phuryn/pm-skills is a marketplace of reusable skills, commands, and plugins that guide AI assistants through product-management work such as discovery, strategy, planning, metrics, launches, and growth. It is for product managers and teams using Claude Code, Cowork, or compatible assistants. The catalogue entries are the project's own workflows and extensions.
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 phuryn/pm-skills --skill brainstorm-ideas-existinggit clone --depth 1 https://github.com/phuryn/pm-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/phuryn/pm-skills/brainstorm-ideas-existing)<a href="https://agentmods.dev/skills/phuryn/pm-skills/brainstorm-ideas-existing"><img src="https://agentmods.dev/badge/skills/phuryn/pm-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.
<a href="https://agentmods.dev/skills/phuryn/pm-skills/brainstorm-ideas-existing"><img src="https://agentmods.dev/badge/skills/phuryn/pm-skills/brainstorm-ideas-existing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk warn
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 |
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 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- brainstorm-ideas-existing — 100% identical, 0 lines differ
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.
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.
- 1mo ago First seen · 55 lines · 51 tokens per session scan A cf950494541b
brainstorm-ideas-existing is a skill published in the GitHub repository phuryn/pm-skills (27,719 stars, last pushed 8d 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. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-15.
brainstorm-ideas-existing compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| brainstorm-ideas-existingphuryn/pm-skills | Skill | 28k | 8d ago | MIT | A | 51 | Claude Code |
| becoming-senior-pmProductfculty-aipm/PM-Copilot-by-Product-Faculty | Skill | 80 | 6mo ago | none | A | 126 | Claude Code |
| founding-pmProductfculty-aipm/PM-Copilot-by-Product-Faculty | Skill | 80 | 6mo ago | none | A | 106 | Claude Code |
| technical-pmProductfculty-aipm/PM-Copilot-by-Product-Faculty | Skill | 80 | 6mo ago | none | A | 109 | Claude Code |
| ai-feature-monetizationProductfculty-aipm/PM-Copilot-by-Product-Faculty | Skill | 80 | 6mo ago | none | A | 89 | Claude Code |
| altitude-horizonProductfculty-aipm/PM-Copilot-by-Product-Faculty | Skill | 80 | 6mo ago | none | A | 85 | Claude Code |
| attitudinal-segmentationProductfculty-aipm/PM-Copilot-by-Product-Faculty | Skill | 80 | 6mo ago | none | A | 83 | Claude Code |