25-40 min per run
Files
SKILL.md and 3 other files in skills/porters-five-forces of deanpeters/Product-Manager-Skills.
- SKILL.md
- examples/sample-industrial.md
- examples/sample.md
- template.md
Open the folder on GitHubat commit 1b5a524
Compare with similar skills
Porters Five Forces next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Porters Five Forces this skilldeanpeters/Product-Manager-Skills | 7.2k | — | ~2.7k | Automated safety check: Pass | Custom licence | |
| Marketing PlanNexus-JPF/note-companion | 870 | 5 repos | ~5.2k | Automated safety check: Pass | MIT | |
| Revenue Centric Designheliocosta-dev/revenue-centric-design | 740 | — | ~1.6k | Automated safety check: Pass | Custom licence | |
| Startup Designferdinandobons/startup-skill | 1.2k | — | ~8.1k | Automated safety check: Pass | MIT | |
| Jaredrhod Marketingjaredrhod/ai-marketing-skills | 282 | — | ~584 | Automated safety check: Pass | CC-BY-SA-4.0 | |
| Traffic Acquisitionvivy-yi/xiaohongshu-skills | 481 | 1 repos | ~4k | Automated safety check: Pass | None |
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Related
Categories
Questions about Porters Five Forces
What does Porters Five Forces do?
Read an industry's structure through Porter's Five Forces with documented signals per rating, ending at the profit pool. Porters Five Forces is an agent skill from deanpeters/Product-Manager-Skills. Read an industry's structure through Porter's Five Forces with documented signals per rating, ending at the profit pool.
When should I use Porters Five Forces?
Porters Five Forces fits situations like: weighing market entry; margins erode and nobody can say why.
How do I install Porters Five Forces in Claude Code?
Run `npx skills add deanpeters/Product-Manager-Skills --skill porters-five-forces -a claude-code`. Or copy the skill folder (skills/porters-five-forces in deanpeters/Product-Manager-Skills) into .claude/skills/porters-five-forces in your project. Claude Code loads it when a task matches its description.
How do I install Porters Five Forces in Codex?
Run `npx skills add deanpeters/Product-Manager-Skills --skill porters-five-forces -a codex`. Or copy the skill folder (skills/porters-five-forces in deanpeters/Product-Manager-Skills) into .agents/skills/porters-five-forces in your project. Codex loads it when a task matches its description.
Can I use Porters Five Forces in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add deanpeters/Product-Manager-Skills --skill porters-five-forces -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/porters-five-forces, .gemini/skills/porters-five-forces, .github/skills/porters-five-forces and .opencode/skills/porters-five-forces in your project.
What does Porters Five Forces need to run?
SKILL.md names no scripts, command-line tools or credentials: Porters Five Forces is instructions for the agent only.
Does Porters Five Forces access the network?
SKILL.md names 1 domain. In commands or code: github.com; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.
Is Porters Five Forces safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Porters Five Forces use?
Porters Five Forces has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Porters Five Forces use?
About 2.7k tokens (SKILL.md is roughly 11k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Porters Five Forces?
Skills that share tags, products or a category with Porters Five Forces: Marketing Plan (Nexus-JPF/note-companion, 870 stars), Revenue Centric Design (heliocosta-dev/revenue-centric-design, 740 stars), Startup Design (ferdinandobons/startup-skill, 1.2k stars) and Jaredrhod Marketing (jaredrhod/ai-marketing-skills, 282 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Porters Five Forces?
deanpeters (a GitHub user) maintains it in deanpeters/Product-Manager-Skills, which has 7,224 GitHub stars. The repository holds 75 skills in this directory. The repository was last updated on September 1, 2026.
Source: deanpeters/Product-Manager-Skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.