Agent skill

Prioritize Assumptions

by phuryn in phuryn/pm-skills

Prioritize assumptions using an Impact × Risk matrix and suggest experiments for each.

MITAuto-check passedProduct & Project Management

Install Prioritize Assumptions

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

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

GitHub CLI
$ gh skill install phuryn/pm-skills prioritize-assumptions --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/prioritize-assumptions .claude/skills/prioritize-assumptions && 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
prioritize-assumptions
GitHub stars
27k
Token cost
~571 tokens
SKILL.md length
249 words
Files
1
Skills in repo
67
Repo updated
First seen
Licence
MIT

At a glance

Prioritize assumptions using an Impact × Risk matrix and suggest experiments for each.

  • Works in 4 steps: For each assumption, evaluate two… → Categorize each assumption using the… → For each assumption requiring testing,… → …
  • Triaging a list of assumptions
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Deciding what to test first

What it does

Prioritize Assumptions is an agent skill from phuryn/pm-skills. Prioritize assumptions using an Impact × Risk matrix and suggest experiments for each. Use when triaging a list of assumptions, deciding what to test first, or applying the assumption prioritization canvas.

Its SKILL.md is about 570 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 Product & Project Management, covering Prioritization frameworks. 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

  • Triaging a list of assumptions
  • Deciding what to test first
  • Applying the assumption prioritization canvas

Example prompts

  • “/prioritize-assumptions”

Workflow steps

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

  1. For each assumption, evaluate two dimensions
  2. Categorize each assumption using the Impact × Risk matrix
  3. For each assumption requiring testing, suggest an experiment that
  4. Present results as a prioritized matrix or table.

What it can do on your machine

Read from SKILL.md and the folder at commit 8607e3b. 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

Prioritize Assumptions loads about 571 tokens when it runs. Until then it costs about 57 tokens; SKILL.md has 249 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~57
When it runs · the whole SKILL.md, loaded when a task matches
~571

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 8607e3b, republished under its MIT licence (© phuryn). 249 words, ~571 tokens.

Download SKILL.mdSave it as .claude/skills/prioritize-assumptions/SKILL.md (or your agent's skills folder).
name
prioritize-assumptions
description
Prioritize assumptions using an Impact × Risk matrix and suggest experiments for each. Use when triaging a list of assumptions, deciding what to test first, or applying the assumption prioritization canvas.

Prioritize Assumptions

Triage assumptions using an Impact × Risk matrix and suggest targeted experiments.

Context

You are helping prioritize assumptions for $ARGUMENTS.

If the user provides files with assumptions or research data, read them first.

Domain Context

ICE works well for assumption prioritization: Impact (Opportunity Score × # Customers) × Confidence (1–10) × Ease (1–10). Opportunity Score = Importance × (1 − Satisfaction), normalized to 0–1 (Dan Olsen). RICE splits Impact into Reach × Impact separately: (R × I × C) / E. See the prioritization-frameworks skill for full formulas and templates.

Instructions

The user will provide a list of assumptions to prioritize. Apply the following framework:

  1. For each assumption, evaluate two dimensions:

    • Impact: The value created by validating this assumption AND the number of customers affected (in ICE: Impact = Opportunity Score × # Customers)
    • Risk: Defined as (1 - Confidence) × Effort
  2. Categorize each assumption using the Impact × Risk matrix:

    • Low Impact, Low Risk → Defer testing until higher-priority assumptions are addressed
    • High Impact, Low Risk → Proceed to implementation (low risk, high reward)
    • Low Impact, High Risk → Reject the idea (not worth the investment)
    • High Impact, High Risk → Design an experiment to test it
  3. For each assumption requiring testing, suggest an experiment that:

    • Maximizes validated learning with minimal effort
    • Measures actual behavior, not opinions
    • Has a clear success metric and threshold
  4. Present results as a prioritized matrix or table.

Think step by step. Save as markdown if the output is substantial.


Further Reading

© 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/prioritize-assumptions of phuryn/pm-skills.

Open the folder on GitHubat commit 8607e3b

Compare with similar skills

Prioritize Assumptions 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.

Prioritize Assumptions compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Prioritize Assumptions this skillphuryn/pm-skills27k—~571Automated safety check: PassMIT
Agile Product Owneralirezarezvani/claude-skills28k3 repos~3.2kAutomated safety check: PassMIT
Prioritization Framework Advisordeanpeters/Product-Manager-Skills7.2k2 repos~4.2kAutomated safety check: PassCustom licence
Strategic Roadmap Planningdeanpeters/Product-Manager-Skills7.2k2 repos~4.7kAutomated safety check: PassCustom licence
Idea Validatoraakashg/pm-claude-skills112—~2.3kAutomated safety check: PassMIT
Triagejoa23/linear-cli144—~699Automated safety check: PassMIT

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Questions about Prioritize Assumptions

What does Prioritize Assumptions do?

Prioritize assumptions using an Impact × Risk matrix and suggest experiments for each. Prioritize Assumptions is an agent skill from phuryn/pm-skills. Prioritize assumptions using an Impact × Risk matrix and suggest experiments for each.

When should I use Prioritize Assumptions?

Prioritize Assumptions fits situations like: triaging a list of assumptions; deciding what to test first; applying the assumption prioritization canvas.

How do I install Prioritize Assumptions in Claude Code?

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

How do I install Prioritize Assumptions in Codex?

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

Can I use Prioritize Assumptions 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 prioritize-assumptions -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/prioritize-assumptions, .gemini/skills/prioritize-assumptions, .github/skills/prioritize-assumptions and .opencode/skills/prioritize-assumptions in your project.

What does Prioritize Assumptions need to run?

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

Does Prioritize Assumptions 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 Prioritize Assumptions 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 Prioritize Assumptions use?

Prioritize Assumptions 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 Prioritize Assumptions use?

About 571 tokens (SKILL.md is roughly 2.3k 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 Prioritize Assumptions?

Skills that share tags, products or a category with Prioritize Assumptions: Agile Product Owner (alirezarezvani/claude-skills, 28k stars), Prioritization Framework Advisor (deanpeters/Product-Manager-Skills, 7.2k stars), Strategic Roadmap Planning (deanpeters/Product-Manager-Skills, 7.2k stars) and Idea Validator (aakashg/pm-claude-skills, 112 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Prioritize Assumptions?

phuryn (a GitHub user) maintains it in phuryn/pm-skills, which has 26,845 GitHub stars. The repository holds 67 skills in this directory. The repository was last updated on September 14, 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.