marketing-principles — Claude Code skill: marketing decisions
A skill that makes your coding agent act as a strategic advisor: it asks three questions about the business, then works the problem through Drucker, Ogilvy, Godin and Munger.
npx skills add BrianRWagner/ai-marketing-claude-code-skills --skill marketing-principles -a claude-codeWhat marketing-principles does
Installed into an agent, this skill rewrites how marketing questions get answered. Before any advice, the agent collects three facts: what you sell and to whom, what stage the business is at, and which decision is actually on the table. A vague answer triggers a follow-up question instead of a recommendation. From there it draws on 15 principles grouped into strategy, creativity and brand, execution, decision quality, and distribution.
Three modes are available. quick applies one or two relevant principles, standard builds a multi-principle analysis with a recommendation, deep adds risk assessment and an implementation roadmap. The default is standard. A lookup table maps problem types — nobody knows we exist, we keep losing to competitors, marketing isn't converting — to the principles and one concrete move. Several principles ship with fill-in-the-blank artifacts, such as a positioning statement or an experiment brief with a decision date.
One guardrail stands out: the agent must be able to name an action for the next 48 hours. If it can't, it asks another clarifying question rather than handing over generic advice. The skill works across Claude, Codex, Cursor, GitHub Copilot, Gemini CLI and OpenCode. Copilot uses a different install path, gh skill install.
What it helps with
- work through a marketing decision against named principles instead of gut feel
- write a one-sentence positioning statement and test it on real prospects
- commit to a single channel instead of spreading across ten
- list the ways a campaign could fail before spending money on it
- turn a winning experiment into a repeatable playbook
Example prompts for the agent
- Walk me through whether we should launch a referral program now, using first principles
- Help me write the "we are the only ___" statement for our product
- Run an inversion on our biggest marketing bet this quarter
How to install marketing-principles
1Skills CLI (Vercel)
npx skills add BrianRWagner/ai-marketing-claude-code-skills --skill marketing-principles -a claude-code2Manually: put the files in place
~/.claude/skills/marketing-principles/SKILL.mdCopy the whole skill folder; for one project use .claude/skills/marketing-principles/
1Skills CLI (Vercel)
npx skills add BrianRWagner/ai-marketing-claude-code-skills --skill marketing-principles -a codex2Manually: put the files in place
.agents/skills/marketing-principles/SKILL.mdFor all projects use ~/.agents/skills/
1Skills CLI (Vercel)
npx skills add BrianRWagner/ai-marketing-claude-code-skills --skill marketing-principles -a cursor2Manually: put the files in place
.cursor/skills/marketing-principles/SKILL.mdCursor also reads .agents/skills/ and .claude/skills/
1GitHub CLI
gh skill install BrianRWagner/ai-marketing-claude-code-skills marketing-principles2Manually: put the files in place
.github/skills/marketing-principles/SKILL.md1Skills CLI (Vercel)
npx skills add BrianRWagner/ai-marketing-claude-code-skills --skill marketing-principles -a gemini-cli2Platform CLI
gemini skills install https://github.com/BrianRWagner/ai-marketing-claude-code-skills --path marketing-principlesManually: put the files in place
.devin/skills/marketing-principles/SKILL.mdThe legacy .windsurf/skills/ path still works
Skills CLI (Vercel)
npx skills add BrianRWagner/ai-marketing-claude-code-skills --skill marketing-principles -a opencodeClaude.ai
Zip the folder and upload it in Settings → Capabilities → Skills
Step by step, with commands for each platform: How to install skills in Claude Code: five ways
Questions about marketing-principles
How do I install marketing-principles in Claude Code?
Run npx skills add BrianRWagner/ai-marketing-claude-code-skills --skill marketing-principles -a claude-code. The skill lands at ~/.claude/skills/marketing-principles/SKILL.md.
What does marketing-principles do?
It makes the agent gather business context and stage first, then evaluate a marketing problem against a fixed set of principles covering positioning, testing and distribution.
How do the quick, standard and deep modes differ?
quick gives a short answer from one or two principles, standard adds a recommendation, and deep includes risk assessment and a roadmap. standard is the default.
