rn-harness-plan

rn-harness-plan is a skill for Claude Code from tjdrhs90/rn-launch-harness. It costs 29 tokens per session (1,478 once invoked), scanned A, original, MIT.

A product-planning step that turns market research into a detailed specification for a React Native and Expo mobile app. It describes user stories, screens, app structure, reusable code areas, and the planned API connections.

In plain words
What is it for?
Use it to define an app’s name and purpose, prioritize features, map navigation and modules, write acceptance criteria, and describe how the app communicates with its backend.
Why use it?
It gives development a shared blueprint before code is written. This reduces uncertainty about which features, screens, data, and user actions belong in the first version.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: names the AskUserQuestion tool.

Part of the rn-launch-harness plugin — 17 skills shipped together

Good fit Use it to define an app’s name and purpose, prioritize features, map navigation and modules, write acceptance criteria, and describe how the app communicates with its backend.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/tjdrhs90/rn-launch-harness/rn-harness-plan
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add tjdrhs90/rn-launch-harness --skill rn-harness-plan
Clone the repo
git clone --depth 1 https://github.com/tjdrhs90/rn-launch-harness

Made for: Claude Code.

Or install rn-launch-harness, the plugin that ships this one along with the rest of its 17 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for rn-harness-plan

README.md
[![agentmods](https://agentmods.dev/badge/skills/tjdrhs90/rn-launch-harness/rn-harness-plan/github.svg)](https://agentmods.dev/skills/tjdrhs90/rn-launch-harness/rn-harness-plan)
Your own site
<a href="https://agentmods.dev/skills/tjdrhs90/rn-launch-harness/rn-harness-plan"><img src="https://agentmods.dev/badge/skills/tjdrhs90/rn-launch-harness/rn-harness-plan/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for rn-harness-plan

Your own site · 80×15
<a href="https://agentmods.dev/skills/tjdrhs90/rn-launch-harness/rn-harness-plan"><img src="https://agentmods.dev/badge/skills/tjdrhs90/rn-launch-harness/rn-harness-plan.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,478 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00029 $0.01478
Opus 5 $0.00015 $0.00739
Sonnet 5 $0.00006 $0.00296
Haiku 4.5 $0.00003 $0.00148

Measured 10d ago against content hash 5a399ae1ec44, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

rn-harness-plan scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/rn-harness-plan/SKILL.md · 199 lines

How it starts

The opening of the file, as written. The whole thing — 199 lines — stays where its author put it; the contents beside it link to each section on GitHub.

rn-harness-plan — Phase 2: 기획 (PRD)

시장 조사 결과를 기반으로 상세 기획서(PRD)를 작성한다.

Trigger

오케스트레이터에서 Phase 2로 호출됨.

Input

  • docs/harness/specs/YYYY-MM-DD-research.md (시장 조사)
  • docs/harness/config.md
  • docs/harness/references/ (있으면)

Process

Step 1: 시장 조사 분석

research 산출물을 읽고:

  • MVP 기능 리스트 확인
  • 차별화 전략 확인
  • 기술 타당성 확인

Step 2: PRD 작성

2a. 제품 개요
  • 앱 이름 (가안)
  • 앱 슬러그 (app_slug): 앱 이름을 kebab-case 영문으로 변환. Expo 프로젝트 폴더명 + Bundle ID에 사용.
    • 예: "가계부 앱" → budget-book, "커피 구독" → coffee-tracker
    • AskUserQuestion으로 사용자 확인/수정
  • 한 줄 소개
  • 핵심 가치 제안
  • 타겟 사용자 페르소나 (2~3개)
2b. 유저 스토리

P0/P1/P2 우선순위로 작성:

US-001 [P0]: 사용자는 이메일로 회원가입할 수 있다.
  - 수락 기준: 이메일 형식 검증, 비밀번호 8자 이상, 성공 시 홈 이동
2c. 화면 구조 (Expo Router)
app/
├── _layout.tsx          # Root layout
├── (auth)/
│   ├── _layout.tsx
│   ├── login.tsx
│   └── signup.tsx
├── (tabs)/
│   ├── _layout.tsx
│   ├── index.tsx        # 홈
│   ├── explore.tsx
│   └── profile.tsx
└── (modal)/
    └── settings.tsx
2d. FSD 모듈 맵
src/
├── features/
│   ├── auth/            # 인증
│   ├── home/            # 홈 피드
│   └── profile/         # 프로필
├── entities/
│   ├── user/            # 사용자 도메인
│   └── post/            # 게시물 도메인
├── widgets/
│   └── header/          # 공통 헤더
└── shared/
    ├── api/             # Axios 클라이언트
    ├── config/          # 환경설정, 테마
    ├── lib/             # 유틸리티
    ├── types/           # 공통 타입
    └── ui/              # 공통 컴포넌트
2e. API 설계
POST   /auth/login       # 로그인
POST   /auth/signup      # 회원가입
GET    /users/:id        # 유저 정보
PATCH  /users/:id        # 유저 수정
GET    /posts            # 게시물 목록
POST   /posts            # 게시물 생성
2f. 데이터 모델

주요 엔티티의 필드와 관계 정의.

2g. 광고 배치 전략

AdMob 광고 위치 결정:

  • 배너: 탭 하단 또는 리스트 사이
  • 전면 광고: 화면 전환 시
  • 리워드 광고: 프리미엄 기능 해제
2h. MVP 범위
  • 1차 출시 기능 (P0)
  • 2차 업데이트 기능 (P1)
  • 향후 로드맵 (P2)

Step 3: 사용자 확인

AskUserQuestion으로 PRD 요약 공유:

  • 화면 구조 확인
  • 핵심 기능 확인
  • 광고 배치 확인
  • 수정 요청 반영

Output

docs/harness/plans/YYYY-MM-DD-prd.md:

Read the full file on GitHub · 199 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 10d ago First seen · 199 lines · 29 tokens per session scan A 5a399ae1ec44

Subscribe to this mod's changes

rn-harness-plan is a skill published in the GitHub repository tjdrhs90/rn-launch-harness (9 stars, last pushed 9d ago), licensed MIT. It adds 29 tokens to every session and 1,478 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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