identify-assumptions-existing

phuryn/pm-skills · pm-product-discovery/skills/identify-assumptions-existing/SKILL.md

Identify risky assumptions for a feature idea in an existing product across Value, Usability, Viability, and Feasibility. Uses multi-perspective devil's advocate thinking. Use when stress-testing a feature idea, doing risk assessment, or preparing for assumption mapping.

Product & ResearchNo license★ 25853⑂ 2783commit 18468a9

Install skillView source on GitHub

What this skill does

Identify Assumptions (Existing Product)

Devil's advocate analysis to surface risky assumptions across four risk areas.

Context

You are stress-testing a feature idea for $ARGUMENTS.

If the user provides files (designs, PRDs, research), read them first.

Instructions

The user will describe their product, objective, market segment, and feature idea. Work through these steps:

Think from three perspectives about why this feature might fail:
- Product Manager perspective: Business viability, market fit, strategic alignment
- Designer perspective: Usability, user experience, adoption barriers
- Engineer perspective: Technical feasibility, performance, integration challenges
Identify assumptions across four risk areas:
- Value: Will it create value for customers? Does it solve a real problem?
- Usability: Will users figure out how to use it? Is the learning curve acceptable?
- Viability: Can marketing, sales, finance, and legal support it?
- Feasibility: Can it be built with existing technology? Are there integration risks?
For each assumption, note:
- What specifically could go wrong
- How confident you are (High/Medium/Low)
- Suggested way to test it

Think step by step. Be thorough but constructive — the goal is to strengthen the idea, not kill it.

Installation

Copy a source-pinned command for your client. You run it yourself.

Destination: .claude/skills/identify-assumptions-existing · pinned to the source commit

# Run from your project root
git clone https://github.com/phuryn/pm-skills.git .skillboard-tmp
git -C .skillboard-tmp checkout 18468a95b427e70e258b51389796367c6f684e7d
mkdir -p ".claude/skills"
cp -r ".skillboard-tmp/pm-product-discovery/skills/identify-assumptions-existing" ".claude/skills/"
rm -rf .skillboard-tmp

Review the source before running. This copies files into your project; it is not a one-click install and does not verify runtime safety.

New here? Step-by-step setup – from installing the agent to using the skill

Operating systemAgentI already use Claude Code

1
Install Git
Install Git with your package manager (Debian/Ubuntu shown; use dnf/pacman on others). Official download.
```
sudo apt update && sudo apt install -y git
```
2
Install Claude Code
Requires Node.js 18+. Install the CLI globally: Official docs. (command-line tool)
```
npm install -g @anthropic-ai/claude-code
```

Get the skill, pinned to its exact version

Open a terminal and run these steps (they clone the source, check out the exact commit, and copy the skill into place):

# Run from your project root
git clone https://github.com/phuryn/pm-skills.git .skillboard-tmp
git -C .skillboard-tmp checkout 18468a95b427e70e258b51389796367c6f684e7d
mkdir -p ".claude/skills"
cp -r ".skillboard-tmp/pm-product-discovery/skills/identify-assumptions-existing" ".claude/skills/"
rm -rf .skillboard-tmp

Destination: .claude/skills/identify-assumptions-existing

4
Use it in Claude Code
Open Claude Code in your project. It reads skills from the folder above, so identify-assumptions-existing is now available. Always review the source before using it – static checks cannot prove runtime safety.

Security & Audits

Scanner static-checks@0.1.0 · commit 18468a95b427. Static checks cannot prove runtime safety – review the source and the exact diff before installing. How checks work.

No static rules matched. This is not a safety guarantee.

identify-assumptions-existing

phuryn/pm-skills · pm-product-discovery/skills/identify-assumptions-existing/SKILL.md

Product & ResearchNo license★ 25853⑂ 2783commit 18468a9

Install skillView source on GitHub

What this skill does

Identify Assumptions (Existing Product)

Devil's advocate analysis to surface risky assumptions across four risk areas.

Context

You are stress-testing a feature idea for $ARGUMENTS.

If the user provides files (designs, PRDs, research), read them first.

Instructions

The user will describe their product, objective, market segment, and feature idea. Work through these steps:

Think from three perspectives about why this feature might fail:
- Product Manager perspective: Business viability, market fit, strategic alignment
- Designer perspective: Usability, user experience, adoption barriers
- Engineer perspective: Technical feasibility, performance, integration challenges
Identify assumptions across four risk areas:
- Value: Will it create value for customers? Does it solve a real problem?
- Usability: Will users figure out how to use it? Is the learning curve acceptable?
- Viability: Can marketing, sales, finance, and legal support it?
- Feasibility: Can it be built with existing technology? Are there integration risks?
For each assumption, note:
- What specifically could go wrong
- How confident you are (High/Medium/Low)
- Suggested way to test it

Think step by step. Be thorough but constructive — the goal is to strengthen the idea, not kill it.

Installation

Copy a source-pinned command for your client. You run it yourself.

Destination: .claude/skills/identify-assumptions-existing · pinned to the source commit

# Run from your project root
git clone https://github.com/phuryn/pm-skills.git .skillboard-tmp
git -C .skillboard-tmp checkout 18468a95b427e70e258b51389796367c6f684e7d
mkdir -p ".claude/skills"
cp -r ".skillboard-tmp/pm-product-discovery/skills/identify-assumptions-existing" ".claude/skills/"
rm -rf .skillboard-tmp

Review the source before running. This copies files into your project; it is not a one-click install and does not verify runtime safety.

New here? Step-by-step setup – from installing the agent to using the skill

Operating systemAgentI already use Claude Code

1
Install Git
Install Git with your package manager (Debian/Ubuntu shown; use dnf/pacman on others). Official download.
```
sudo apt update && sudo apt install -y git
```
2
Install Claude Code
Requires Node.js 18+. Install the CLI globally: Official docs. (command-line tool)
```
npm install -g @anthropic-ai/claude-code
```

Get the skill, pinned to its exact version

Open a terminal and run these steps (they clone the source, check out the exact commit, and copy the skill into place):

# Run from your project root
git clone https://github.com/phuryn/pm-skills.git .skillboard-tmp
git -C .skillboard-tmp checkout 18468a95b427e70e258b51389796367c6f684e7d
mkdir -p ".claude/skills"
cp -r ".skillboard-tmp/pm-product-discovery/skills/identify-assumptions-existing" ".claude/skills/"
rm -rf .skillboard-tmp

Destination: .claude/skills/identify-assumptions-existing

4
Use it in Claude Code
Open Claude Code in your project. It reads skills from the folder above, so identify-assumptions-existing is now available. Always review the source before using it – static checks cannot prove runtime safety.

Security & Audits

Scanner static-checks@0.1.0 · commit 18468a95b427. Static checks cannot prove runtime safety – review the source and the exact diff before installing. How checks work.

No static rules matched. This is not a safety guarantee.

identify-assumptions-existing

What this skill does

Identify Assumptions (Existing Product)

Context

Instructions

Further Reading

Installation

Install Git

Install Claude Code

Get the skill, pinned to its exact version

Use it in Claude Code

Security & Audits

identify-assumptions-existing

What this skill does

Identify Assumptions (Existing Product)

Context

Instructions

Further Reading

Installation

Install Git

Install Claude Code

Get the skill, pinned to its exact version

Use it in Claude Code

Security & Audits