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.
npx agentmods add skills/cenconq25/claude-code-app-studio/brainstormnpx skills add cenconq25/claude-code-app-studio --skill brainstormgit clone --depth 1 https://github.com/cenconq25/claude-code-app-studioWrote 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/cenconq25/claude-code-app-studio/brainstorm)<a href="https://agentmods.dev/skills/cenconq25/claude-code-app-studio/brainstorm"><img src="https://agentmods.dev/badge/skills/cenconq25/claude-code-app-studio/brainstorm.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00064 | $0.02270 |
| Opus 5 | $0.00032 | $0.01135 |
| Sonnet 5 | $0.00013 | $0.00454 |
| Haiku 4.5 | $0.00006 | $0.00227 |
Grade A, and why
brainstorm 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 today.
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 — 244 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Brainstorm — Mobile App Concept
This skill writes one file: design/concept.md. It is collaborative — the user does the deciding; this skill structures the conversation and captures decisions.
Purpose / When to Run
Run when:
- The user picked option A or B in
/start(no idea, or a fuzzy theme) - The user typed
/brainstorm <hint>directly - An existing pitch is too vague to drive
/map-systems
Do not run when a complete concept already exists at design/concept.md — direct the user to /design-review design/concept.md instead.
Inputs
- Argument: either
open(no constraints) or a free-text hint (e.g., "habit tracker", "audio for runners") .claude/docs/technical-preferences.md— to detect platform constraints if pinned- Optional: existing
design/concept.md(if user is iterating on a draft)
Outputs
design/concept.md— concept document with the eight sections listed in Phase 4- Optional update to
production/session-state/active.md
Phase 1: Parse Argument & Pick Mode
If the argument is open (or empty), run open mode — fully unconstrained, the skill must coax a direction out of the user.
If the argument is anything else, treat it as a hint and run directed mode — the hint becomes the seed, and Phase 2 anchors to it.
If design/concept.md already exists, ask:
- Prompt: "A concept doc already exists. What would you like to do?"
- Options:
Iterate on it,Start fresh (back it up first),Cancel
If iterating: read the existing file and treat it as the working draft. Phase 2 questions become "do these still hold?" rather than "what should this be?"
Phase 2: Surface the User's Real Want
Mobile apps live or die on whether they solve a job a real user has on a real day. Spend this phase narrowing to that — do not dive into screens, framework, or monetization yet.
Ask the user, conversationally, three things in sequence (one question at a time, free-text answers — these are not multiple choice):
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.
- today First seen · 244 lines · 64 tokens per session scan A 70ab122193b4
brainstorm is a skill published in the GitHub repository cenconq25/claude-code-app-studio (40 stars, last pushed 4mo ago), licensed MIT. It adds 64 tokens to every session and 2,270 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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