What is brainstorm-ideas-existing?

A structured idea-generation process for improving an existing product, using product manager, designer, and engineer viewpoints.

Use it to brainstorm features, explore solutions, and connect opportunities to possible solutions and experiments.

It gives a product team several ways to address an opportunity and helps narrow them to the five strongest ideas.

brainstorm-ideas-existing — Skill for Claude Code by yuusakuri

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 yuusakuri/agent-skills --skill brainstorm-ideas-existing

Clone the repo

git clone --depth 1 https://github.com/yuusakuri/agent-skills

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/yuusakuri/agent-skills/brainstorm-ideas-existing/github.svg)](https://agentmods.dev/skills/yuusakuri/agent-skills/brainstorm-ideas-existing)

Your own site

<a href="https://agentmods.dev/skills/yuusakuri/agent-skills/brainstorm-ideas-existing"><img src="https://agentmods.dev/badge/skills/yuusakuri/agent-skills/brainstorm-ideas-existing/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/yuusakuri/agent-skills/brainstorm-ideas-existing"><img src="https://agentmods.dev/badge/skills/yuusakuri/agent-skills/brainstorm-ideas-existing.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 611 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 100% copy Near-identical to another mod 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	$0.00611
Opus 5.5	$0.00020	$0.00244
Sonnet 5.5	$0.00010	$0.00122
Haiku 4.5	$0.00005	$0.00061

Measured 2mo ago against content hash cf950494541b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

brainstorm-ideas-existing 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 2mo 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.

Origin

This is a copy

100% identical to brainstorm-ideas-existing — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/brainstorm-ideas-existing/SKILL.md · 55 lines

How it starts

The opening of the file, as written. The whole thing — 55 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Brainstorm Product Ideas (Existing Product)

Multi-perspective ideation for continuous product discovery. Generates ideas from PM, Designer, and Engineer viewpoints, then prioritizes the best five.

Context

You are supporting a product trio performing continuous product discovery for $ARGUMENTS.

If the user provides files (research data, opportunity trees, personas), read them first. If they mention a product URL, use web search to understand the product.

Domain Context

Product Trio (Teresa Torres, Continuous Discovery Habits): PM + Designer + Engineer collaborate on discovery together. "Best ideas often come from engineers." Discovery is not linear — loop back if experiments fail. Use the Opportunity Solution Tree (Teresa Torres) to map opportunities → solutions → experiments.

Instructions

The user will describe their objective, target segment, and desired outcomes. Work through these steps:

Understand the opportunity: Confirm the product, objective, market segment, and desired outcomes. Ask for clarification if anything is ambiguous.
Ideate from three perspectives — generate 5 ideas each from:
- Product Manager: Focus on business value, strategic alignment, and customer impact
- Product Designer: Focus on user experience, usability, and delight
- Software Engineer: Focus on technical possibilities, data leverage, and scalable solutions
Prioritize the top 5 ideas across all perspectives based on:
- Strategic alignment with the stated objective
- Potential impact on desired outcomes
- Feasibility and effort required
- Differentiation from existing solutions
For each prioritized idea, provide:
- A clear name and one-sentence description
- Why it was selected (reasoning)
- Key assumptions to validate

Think step by step. Present ideas in a clear, structured format.

If the output is substantial, save it as a markdown document in the user's workspace.

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.

2mo ago First seen · 55 lines · 51 tokens per session scan A cf950494541b

Subscribe to this mod's changes

brainstorm-ideas-existing is a skill published in the GitHub repository yuusakuri/agent-skills (2 stars, last pushed 14d ago), licensed MIT. It adds 51 tokens to every session and 611 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to brainstorm-ideas-existing, differing in 0 lines, and is treated as a copy.

Creative and media Planning

brainstorm-ideas-existing next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
brainstorm-ideas-existingyuusakuri/agent-skills	Skill	2	14d ago	MIT	A	51	Claude Code
imagegenopenai/codex	Skill	133k	yesterday	Apache-2.0	A	113	Codex
playwright-climicrosoft/playwright	Skill	99k	yesterday	Apache-2.0	A	19	Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginners	Skill	79k	4d ago	MIT	A	200	Claude Code, Codex
systematic-debuggingobra/superpowers	Skill	313k	3d ago	MIT	A	21	Claude Code
next-cache-components-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	95	Claude Code
next-partial-prefetching-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	103	Claude Code

brainstorm-ideas-existing