Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/rshankras/claude-code-apple-skillsnpx agentmods add skills/rshankras/claude-code-apple-skills/app-plannerWrote 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.
[](https://agentmods.dev/skills/rshankras/claude-code-apple-skills/app-planner)<a href="https://agentmods.dev/skills/rshankras/claude-code-apple-skills/app-planner"><img src="https://agentmods.dev/badge/skills/rshankras/claude-code-apple-skills/app-planner/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.
<a href="https://agentmods.dev/skills/rshankras/claude-code-apple-skills/app-planner"><img src="https://agentmods.dev/badge/skills/rshankras/claude-code-apple-skills/app-planner.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Agent Snooping · line 61 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00058 | $0.15972 |
| Opus 5 | $0.00029 | $0.07986 |
| Sonnet 5 | $0.00012 | $0.03194 |
| Haiku 4.5 | $0.00006 | $0.01597 |
Grade A, and why
app-planner 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 5d 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.
How it starts
The opening of the file, as written. The whole thing — 2,472 lines — stays where its author put it; the contents beside it link to each section on GitHub.
App Planner Skill
Comprehensive guide for planning iOS/Swift applications and analyzing existing apps, covering product, technical, UI/UX, and distribution considerations.
When This Skill Activates
Use this skill when the user:
For New Apps:
- Wants to plan a new iOS/Swift app from scratch
- Asks about app planning, architecture planning, or project setup
- Needs help defining features, requirements, or technical stack
- Wants to create a comprehensive app plan or design document
- Asks "what should I consider when building a new app?"
For Existing Apps:
- Wants to analyze or audit their current iOS app
- Asks to "run through my existing app"
- Needs architecture evaluation or recommendations
- Wants tech stack assessment
- Planning major refactoring or improvements
- Evaluating app health and identifying gaps
Planning Process
1. Understand Project Context
First, determine if this is a new app or existing app, then gather context:
App Status:
- New app (planning from scratch)
- Existing app (analyze/improve)
For NEW Apps - gather:
- Project Type: Personal, client, startup, learning
- Current Stage: Just an idea, have requirements, have designs, technical only
- Scope: Full planning, feature planning, architecture only, tech stack only
For EXISTING Apps - gather:
- Project Type: Personal, client, startup, enterprise
- App Age: How long in development/production
- Codebase Size: Small (<10 screens), medium (10-30), large (30+)
- Current Issues: Performance, maintainability, feature additions, technical debt
- Analysis Scope: Full audit, architecture review, tech stack evaluation, specific area
- Existing Tech Stack: SwiftUI/UIKit, architecture pattern, persistence layer
- Pain Points: What's not working well, what needs improvement
Then proceed to appropriate workflow:
- New App → Continue to "Planning Phases for New Apps" (Section 3)
- Existing App → Jump to "Analysis Process for Existing Apps" (Section 6)
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 5d ago First seen · 2,472 lines · 58 tokens per session scan A 908b17abbc48
app-planner is a skill published in the GitHub repository rshankras/claude-code-apple-skills (710 stars, last pushed 1mo ago), licensed MIT. It adds 58 tokens to every session and 15,972 once invoked, about $0.0003 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 2026-09-03.
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