Agent skill

App Store Assets

by gustavscirulis in gustavscirulis/snapgrid

Comprehensive App Store asset specifications and guidelines for all promotional artwork — app icons, screenshots, app previews, event cards, subscription images, and featuring artwork.

Custom licenceAuto-check passedMobile

Install App Store Assets

skills CLI
$ npx skills add gustavscirulis/snapgrid --skill app-store-assets -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install gustavscirulis/snapgrid app-store-assets --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/gustavscirulis/snapgrid.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/skills/generators/app-store-assets .claude/skills/app-store-assets && rm -rf skills-src

Use ~/.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/

Facts

Skill name
app-store-assets
GitHub stars
116
Used in
1 other repo
Token cost
~600 tokens
SKILL.md length
160 words
Files
2
Skills in repo
118
Repo updated
First seen
Licence
Custom licence

At a glance

Comprehensive App Store asset specifications and guidelines for all promotional artwork — app icons, screenshots, app previews, event cards, subscription images, and featuring artwork.

  • Works in 2 steps: Which platforms? (multi-select) → What assets do you need?
  • Preparing assets for App Store Connect upload
  • SKILL.md covers When This Skill Activates, Configuration Questions, Output Format and References
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

App Store Assets is an agent skill from gustavscirulis/snapgrid. Comprehensive App Store asset specifications and guidelines for all promotional artwork — app icons, screenshots, app previews, event cards, subscription images, and featuring artwork. Use when preparing assets for App Store Connect upload.

Its SKILL.md is about 600 tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `specs-reference.md`).

It sits in Mobile, covering App store release. It works with App Store Connect. The repository describes itself as: SnapGrid is an open-source Mac app for collecting, organizing, and analyzing UI screenshots. It uses AI to automatically detect UI components and patterns, making it a powerful…

When your agent uses it

  • Preparing assets for App Store Connect upload
  • Tasks that involve App store release

Example prompts

  • “/app-store-assets”

Requirements

  • Pre-approved tools (allowed-tools): Read, Write, Edit, Glob, Grep, AskUserQuestion

Workflow steps

2 steps, taken from the first numbered list in SKILL.md.

  1. Which platforms? (multi-select)
  2. What assets do you need?

What it can do on your machine

Read from SKILL.md and the folder at commit eb7eaf4. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read
    • Write
    • Edit
    • Glob
    • Grep
    • AskUserQuestion

    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

    No URLs in SKILL.md.

    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

App Store Assets loads about 600 tokens when it runs. Until then it costs about 64 tokens; SKILL.md has 160 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~64
When it runs · the whole SKILL.md, loaded when a task matches
~600

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 160 words (~600 tokens).

“Generate complete asset specifications, design guidelines, and checklists for all App Store Connect promotional artwork and media.”

— opening of SKILL.md by gustavscirulis, Custom licence
name
app-store-assets
allowed-tools
Read, Write, Edit, Glob, Grep, AskUserQuestion

Read the full SKILL.md on GitHub

Files

SKILL.md and 1 other file in .claude/skills/skills/generators/app-store-assets of gustavscirulis/snapgrid.

  • SKILL.md
  • specs-reference.md

Open the folder on GitHubat commit eb7eaf4

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in gustavscirulis/snapgrid, which our catalogue first saw on October 7, 2026.

Compare with similar skills

App Store Assets 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.

App Store Assets compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
App Store Assets this skillgustavscirulis/snapgrid1161 repos~600Automated safety check: PassCustom licence
Asc Ppp Pricingrorkai/app-store-connect-cli-skills1.1k3 repos~4.2kAutomated safety check: PassMIT
Asc Subscription Localizationrorkai/app-store-connect-cli-skills1.1k2 repos~2.7kAutomated safety check: PassMIT
Sync Asc Skillsrorkai/App-Store-Connect-CLI7.7k—~782Automated safety check: PassMIT
Asc Wall Submitrorkai/app-store-connect-cli-skills1.1k3 repos~422Automated safety check: PassMIT
App Namerrshankras/claude-code-apple-skills787—~3.4kAutomated safety check: PassMIT

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Categories

Questions about App Store Assets

What does App Store Assets do?

Comprehensive App Store asset specifications and guidelines for all promotional artwork — app icons, screenshots, app previews, event cards, subscription images, and featuring artwork. App Store Assets is an agent skill from gustavscirulis/snapgrid. Comprehensive App Store asset specifications and guidelines for all promotional artwork — app icons, screenshots, app previews, event cards, subscription images, and featuring artwork.

When should I use App Store Assets?

App Store Assets fits situations like: preparing assets for App Store Connect upload; tasks that involve App store release.

How do I install App Store Assets in Claude Code?

Run `npx skills add gustavscirulis/snapgrid --skill app-store-assets -a claude-code`. Or copy the skill folder (.claude/skills/skills/generators/app-store-assets in gustavscirulis/snapgrid) into .claude/skills/app-store-assets in your project. Claude Code loads it when a task matches its description.

How do I install App Store Assets in Codex?

Run `npx skills add gustavscirulis/snapgrid --skill app-store-assets -a codex`. Or copy the skill folder (.claude/skills/skills/generators/app-store-assets in gustavscirulis/snapgrid) into .agents/skills/app-store-assets in your project. Codex loads it when a task matches its description.

Can I use App Store Assets 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 gustavscirulis/snapgrid --skill app-store-assets -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/app-store-assets, .gemini/skills/app-store-assets, .github/skills/app-store-assets and .opencode/skills/app-store-assets in your project.

What does App Store Assets need to run?

SKILL.md names no scripts, command-line tools or credentials: App Store Assets is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Write, Edit, Glob, Grep, AskUserQuestion.

Does App Store Assets access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is App Store Assets 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 App Store Assets use?

App Store Assets 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 App Store Assets use?

About 600 tokens (SKILL.md is roughly 2.4k 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 App Store Assets?

Skills that share tags, products or a category with App Store Assets: Asc Ppp Pricing (rorkai/app-store-connect-cli-skills, 1.1k stars), Asc Subscription Localization (rorkai/app-store-connect-cli-skills, 1.1k stars), Sync Asc Skills (rorkai/App-Store-Connect-CLI, 7.7k stars) and Asc Wall Submit (rorkai/app-store-connect-cli-skills, 1.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains App Store Assets?

gustavscirulis (a GitHub user) maintains it in gustavscirulis/snapgrid, which has 116 GitHub stars. The repository holds 118 skills in this directory. The repository was last updated on April 30, 2026.

Source: gustavscirulis/snapgrid on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.