React Native Best Practices
vercel-labs/openreview
A prioritized rule set for React Native and Expo apps covering list performance, animation, navigation, UI patterns, state, rendering, monorepos and configuration.
Apply when designing types, reviewing a function signature, or writing code in any statically-typed language.
Install Principle Type System Discipline
$ npx skills add cursor/plugins --skill principle-type-system-discipline -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install cursor/plugins principle-type-system-discipline --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/cursor/plugins.git skills-src && mkdir -p .claude/skills && cp -r skills-src/pstack/skills/principle-type-system-discipline .claude/skills/principle-type-system-discipline && 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 "principle-type-system-discipline" agent skill from https://github.com/cursor/plugins/tree/main/pstack/skills/principle-type-system-discipline into .claude/skills/principle-type-system-discipline/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "principle-type-system-discipline", 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/cursor/plugins/tree/main/pstack/skills/principle-type-system-disciplineType 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 cursor/plugins --skill principle-type-system-discipline -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install cursor/plugins principle-type-system-discipline --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cursor/plugins.git skills-src && mkdir -p .agents/skills && cp -r skills-src/pstack/skills/principle-type-system-discipline .agents/skills/principle-type-system-discipline && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "principle-type-system-discipline" agent skill from https://github.com/cursor/plugins/tree/main/pstack/skills/principle-type-system-discipline into .agents/skills/principle-type-system-discipline/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "principle-type-system-discipline", 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 cursor/plugins --skill principle-type-system-discipline -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install cursor/plugins principle-type-system-discipline --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cursor/plugins.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/pstack/skills/principle-type-system-discipline .cursor/skills/principle-type-system-discipline && 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 "principle-type-system-discipline" agent skill from https://github.com/cursor/plugins/tree/main/pstack/skills/principle-type-system-discipline into .cursor/skills/principle-type-system-discipline/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "principle-type-system-discipline", 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/cursor/plugins.git --path pstack/skills/principle-type-system-discipline--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 cursor/plugins --skill principle-type-system-discipline -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install cursor/plugins principle-type-system-discipline --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cursor/plugins.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/pstack/skills/principle-type-system-discipline .gemini/skills/principle-type-system-discipline && 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 "principle-type-system-discipline" agent skill from https://github.com/cursor/plugins/tree/main/pstack/skills/principle-type-system-discipline into .gemini/skills/principle-type-system-discipline/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "principle-type-system-discipline", 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 cursor/plugins principle-type-system-disciplineInstalls 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 cursor/plugins --skill principle-type-system-discipline -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/cursor/plugins.git skills-src && mkdir -p .github/skills && cp -r skills-src/pstack/skills/principle-type-system-discipline .github/skills/principle-type-system-discipline && 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 "principle-type-system-discipline" agent skill from https://github.com/cursor/plugins/tree/main/pstack/skills/principle-type-system-discipline into .github/skills/principle-type-system-discipline/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "principle-type-system-discipline", 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 cursor/plugins --skill principle-type-system-discipline -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install cursor/plugins principle-type-system-discipline --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cursor/plugins.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/pstack/skills/principle-type-system-discipline .opencode/skills/principle-type-system-discipline && 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 "principle-type-system-discipline" agent skill from https://github.com/cursor/plugins/tree/main/pstack/skills/principle-type-system-discipline into .opencode/skills/principle-type-system-discipline/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "principle-type-system-discipline", 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
principle-type-system-discipline- GitHub stars
- 10k
- Used in
- 8 other repos
- Token cost
- ~1.2k tokens
- SKILL.md length
- 704 words
- Files
- 1
- Skills in repo
- 99
- Repo updated
- First seen
- Licence
- None found
At a glance
Apply when designing types, reviewing a function signature, or writing code in any statically-typed language.
- Mobile work in your project
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Principle Type System Discipline is an agent skill from cursor/plugins, published by the product's own GitHub organization. Apply when designing types, reviewing a function signature, or writing code in any statically-typed language. Make illegal states unrepresentable, brand semantic primitives, parse external data at boundaries, refuse to lie to the compiler, exhaust variants, derive from authoritative schemas.
Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Mobile. The repository describes itself as: Cursor plugin specification and official plugins.
When your agent uses it
- Mobile work in your project
Example prompts
- “/principle-type-system-discipline”
What it can do on your machine
Read from SKILL.md and the folder at commit ccb5507. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
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
Principle Type System Discipline loads about 1.2k tokens when it runs. Until then it costs about 81 tokens; SKILL.md has 704 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
Without a licence we can't republish the file, so here is its outline and opening line. It has 704 words (~1,231 tokens).
“The type checker is a proof assistant. Use it to eliminate impossible states, mismatched primitives, and unhandled variants at compile time. A case the types let you ignore becomes a runtime failure the compiler could have stopped. Prefer defining errors…”
- name
- principle-type-system-discipline
- disable-model-invocation
- true
Files
Just SKILL.md in pstack/skills/principle-type-system-discipline of cursor/plugins.
Open the folder on GitHubat commit ccb5507
Used in 8 other repositories
We found 8 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 8 other GitHub owners. This page covers the copy in cursor/plugins, which our catalogue first saw on October 7, 2026.
- chmonitor/chmonitor.claude/skills/pstack/upstream/skills/principle-type-system-discipline
- Sma1lboy/rove.agents/skills/pstack/skills/principle-type-system-discipline
- michael-denyer/pstack-claudeplugins/pstack/skills/principle-type-system-discipline
- backnotprop/pstackskills/principle-type-system-discipline
- tellahq/opensession.agents/skills/pstack-suite/skills/principle-type-system-discipline
- am-will/gooey-pi.agents/skills/pstack/principle-type-system-discipline
- jtaroreh/agystackskills/principle-type-system-discipline
- uzairansaruzi/p3-stackskills/principle-type-system-discipline
Compare with similar skills
Principle Type System Discipline 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 |
|---|---|---|---|---|---|---|
| Principle Type System Discipline this skillcursor/plugins | 10k | 8 repos | ~1.2k | Automated safety check: Pass | None | |
| React Native Best Practicesvercel-labs/openreview | 1.7k | 17 repos | ~1.1k | Automated safety check: Pass | MIT | |
| Swiftui Protwostraws/SwiftUI-Agent-Skill | 5.1k | 2 repos | ~1.5k | Automated safety check: Pass | MIT | |
| Kortix Brandkortix-ai/suna | 20k | — | ~4k | Automated safety check: Pass | Custom licence | |
| Ip As LogoKartikLabhshetwar/better-shot | 2.4k | 1 repos | ~4.3k | Automated safety check: Pass | MIT | |
| Compose Multiplatform Patternsmonta-app/ocpp-emulator | 180 | 5 repos | ~2k | Automated safety check: Pass | Apache-2.0 |
Similar skills
- Official
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Comprehensively reviews SwiftUI code for best practices on modern APIs, maintainability, and performance.
Kortix Brand
kortix-ai/suna
Load FIRST for anything that carries the Kortix look or voice: product or mobile UI, copy of any kind, decks, social, images, email, CLI output, anything with the logo, and reviews of these.
Ip As Logo
KartikLabhshetwar/better-shot
Generate extremely simple, cute, personified square character images with rounded heavy forms, two purposeful character colors, one solid background color, and a dominant lower-corner composition.
Compose Multiplatform Patterns
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Compose Multiplatform and Jetpack Compose patterns for KMP projects — state management, navigation, theming, performance, and platform-specific UI.
Aso Appstore Screenshots
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Generate high-converting App Store screenshots by analyzing your app's codebase, discovering core benefits, and creating ASO-optimized screenshot images using Nano Banana Pro.
More from cursor/plugins
All 99 skills in this repo- Official
Show Me Your Work Decision Log
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Keeps a TSV decision log for long or unattended agent runs, one row per decision with what, why, evidence and result, so a reviewer can check the work later.
- Official
Code Design Rationale Investigator
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Digs into why code is shaped the way it is by checking git history, pull requests and connected tools in parallel, then reporting a cited read on the tradeoffs.
- Official
Reflect on Session Learnings
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Starts three parallel reviewer subagents over the current conversation transcript, then turns their findings into concrete edits to existing skills.
- Official
Technical Writing Standard
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Applies four layers of technical-writing rules to docs, RFCs, readmes, PR descriptions and commit messages so a tired engineer follows them on the first read.
- Official
Advisor Mode
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Adds a second, stronger model that the main agent consults before major decisions, when stuck and before finishing, controlled by /advisor commands.
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Make PR Easy To Review
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Related
Categories
Questions about Principle Type System Discipline
What does Principle Type System Discipline do?
Apply when designing types, reviewing a function signature, or writing code in any statically-typed language. Principle Type System Discipline is an agent skill from cursor/plugins, published by the product's own GitHub organization. Apply when designing types, reviewing a function signature, or writing code in any statically-typed language.
When should I use Principle Type System Discipline?
Principle Type System Discipline fits situations like: mobile work in your project.
How do I install Principle Type System Discipline in Claude Code?
Run `npx skills add cursor/plugins --skill principle-type-system-discipline -a claude-code`. Or copy the skill folder (pstack/skills/principle-type-system-discipline in cursor/plugins) into .claude/skills/principle-type-system-discipline in your project. Claude Code loads it when a task matches its description.
How do I install Principle Type System Discipline in Codex?
Run `npx skills add cursor/plugins --skill principle-type-system-discipline -a codex`. Or copy the skill folder (pstack/skills/principle-type-system-discipline in cursor/plugins) into .agents/skills/principle-type-system-discipline in your project. Codex loads it when a task matches its description.
Can I use Principle Type System Discipline 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 cursor/plugins --skill principle-type-system-discipline -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/principle-type-system-discipline, .gemini/skills/principle-type-system-discipline, .github/skills/principle-type-system-discipline and .opencode/skills/principle-type-system-discipline in your project.
What does Principle Type System Discipline need to run?
SKILL.md names no scripts, command-line tools or credentials: Principle Type System Discipline is instructions for the agent only.
Does Principle Type System Discipline 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 Principle Type System Discipline 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 Principle Type System Discipline use?
No licence was found for Principle Type System Discipline or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Principle Type System Discipline use?
About 1.2k tokens (SKILL.md is roughly 4.9k 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 Principle Type System Discipline?
Skills that share tags, products or a category with Principle Type System Discipline: React Native Best Practices (vercel-labs/openreview, 1.7k stars), Swiftui Pro (twostraws/SwiftUI-Agent-Skill, 5.1k stars), Kortix Brand (kortix-ai/suna, 20k stars) and Ip As Logo (KartikLabhshetwar/better-shot, 2.4k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Principle Type System Discipline?
cursor (a GitHub organization, an official publisher) maintains it in cursor/plugins, which has 10,278 GitHub stars. The repository holds 99 skills in this directory. The repository was last updated on October 8, 2026.
Source: cursor/plugins on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.