Agent skill

Assumption Audit

by mohitagw15856 in mohitagw15856/pm-claude-skills

Surface the hidden assumptions a plan or belief rests on, then test what happens when each one is wrong.

MITAuto-check passedTesting & QA

Install Assumption Audit

skills CLI
$ npx skills add mohitagw15856/pm-claude-skills --skill assumption-audit -a claude-code

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

GitHub CLI
$ gh skill install mohitagw15856/pm-claude-skills assumption-audit --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/mohitagw15856/pm-claude-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/assumption-audit .claude/skills/assumption-audit && 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
assumption-audit
GitHub stars
1.4k
Token cost
~913 tokens
SKILL.md length
450 words
Files
1
Skills in repo
1,348
Repo updated
First seen
Licence
MIT

At a glance

Surface the hidden assumptions a plan or belief rests on, then test what happens when each one is wrong.

  • Works in 5 steps: Extract the assumptions. Read the… → Include the invisible ones. Push for the… → Rank by load. Which assumptions, if… → …
  • Asked what am I assuming here
  • SKILL.md covers What This Skill Produces, Required Inputs, Framework: Surface, Rank,… and Output Format, plus 3 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Assumption Audit is an agent skill from mohitagw15856/pm-claude-skills. Surface the hidden assumptions a plan or belief rests on, then test what happens when each one is wrong. Use when asked what am I assuming here, check my assumptions, what if I'm wrong about, or stress-test my thinking. Produces the unstated assumptions your conclusion depends on (ranked by how load-bearing they are), a flip of each to see which one breaking would change everything, and the cheapest way to check the riskiest ones — because the assumption you didn't know you were making is what sinks plans.

Its SKILL.md is about 910 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 Testing & QA, covering Load testing. The repository describes itself as: 1255 professional Agent Skills for Claude, ChatGPT, Gemini, Cursor & Codex — PRDs, postmortems, leases, medical bills, layoffs, go-bags, new countries. Plain markdown, MIT, in… The licence is MIT.

When your agent uses it

  • Asked what am I assuming here
  • Check my assumptions
  • What if Im wrong about
  • Stress-test my thinking

Example prompts

  • “/assumption-audit”

Workflow steps

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

  1. Extract the assumptions. Read the reasoning and name every belief it depends on — especially the quiet ones stated as fact.
  2. Include the invisible ones. Push for the assumptions so baked-in they're never questioned ("people will want this," "this will keep…
  3. Rank by load. Which assumptions, if false, barely change the conclusion? Which would collapse it? Focus on the load-bearing ones.
  4. Flip the critical ones. For each high-load assumption, follow through what happens if it's actually wrong.
  5. Find the cheap check. For the riskiest, name the fastest, lowest-cost way to test it before betting on it.

What it can do on your machine

Read from SKILL.md and the folder at commit 1cbf1f0. 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

    No URLs in SKILL.md.

    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

Assumption Audit loads about 913 tokens when it runs. Until then it costs about 132 tokens; SKILL.md has 450 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~132
When it runs · the whole SKILL.md, loaded when a task matches
~913

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 mohitagw15856/pm-claude-skills at commit 1cbf1f0, republished under its MIT licence (© mohitagw15856). 450 words, ~913 tokens.

Download SKILL.mdSave it as .claude/skills/assumption-audit/SKILL.md (or your agent's skills folder).
name
assumption-audit
description
Surface the hidden assumptions a plan or belief rests on, then test what happens when each one is wrong. Use when asked what am I assuming here, check my assumptions, what if I'm wrong about, or stress-test my thinking. Produces the unstated assumptions your conclusion depends on (ranked by how load-bearing they are), a flip of each to see which one breaking would change everything, and the cheapest way to check the riskiest ones — because the assumption you didn't know you were making is what sinks plans.

Assumption Audit

Every plan sits on a stack of assumptions, and the dangerous ones are invisible — you don't question what you don't notice you believe. This drags them into the light, ranks them by how much weight they carry, and flips the load-bearing ones to see which single wrong assumption would collapse the whole thing. Then it tells you the cheapest way to check that one before you bet on it.

What This Skill Produces

  • The assumption list — the unstated beliefs your plan/conclusion depends on, including the ones you didn't realize you were making
  • Load-bearing ranking — which assumptions, if wrong, barely matter vs. which would collapse everything
  • The flip test — for the critical ones, what actually happens if they're false
  • The cheap check — the fastest, lowest-cost way to test the riskiest assumption before committing

Required Inputs

Ask for these if not provided:

  • The plan, belief, or conclusion — what you want audited
  • Your reasoning — how you got there (reveals the assumptions)
  • What's at stake — so we know how hard to test
  • What you're treating as certain — the beliefs you're most confident in (often the riskiest)

Framework: Surface, Rank, Flip, Test

  1. Extract the assumptions. Read the reasoning and name every belief it depends on — especially the quiet ones stated as fact.
  2. Include the invisible ones. Push for the assumptions so baked-in they're never questioned ("people will want this," "this will keep working," "I'll have the time").
  3. Rank by load. Which assumptions, if false, barely change the conclusion? Which would collapse it? Focus on the load-bearing ones.
  4. Flip the critical ones. For each high-load assumption, follow through what happens if it's actually wrong.
  5. Find the cheap check. For the riskiest, name the fastest, lowest-cost way to test it before betting on it.
Show full SKILL.md (156 more words)Show less

Output Format

Auditing: [the plan/belief]

Assumptions it rests on

AssumptionLoad-bearing?If it's wrong…
[belief]🔴 collapses / 🟡 shifts / 🟢 minor[consequence]

The riskiest one: [the assumption most likely wrong AND most load-bearing]. Cheapest way to check it: [a fast, low-cost test].

Quality Checks

  • Assumptions are actually surfaced, including invisible ones
  • Each is ranked by how load-bearing it is
  • The critical assumptions are flipped to show consequences
  • The riskiest (wrong × load-bearing) is identified
  • A cheap, concrete check is proposed for it

Anti-Patterns

  • Only listing obvious assumptions and missing the buried ones.
  • Treating all assumptions as equally important.
  • Naming risks without flipping to see what breaking them does.
  • No cheap test — leaving the person to just bet on it.

Example Trigger Phrases

  • "What am I assuming in this plan?"
  • "Check my assumptions about this business idea."
  • "Stress-test my thinking here — what if I'm wrong?"
  • "I'm sure this will work — what am I not questioning?"
  • "What hidden assumption could sink this?"

© mohitagw15856, 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 skills/assumption-audit of mohitagw15856/pm-claude-skills.

Open the folder on GitHubat commit 1cbf1f0

Compare with similar skills

Assumption Audit 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.

Assumption Audit compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Assumption Audit this skillmohitagw15856/pm-claude-skills1.4k—~913Automated safety check: PassMIT
Writing Livekit Scenarioslivekit-examples/agent-starter-python2641 repos~2.5kAutomated safety check: PassMIT
Go Testingcxuu/golang-skills1731 repos~1.3kAutomated safety check: PassApache-2.0
Goalcraftgrp06/goalcraft102—~3.8kAutomated safety check: PassMIT
Thinking Partnermattnowdev/thinking-partner206—~4.4kAutomated safety check: PassMIT
Visionkunchenguid/vision331—~2.9kAutomated safety check: PassMIT

Similar skills

  • Writing Livekit Scenarios

    livekit-examples/agent-starter-python

    Creates and maintains the scenarios a LiveKit agent simulation runs, and wires the agent to consume them.

    264 GitHub starsUsed in 1 repo~2.5k tokens
    Testing & QAAuto-check passed
  • Go Testing

    cxuu/golang-skills

    A skill your agent uses when writing, reviewing, or improving Go test code — including table-driven tests, subtests, parallel tests, test helpers, test doubles, and assertions with cmp.Diff.

    173 GitHub starsUsed in 1 repo~1.3k tokens
    Testing & QAAuto-check passed
  • Goalcraft

    grp06/goalcraft

    Turn a rough draft, vague ambition, or messy task brief into a powerful Codex /goal objective for persistent, evidence-checked work.

    102 GitHub stars~3.8k tokensUpdated 4 mo ago
    Testing & QAAuto-check passed
  • Thinking Partner

    mattnowdev/thinking-partner

    A deterministic thinking partner that challenges assumptions and applies mental models to sharpen decisions, solve problems, and think more clearly.

    206 GitHub stars~4.4k tokensUpdated 6 mo ago
    Testing & QAAuto-check passed
  • Vision

    kunchenguid/vision

    Draft and stress-test a VISION.md for a repository, then iterate with the author on an interactive review board until approved.

    331 GitHub stars~2.9k tokensUpdated 1 mo ago
    Testing & QAAuto-check passed
  • Volt Load Testing

    owenHochwald/volt

    Safely exercise and evaluate HTTP APIs with the Volt CLI, including authenticated requests, JSON bodies, staged load, machine-readable results, performance baselines, and before/after comparisons.

    141 GitHub stars~1.2k tokensUpdated 2 mo ago
    Testing & QAAuto-check passed

More from mohitagw15856/pm-claude-skills

All 1,348 skills in this repo
  • Car Tco

    mohitagw15856/pm-claude-skills

    Compare the total cost of car ownership across buy-new, buy-used, lease, and keep-your-current-car — depreciation, insurance, maintenance ramp, and fuel over a real horizon, not just the monthly…

    1.4k GitHub stars~1.1k tokensUpdated yesterday
    Auto-check passed
  • Cs Health Scorecard

    mohitagw15856/pm-claude-skills

    Build a customer health scorecard for a specific account. An agent skill from mohitagw15856/pm-claude-skills.

    1.4k GitHub stars~2.4k tokensUpdated yesterday
    Auto-check passed
  • Exit Waterfall

    mohitagw15856/pm-claude-skills

    Compute who gets what at each exit price from a cap table — liquidation preferences, conversion points, and where the founders' share collapses.

    1.4k GitHub stars~1.1k tokensUpdated yesterday
    Auto-check passed
  • Feature Prioritisation

    mohitagw15856/pm-claude-skills

    Apply prioritisation frameworks (RICE, MoSCoW, Kano, ICE, Opportunity Scoring) to rank features and backlog items.

    1.4k GitHub stars~2k tokensUpdated yesterday
    Auto-check passed
  • Fire Number

    mohitagw15856/pm-claude-skills

    Compute a financial-independence (FIRE) target and years-to-reach with every assumption labeled as an assumption — plus a sensitivity table instead of a single false-precision answer.

    1.4k GitHub stars~1.1k tokensUpdated yesterday
    Auto-check passed
  • Freelance Rate

    mohitagw15856/pm-claude-skills

    Derive a freelance day/hourly rate backwards from target income, honest billable utilization, overhead, and the self-employment tax premium — the arithmetic that proves a rate is not salary÷2000.

    1.4k GitHub stars~1.2k tokensUpdated yesterday
    Auto-check passed

Categories

Questions about Assumption Audit

What does Assumption Audit do?

Surface the hidden assumptions a plan or belief rests on, then test what happens when each one is wrong. Assumption Audit is an agent skill from mohitagw15856/pm-claude-skills. Surface the hidden assumptions a plan or belief rests on, then test what happens when each one is wrong.

When should I use Assumption Audit?

Assumption Audit fits situations like: asked what am I assuming here; check my assumptions; what if Im wrong about; stress-test my thinking.

How do I install Assumption Audit in Claude Code?

Run `npx skills add mohitagw15856/pm-claude-skills --skill assumption-audit -a claude-code`. Or copy the skill folder (skills/assumption-audit in mohitagw15856/pm-claude-skills) into .claude/skills/assumption-audit in your project. Claude Code loads it when a task matches its description.

How do I install Assumption Audit in Codex?

Run `npx skills add mohitagw15856/pm-claude-skills --skill assumption-audit -a codex`. Or copy the skill folder (skills/assumption-audit in mohitagw15856/pm-claude-skills) into .agents/skills/assumption-audit in your project. Codex loads it when a task matches its description.

Can I use Assumption Audit 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 mohitagw15856/pm-claude-skills --skill assumption-audit -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/assumption-audit, .gemini/skills/assumption-audit, .github/skills/assumption-audit and .opencode/skills/assumption-audit in your project.

What does Assumption Audit need to run?

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

Does Assumption Audit access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Assumption Audit 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 Assumption Audit use?

Assumption Audit 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 Assumption Audit use?

About 913 tokens (SKILL.md is roughly 3.7k 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 Assumption Audit?

Skills that share tags, products or a category with Assumption Audit: Writing Livekit Scenarios (livekit-examples/agent-starter-python, 264 stars), Go Testing (cxuu/golang-skills, 173 stars), Goalcraft (grp06/goalcraft, 102 stars) and Thinking Partner (mattnowdev/thinking-partner, 206 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Assumption Audit?

mohitagw15856 (a GitHub user) maintains it in mohitagw15856/pm-claude-skills, which has 1,434 GitHub stars. The repository holds 1,348 skills in this directory. The repository was last updated on October 9, 2026.

Source: mohitagw15856/pm-claude-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.