A first-session guide for a mobile app project. It checks the project's current documents and code, asks where you are starting, and directs you to the appropriate next step.

Use it to begin work on a new project, re-orient yourself after returning, or choose a review mode.

It helps a new or returning contributor understand the project's state without already knowing its framework or workflow.

start — Skill for Claude Code by cenconq25/claude-code-app-studio

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 cenconq25/claude-code-app-studio --skill start

Clone the repo

git clone --depth 1 https://github.com/cenconq25/claude-code-app-studio

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/cenconq25/claude-code-app-studio/start/github.svg)](https://agentmods.dev/skills/cenconq25/claude-code-app-studio/start)

Your own site

<a href="https://agentmods.dev/skills/cenconq25/claude-code-app-studio/start"><img src="https://agentmods.dev/badge/skills/cenconq25/claude-code-app-studio/start/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/cenconq25/claude-code-app-studio/start"><img src="https://agentmods.dev/badge/skills/cenconq25/claude-code-app-studio/start.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,201 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.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00051	$0.02201
Opus 5.5	$0.00020	$0.00880
Sonnet 5.5	$0.00010	$0.00440
Haiku 4.5	$0.00005	$0.00220

Measured 1mo ago against content hash e7cc9d87a7bb, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

start 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 1mo 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.

.claude/skills/start/SKILL.md · 212 lines

How it starts

The opening of the file, as written. The whole thing — 212 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Guided Onboarding (Mobile App Studio)

Single file written by this skill: production/review-mode.txt (only when the user picks a review mode in Phase 3b).

This is the entry point. It assumes nothing — not the framework, not the idea, not the user's experience level. It looks at what is on disk, asks the user where they are, then hands off.

Purpose / When to Run

Run when:

The repo has just been cloned and nothing has been authored yet
The user types /start to re-orient
A returning collaborator wants a clean route into the right next step

Do not run when the project is mid-sprint and the user has a clear active task — /help or /sprint-status are better.

Inputs

.claude/docs/technical-preferences.md — to detect whether a framework has been pinned
design/concept.md — concept doc presence
design/prd/ — PRD count
production/review-mode.txt — existing review-mode setting
production/sprints/ and production/epics/ — production-stage signal
src/, ios/, android/, lib/ — code presence

Outputs

production/review-mode.txt — only written if not present and the user makes a choice in Phase 3b

Phase 1: Silent State Probe

Do this without narrating. The findings only inform recommendations; they are not the conversation opener.

Check:

Framework configured? Read .claude/docs/technical-preferences.md. If the Framework field still contains [TO BE CONFIGURED], the framework is not pinned.
Concept exists? Glob for design/concept.md.
PRDs exist? Count files matching design/prd/*.md.
Source code present? Glob for any of: src/**/*.ts, src/**/*.tsx, lib/**/*.dart, ios/**/*.swift, app/src/main/**/*.kt, **/*.swift excluding Pods.
Production work in flight? Count files in production/sprints/ and production/epics/.
Review mode set? Glob production/review-mode.txt.

Hold these as facts to validate the user's self-assessment in Phase 4.

Phase 2: Ask Where the User Is

Read the full file on GitHub · 212 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.

1mo ago First seen · 212 lines · 51 tokens per session scan A e7cc9d87a7bb

Subscribe to this mod's changes

start is a skill published in the GitHub repository cenconq25/claude-code-app-studio (42 stars, last pushed 5mo ago), licensed MIT. It adds 51 tokens to every session and 2,201 once invoked, about $0.0002 per session on Opus 5.5. 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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