412 tokens
context cost
the whole folder, loaded on every use
1
files
instructions only
0
copies elsewhere
how many repositories repackaged it
365
stars on the repo
on the repository, not the skill itself
Install
one command, takes just this skill from the repository
npx skills add https://github.com/cosmicstack-labs/mercury-agent-skills --skill app-store-optimization
The instruction itself
8 sections, as written by the author
App Store Optimization (ASO)
Optimize your app's presence on the App Store and Google Play.
Keyword Strategy
Research Process
- Brainstorm 50-100 terms users might search
- Categorize: Brand, Category, Feature, Competitor
- Score each by: Volume × Relevance ÷ Competition
- Select top 10-15 for your listing
App Store (iOS)
- Title gets most weight — front-load primary keyword
- Subtitle and keyword field get secondary weight
- 100 characters max in keyword field (no spaces, comma-separated)
- Don't repeat words already in title/subtitle
Google Play
- Full title (50 chars) and short description (80 chars) indexed
- Long description (4000 chars) gets less weight but matters for conversions
- Include keywords 3-5x naturally in long description
Visual Optimization
Screenshots (critical for conversion)
- 1st screenshot: Hero — show the core value prop
- Create a story across 4-6 screenshots
- Text overlays: 5-7 words max, high contrast
- A/B test screenshot styles every quarter
- iPhone 6.7" and iPad sizes required (App Store)
Ratings & Reviews
- Request review after positive user action (not on launch)
- iOS:
SKStoreReviewController — max 3 prompts per 365 days
- Reply to all reviews, especially negative ones
- Fix issues mentioned in poor reviews before next update