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Agent skill

Identify Assumptions New

by phuryn in phuryn/pm-skills

Identify risky assumptions for a new product idea across 8 risk categories including Go-to-Market, Strategy, and Team.

MITAuto-check passedMarketing & SEO

Install Identify Assumptions New

skills CLI
$ npx skills add phuryn/pm-skills --skill identify-assumptions-new -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install phuryn/pm-skills identify-assumptions-new --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/phuryn/pm-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/pm-product-discovery/skills/identify-assumptions-new .claude/skills/identify-assumptions-new && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
identify-assumptions-new
GitHub stars
27k
Token cost
~807 tokens
SKILL.md length
396 words
Files
1
Skills in repo
67
Repo updated
First seen
Licence
MIT

At a glance

Identify risky assumptions for a new product idea across 8 risk categories including Go-to-Market, Strategy, and Team.

  • Works in 3 steps: Think from three perspectives about why… → Identify assumptions across 8 risk… → For each assumption, rate confidence and…
  • Evaluating startup risks
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Assessing a new product concept

What it does

Identify Assumptions New is an agent skill from phuryn/pm-skills. Identify risky assumptions for a new product idea across 8 risk categories including Go-to-Market, Strategy, and Team. Use when evaluating startup risks, assessing a new product concept, or mapping assumptions for a new venture.

Its SKILL.md is about 810 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Marketing & SEO, covering Go-to-market strategy. The repository describes itself as: PM Skills Marketplace: 100+ agentic skills, commands, and plugins — from discovery to strategy, execution, launch, and growth. The licence is MIT.

When your agent uses it

  • Evaluating startup risks
  • Assessing a new product concept
  • Mapping assumptions for a new venture

Example prompts

  • “/identify-assumptions-new”

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

  1. Think from three perspectives about why this product might fail
  2. Identify assumptions across 8 risk categories
  3. For each assumption, rate confidence and suggest a test.

What it can do on your machine

Read from SKILL.md and the folder at commit 6058e29. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • productcompass.pm

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Identify Assumptions New loads about 807 tokens when it runs. Until then it costs about 63 tokens; SKILL.md has 396 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~63
When it runs · the whole SKILL.md, loaded when a task matches
~807

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from phuryn/pm-skills at commit 6058e29, republished under its MIT licence (© phuryn). 396 words, ~807 tokens.

Download SKILL.mdSave it as .claude/skills/identify-assumptions-new/SKILL.md (or your agent's skills folder).
name
identify-assumptions-new
description
Identify risky assumptions for a new product idea across 8 risk categories including Go-to-Market, Strategy, and Team. Use when evaluating startup risks, assessing a new product concept, or mapping assumptions for a new venture.

Identify Assumptions (New Product)

Comprehensive risk identification across 8 categories — extending the 4 core product risks (Teresa Torres, Continuous Discovery Habits) with Ethics, Go-to-Market, Strategy & Objectives, and Team risks that are critical for new products.

Context

You are evaluating assumptions for a new product: $ARGUMENTS.

If the user provides files (business plans, research), read them first.

Domain Context

The 4 core product risks (Teresa Torres, Continuous Discovery Habits): Value, Usability, Viability, Feasibility.

For new products, extend to 8 risk categories. Good teams assume at least three-quarters of their ideas won't perform as they hope.

Instructions

The user will describe the product concept, target segment, and feature idea. Work through these steps:

  1. Think from three perspectives about why this product might fail:

    • Product Manager: Market demand, willingness to pay, competitive landscape
    • Designer: First-time user experience, onboarding, engagement
    • Engineer: Build vs. buy decisions, scalability, technical debt

  2. Identify assumptions across 8 risk categories:

    • Value: Will it create value for customers? Will they keep using it?
    • Usability: Will people figure out how to use it? Can we onboard them fast enough? Will it increase cognitive load?
    • Viability: Can we sell/monetize/finance it? Is it worth the cost? Can we support customers and help them succeed? Can we scale? Will it be compliant?
    • Feasibility: Can we do it with the current technology? Is this integration possible? Can it be efficient? Can we scale it?
    • Ethics: Should we do it at all? Are there any ethical considerations? Will it pose a risk for our customers?
    • Go-to-Market (especially critical for new products): Can we market it? Do we have the required channels? Can we convince customers to try it? Is this the right messaging for this channel? Is this the right time? Is this the right way to launch it?
    • Strategy & Objectives: What are our assumptions? Can others copy our strategy? Have we considered political, economic, legal, technological, and environmental factors? Are those the best problems to solve?
    • Team: How well will the team work together? Do we have the right people? Do we have the right tools? Will the entire team stay with us long enough?

  3. For each assumption, rate confidence and suggest a test.

Show full SKILL.md (35 more words)Show less

© phuryn, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in pm-product-discovery/skills/identify-assumptions-new of phuryn/pm-skills.

Open the folder on GitHubat commit 6058e29

Compare with similar skills

Identify Assumptions New next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Identify Assumptions New compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Identify Assumptions New this skillphuryn/pm-skills27k—~807Automated safety check: PassMIT
Marketing PlanNexus-JPF/note-companion8705 repos~5.2kAutomated safety check: PassMIT
Revenue Centric Designheliocosta-dev/revenue-centric-design740—~1.6kAutomated safety check: PassCustom licence
Startup Designferdinandobons/startup-skill1.2k—~8.1kAutomated safety check: PassMIT
Jaredrhod Marketingjaredrhod/ai-marketing-skills282—~584Automated safety check: PassCC-BY-SA-4.0
Traffic Acquisitionvivy-yi/xiaohongshu-skills4811 repos~4kAutomated safety check: PassNone

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Categories

Questions about Identify Assumptions New

What does Identify Assumptions New do?

Identify risky assumptions for a new product idea across 8 risk categories including Go-to-Market, Strategy, and Team. Identify Assumptions New is an agent skill from phuryn/pm-skills. Identify risky assumptions for a new product idea across 8 risk categories including Go-to-Market, Strategy, and Team.

When should I use Identify Assumptions New?

Identify Assumptions New fits situations like: evaluating startup risks; assessing a new product concept; mapping assumptions for a new venture.

How do I install Identify Assumptions New in Claude Code?

Run `npx skills add phuryn/pm-skills --skill identify-assumptions-new -a claude-code`. Or copy the skill folder (pm-product-discovery/skills/identify-assumptions-new in phuryn/pm-skills) into .claude/skills/identify-assumptions-new in your project. Claude Code loads it when a task matches its description.

How do I install Identify Assumptions New in Codex?

Run `npx skills add phuryn/pm-skills --skill identify-assumptions-new -a codex`. Or copy the skill folder (pm-product-discovery/skills/identify-assumptions-new in phuryn/pm-skills) into .agents/skills/identify-assumptions-new in your project. Codex loads it when a task matches its description.

Can I use Identify Assumptions New in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add phuryn/pm-skills --skill identify-assumptions-new -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/identify-assumptions-new, .gemini/skills/identify-assumptions-new, .github/skills/identify-assumptions-new and .opencode/skills/identify-assumptions-new in your project.

What does Identify Assumptions New need to run?

SKILL.md names no scripts, command-line tools or credentials: Identify Assumptions New is instructions for the agent only.

Does Identify Assumptions New access the network?

SKILL.md names 1 domain. As links in the text: productcompass.pm. This is read from the text; nothing was executed.

Is Identify Assumptions New safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Identify Assumptions New use?

Identify Assumptions New is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Identify Assumptions New use?

About 807 tokens (SKILL.md is roughly 3.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Identify Assumptions New?

Skills that share tags, products or a category with Identify Assumptions New: Marketing Plan (Nexus-JPF/note-companion, 870 stars), Revenue Centric Design (heliocosta-dev/revenue-centric-design, 740 stars), Startup Design (ferdinandobons/startup-skill, 1.2k stars) and Jaredrhod Marketing (jaredrhod/ai-marketing-skills, 282 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Identify Assumptions New?

phuryn (a GitHub user) maintains it in phuryn/pm-skills, which has 26,862 GitHub stars. The repository holds 67 skills in this directory. The repository was last updated on October 9, 2026.

Source: phuryn/pm-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.