product-wisdom

product-wisdom is a skill for Claude Code from stonegiantstudio/skills. It costs 85 tokens per session (903 once invoked), scanned B, original, Apache-2.0.

A set of product-management ideas and frameworks drawn from Lenny’s Podcast, covering user activation, positioning, discovery, and product risks.

In plain words
What is it for?
Use it to discuss onboarding, retention, prioritisation, roadmaps, feature scope, customer research, messaging, and team decisions.
Why use it?
It gives structure to product decisions when a team is unsure what to build, who it is for, or why users are not staying.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the stone-giant plugin — 36 skills shipped together

Good fit Use it to discuss onboarding, retention, prioritisation, roadmaps, feature scope, customer research, messaging, and team decisions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/stonegiantstudio/skills/product-wisdom
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 stonegiantstudio/skills --skill product-wisdom
Clone the repo
git clone --depth 1 https://github.com/stonegiantstudio/skills

Made for: Claude Code.

Or install stone-giant, the plugin that ships this one along with the rest of its 36 skills.

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.

agentmods badge for product-wisdom

README.md
[![agentmods](https://agentmods.dev/badge/skills/stonegiantstudio/skills/product-wisdom/github.svg)](https://agentmods.dev/skills/stonegiantstudio/skills/product-wisdom)
Your own site
<a href="https://agentmods.dev/skills/stonegiantstudio/skills/product-wisdom"><img src="https://agentmods.dev/badge/skills/stonegiantstudio/skills/product-wisdom/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.

agentmods 80×15 button for product-wisdom

Your own site · 80×15
<a href="https://agentmods.dev/skills/stonegiantstudio/skills/product-wisdom"><img src="https://agentmods.dev/badge/skills/stonegiantstudio/skills/product-wisdom.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 85 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 903 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00085 $0.00903
Opus 5 $0.00043 $0.00451
Sonnet 5 $0.00017 $0.00181
Haiku 4.5 $0.00009 $0.00090

Measured 11d ago against content hash 95a9e6411c65, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade B, and why

product-wisdom scanned grade B with 1 finding 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.

Strips warnings and disclaimersmediumAnti-refusal

Omitting safety caveats hides risk from the user and is a common jailbreak preamble.

2. **Surface the relevant framework** — don't lecture, apply it to their context
plugins/stone-giant/skills/product-wisdom/SKILL.md · 97 lines

How it starts

The opening of the file, as written. The whole thing — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Product Wisdom

Condensed insights from top product leaders. Apply these frameworks when helping with product decisions.

Core Frameworks

Activation: Get Users to Value Fast

The magic moment matters more than features. Find yours:

  • Slack: 2,000 messages exchanged = team is hooked
  • Gamma: 30 seconds to first presentation = user activated

Apply when: Discussing onboarding, retention, or "users aren't sticking"

Positioning (April Dunford's 5 Steps)

Start with competitive alternatives, not messaging:

  1. What would customers use if you didn't exist?
  2. What's your unique capability?
  3. What value does that capability enable?
  4. Who cares most about that value?
  5. What market context makes this obvious?

Apply when: Go-to-market, messaging, or "how do we differentiate"

Product Discovery (Teresa Torres + Marty Cagan)

Talk to customers weekly, not quarterly. Use Opportunity Solution Trees:

  • Desired outcome → Opportunities → Solutions → Experiments

Validate Four Risks before building:

  1. Value risk: Will customers buy/use it?
  2. Usability risk: Can they figure it out?
  3. Feasibility risk: Can we build it?
  4. Viability risk: Does it work for our business?

Apply when: Deciding what to build, validating ideas

Prioritization (Shreyas Doshi's LNO)

Categorize tasks by type, not just impact:

  • Leverage: 10x returns, deserves 10x effort
  • Neutral: Standard work, standard effort
  • Overhead: Minimize time, just get it done

Focus on opportunity cost, not ROI. What are you NOT doing?

Apply when: Roadmap planning, sprint planning, "we can't do everything"

Team Structure

Give teams problems to solve, not features to build. Empowered teams vs. feature factories.

Small teams win: Jason Fried's 2-person/6-week constraints. Shopify's pair programming. Companies produce MORE after layoffs—coordination overhead is the silent killer.

Apply when: Team org, hiring decisions, "we need more people"

Pre-Mortems (Shreyas Doshi)

Read the full file on GitHub · 97 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.

  1. 11d ago First seen · 97 lines · 85 tokens per session scan B 95a9e6411c65

Subscribe to this mod's changes

product-wisdom is a skill published in the GitHub repository stonegiantstudio/skills (2 stars, last pushed 6d ago), licensed Apache-2.0. It adds 85 tokens to every session and 903 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it B with 1 finding (strips warnings and disclaimers). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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