identify-assumptions-existing
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.
Profile →npx skills add phuryn/pm-skills --skill identify-assumptions-existing --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
## 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: 1. **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 2. **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? 3. **For each assumption**, note: - What specifically could go wrong - How confident you are (High/Medium/Low) -
- Identify Assumptions (Existing Product)
- Context
- Instructions
- Further Reading
What does the identify-assumptions-existing skill do?
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.
How do I install it?
Run `npx skills add phuryn/pm-skills --skill identify-assumptions-existing --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From phuryn/pm-skills, a repository with 24,843 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.