Add AAJ Marketing Skills skill

[sarojkjha]

Adds AAJ Marketing Skills to Business & Marketing.

What problem it solves

Most marketing skills produce prose — a plan, a rewrite, a recommendation. They
can't tell you whether the plan holds up. These do the arithmetic: 24 of the 39
skills ship runnable Node engines that compute and return real numbers, so the
agent's advice rests on a calculation instead of a plausible-sounding paragraph.

Engines cover LTV:CAC and CAC payback, weighted pipeline forecasts and coverage
gaps, A/B test significance and sizing, paid budget allocation against a CAC
target, growth-loop amplification, churn and NRR, SEO/GEO/AEO page scoring, and
AI answer-engine citation tracking — including whether a change between runs is
statistically distinguishable from noise.

Who uses this workflow

Founders and marketers at seed to Series B startups, and the consultants working
with them. Built and used in live client engagements rather than generated in bulk.

Attribution

Built by Saroj Jha (AAJ), https://aajconsult.com. MIT licensed.

Example

npx skills add sarojkjha/aaj-marketing-skills --skill unit-economics
node .agents/skills/unit-economics/resources/unit-economics.js

Runs with no configuration and prints:

Gross-margin LTV        $13,333   (3.0% monthly churn (~33.3 mo lifetime))
CAC                     $3,000
LTV : CAC               4.4:1
CAC payback             7.5 mo
✓ LTV:CAC 4.4:1 is at or above the 3:1 floor.
✓ CAC payback 7.5 mo is within the ~12-month guideline for subscription.

Also emits JSON for programmatic use. Every engine has an equivalent demo.

• Repo: https://github.com/sarojkjha/aaj-marketing-skills
• Directory: https://www.skills.sh/sarojkjha/aaj-marketing-skills
• License: MIT
• Works with Claude Code, Cursor, Codex, Windsurf
• Security: Gen — Safe, Socket — 0 alerts