App Store Intelligence
dylanfeltus/skills
Looks up app details, ratings and reviews and searches the iOS and Mac App Stores through Apple's free iTunes APIs, with a web-search fallback for Google Play.
End-to-end product development for iOS/macOS apps. An agent skill from gustavscirulis/snapgrid.
Install Product Development
$ npx skills add gustavscirulis/snapgrid --skill product-development -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install gustavscirulis/snapgrid product-development --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/gustavscirulis/snapgrid.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/skills/product .claude/skills/product-development && rm -rf skills-srcUse ~/.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/
Install the "product-development" agent skill from https://github.com/gustavscirulis/snapgrid/tree/main/.claude/skills/skills/product into .claude/skills/product-development/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "product-development", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/gustavscirulis/snapgrid/tree/main/.claude/skills/skills/productType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add gustavscirulis/snapgrid --skill product-development -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install gustavscirulis/snapgrid product-development --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/gustavscirulis/snapgrid.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/skills/product .agents/skills/product-development && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "product-development" agent skill from https://github.com/gustavscirulis/snapgrid/tree/main/.claude/skills/skills/product into .agents/skills/product-development/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "product-development", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add gustavscirulis/snapgrid --skill product-development -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install gustavscirulis/snapgrid product-development --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/gustavscirulis/snapgrid.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/skills/product .cursor/skills/product-development && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "product-development" agent skill from https://github.com/gustavscirulis/snapgrid/tree/main/.claude/skills/skills/product into .cursor/skills/product-development/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "product-development", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/gustavscirulis/snapgrid.git --path .claude/skills/skills/product--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add gustavscirulis/snapgrid --skill product-development -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install gustavscirulis/snapgrid product-development --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/gustavscirulis/snapgrid.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/skills/product .gemini/skills/product-development && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "product-development" agent skill from https://github.com/gustavscirulis/snapgrid/tree/main/.claude/skills/skills/product into .gemini/skills/product-development/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "product-development", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install gustavscirulis/snapgrid product-developmentInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add gustavscirulis/snapgrid --skill product-development -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/gustavscirulis/snapgrid.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/skills/product .github/skills/product-development && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "product-development" agent skill from https://github.com/gustavscirulis/snapgrid/tree/main/.claude/skills/skills/product into .github/skills/product-development/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "product-development", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add gustavscirulis/snapgrid --skill product-development -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install gustavscirulis/snapgrid product-development --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/gustavscirulis/snapgrid.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/skills/product .opencode/skills/product-development && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "product-development" agent skill from https://github.com/gustavscirulis/snapgrid/tree/main/.claude/skills/skills/product into .opencode/skills/product-development/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "product-development", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
product-development- GitHub stars
- 117
- Used in
- 1 other repo
- Token cost
- ~1.1k tokens
- SKILL.md length
- 462 words
- Files
- 2
- Skills in repo
- 118
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
End-to-end product development for iOS/macOS apps. An agent skill from gustavscirulis/snapgrid.
- Works in 4 steps: Identify where user is in product… → Read relevant module SKILL.md for… → Generate requested specifications → …
- Product planning
- SKILL.md covers When This Skill Activates, Available Modules, How to Use and Example Workflows
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Product Development is an agent skill from gustavscirulis/snapgrid. End-to-end product development for iOS/macOS apps. Covers market research, competitive analysis, PRD generation, architecture specs, UX design, implementation guides, testing, and App Store release. Use for product planning, validation, or generating specification documents.
Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `WORKFLOW.md`).
It sits in Product & Project Management, covering App store release, Market research and UX design. It works with iOS and macOS. 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
- Product planning
- Generating specification documents
Example prompts
- “/product-development”
Requirements
- Pre-approved tools (allowed-tools): Read, Write, Glob, Grep, WebFetch, WebSearch, AskUserQuestion
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Identify where user is in product lifecycle
- Read relevant module SKILL.md for detailed process
- Generate requested specifications
- Save outputs to appropriate files
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:
ReadWriteGlobGrepWebFetchWebSearchAskUserQuestion
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
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
Product Development loads about 1.1k tokens when it runs. Until then it costs about 74 tokens; SKILL.md has 462 words of instructions outside code blocks.
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 462 words (~1,095 tokens).
“Comprehensive product development guidance for iOS/macOS apps. This skill orchestrates the entire product lifecycle from idea validation to App Store release.”
- name
- product-development
- allowed-tools
- Read, Write, Glob, Grep, WebFetch, WebSearch, AskUserQuestion
Files
SKILL.md and 1 other file in .claude/skills/skills/product of gustavscirulis/snapgrid.
- SKILL.md
- WORKFLOW.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
Product Development 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Product Development this skillgustavscirulis/snapgrid | 117 | 1 repos | ~1.1k | Automated safety check: Pass | Custom licence | |
| App Store Intelligencedylanfeltus/skills | 179 | — | ~2k | Automated safety check: Pass | MIT | |
| Rankupyan-labs/yan-skills | 209 | — | ~5.1k | Automated safety check: Notes | MIT | |
| Site ArchitectureAvdLee/RocketSimApp | 804 | 11 repos | ~3.3k | Automated safety check: Pass | Custom licence | |
| App Store Screenshots GeneratorParthJadhav/app-store-screenshots | 7.2k | — | ~14k | Automated safety check: Pass | MIT | |
| Product Competitive AnalysisFokkyp/claude-skills | 226 | — | ~1.2k | Automated safety check: Pass | None |
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Related
Questions about Product Development
What does Product Development do?
End-to-end product development for iOS/macOS apps. An agent skill from gustavscirulis/snapgrid. Product Development is an agent skill from gustavscirulis/snapgrid. End-to-end product development for iOS/macOS apps.
When should I use Product Development?
Product Development fits situations like: product planning; generating specification documents.
How do I install Product Development in Claude Code?
Run `npx skills add gustavscirulis/snapgrid --skill product-development -a claude-code`. Or copy the skill folder (.claude/skills/skills/product in gustavscirulis/snapgrid) into .claude/skills/product-development in your project. Claude Code loads it when a task matches its description.
How do I install Product Development in Codex?
Run `npx skills add gustavscirulis/snapgrid --skill product-development -a codex`. Or copy the skill folder (.claude/skills/skills/product in gustavscirulis/snapgrid) into .agents/skills/product-development in your project. Codex loads it when a task matches its description.
Can I use Product Development 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 product-development -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/product-development, .gemini/skills/product-development, .github/skills/product-development and .opencode/skills/product-development in your project.
What does Product Development need to run?
SKILL.md names no scripts, command-line tools or credentials: Product Development is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Write, Glob, Grep, WebFetch, WebSearch, AskUserQuestion.
Does Product Development 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 Product Development 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 Product Development use?
Product Development 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 Product Development use?
About 1.1k tokens (SKILL.md is roughly 4.4k 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 Product Development?
Skills that share tags, products or a category with Product Development: App Store Intelligence (dylanfeltus/skills, 179 stars), Rankup (yan-labs/yan-skills, 209 stars), Site Architecture (AvdLee/RocketSimApp, 804 stars) and App Store Screenshots Generator (ParthJadhav/app-store-screenshots, 7.2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Product Development?
gustavscirulis (a GitHub user) maintains it in gustavscirulis/snapgrid, which has 117 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.