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 skills add yuusakuri/agent-skills --skill brainstorm-ideas-newgit clone --depth 1 https://github.com/yuusakuri/agent-skillsWrote 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/yuusakuri/agent-skills/brainstorm-ideas-new)<a href="https://agentmods.dev/skills/yuusakuri/agent-skills/brainstorm-ideas-new"><img src="https://agentmods.dev/badge/skills/yuusakuri/agent-skills/brainstorm-ideas-new/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/yuusakuri/agent-skills/brainstorm-ideas-new"><img src="https://agentmods.dev/badge/skills/yuusakuri/agent-skills/brainstorm-ideas-new.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00049 | $0.00492 |
| Opus 5 | $0.00024 | $0.00246 |
| Sonnet 5 | $0.00010 | $0.00098 |
| Haiku 4.5 | $0.00005 | $0.00049 |
Grade A, and why
brainstorm-ideas-new 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 11d 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 — 47 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Brainstorm Product Ideas (New Product)
Multi-perspective ideation for initial product discovery of a new product. Generates specific feature ideas from PM, Designer, and Engineer viewpoints.
Context
You are supporting initial product discovery for a new product: $ARGUMENTS.
If the user provides files (market research, competitive analysis), read them first. Use web search to understand the market if needed.
Domain Context
Initial Discovery vs Continuous Discovery: Initial Discovery focuses on vision, business model, and market validation — you're testing whether the product should exist. Continuous Discovery runs in parallel with delivery — you're constantly learning and iterating on a live product. This skill is for initial discovery.
Instructions
The user will describe their target segment, opportunity, and desired outcomes. Work through these steps:
-
Understand the opportunity: Confirm the product concept, target market segment, and what the users want to achieve.
-
Ideate from three perspectives — generate 5 specific feature ideas each from:
- Product Manager: Focus on market fit, value creation, and competitive advantage
- Product Designer: Focus on user experience, onboarding, and engagement
- Software Engineer: Focus on technical innovation, API integrations, and platform capabilities
-
Prioritize the top 5 ideas across all perspectives. For a new product, weight heavily toward:
- Core value delivery (does it solve the primary problem?)
- Speed to validate (can we test this quickly?)
- Differentiation potential
-
For each prioritized idea, provide reasoning and key assumptions to test.
Think step by step. Save substantial output as a markdown document.
Further Reading
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.
- 11d ago First seen · 47 lines · 49 tokens per session scan A 400e5e0760d6
brainstorm-ideas-new is a skill published in the GitHub repository yuusakuri/agent-skills (2 stars, last pushed 4d ago), licensed MIT. It adds 49 tokens to every session and 492 once invoked, about $0.0002 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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