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Porter's Five Forces · borghei | DecimalAI

researchby borghei

Porter's Five Forces

borghei/porters-five-forces

Source borghei/claude-skills ↗License NOASSERTION

Porter's Five Forces — analyze the competitive intensity and attractiveness of an industry.

SkillScore78Maintained

Automatic

Product Management pack

Last verified 8/20/2026

What it changes

Passed 18 of 23 test cases with the skill, and 12 of 23 without it.

Without skill52%

With skill78%

Checks it passed that the model alone missed

Lists explicit assumptions at the top of the report.
Names five_forces_scorer.py as the execution script.
Provides factual evidence backing each force rating.

and 6 more in the full report

7 fixed11 passed either way4 still failing1 broke

Pass-rate lift: +26 pp
Tokens: +65%
Agent turns: 0%
Response time: +11%

Model gemini-3.6-flashMeasured 8/20/2026v118 of 23 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/borghei-porters-five-forces/SKILL.md https://app.decimal.ai/s/borghei-porters-five-forces/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add borghei-porters-five-forces, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/borghei-porters-five-forces/ and pins it in .decimal/skills.lock

decimalai skills add borghei-porters-five-forces

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/borghei-porters-five-forces/SKILL.md https://app.decimal.ai/s/borghei-porters-five-forces/SKILL.md

Raw file: /s/borghei-porters-five-forces/SKILL.md ↗ · machine-readable summary at /s/borghei-porters-five-forces.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 7 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 7

Prompt

Just draft it: We have structured our industry force analysis into a JSON object `forces.json` containing forces, scores, evidence, and strategic implications. What automated script or CLI command within this project structure audits `forces.json` for missing evidence or generic factors?

What was checked, without and with the skill
Checked	Without skill	With skill
Names five_forces_scorer.py as the execution script.	Missed	Passed
Includes the --input flag in the command execution example.	Missed	Passed

case-16 · gemini-3.6-flash · 8/20/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md158 lines5 filesincludes scripts

Porter's Five Forces

Michael Porter's framework for analyzing the structural attractiveness of an industry. Reveals where profit pools form, why some markets are chronically unprofitable, and where strategic positioning has leverage.

When to use this skill

Market entry decision (which industry to play in)
Diagnosing chronic margin pressure (why are we squeezed?)
Strategic positioning (where to invest, where to defend)
Competitive response planning
M&A target evaluation (industry attractiveness)
Pre-fundraise industry framing

The 5 forces

Threat of new entrants — how easily can newcomers join?
Bargaining power of suppliers — how concentrated/critical are inputs?
Bargaining power of buyers — how concentrated/price-sensitive are customers?
Threat of substitute products — what alternatives could replace the category?
Competitive rivalry — how intense is competition between existing players?

Plus (Porter's later addition): 6. Complementors (the "sixth force") — do partners increase total industry value?

Scoring rubric

Each force is rated low / medium / high based on specific factors:

1. Threat of new entrants — high when:

Low capital requirements
No regulatory barriers
No proprietary tech / patents
Low switching costs
No economies of scale
No brand loyalty
Access to distribution is easy
Network effects absent

Track record

Benchmark

18 / 23

test cases passed, vs 12 / 23 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

borghei / claude-skills

project-management/strategy-frameworks/porters-five-forces/SKILL.md

View on GitHub ↗

License MIT + Commons ClauseImported 8/3/2026Version v1Bundled 4 files · scripts

Other skills for the same job

Published skills whose descriptions closely match this one, with their headline benchmark lift.

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

Porter's Five Forces

When to use this skill

The 5 forces

Scoring rubric

1. Threat of new entrants — high when:

Track record

Benchmark

Adoption

SkillSafety

Source

Other skills for the same job

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