Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add guia-matthieu/clawfu-skills --skill mom-testgit clone --depth 1 https://github.com/guia-matthieu/clawfu-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/guia-matthieu/clawfu-skills/mom-test)<a href="https://agentmods.dev/skills/guia-matthieu/clawfu-skills/mom-test"><img src="https://agentmods.dev/badge/skills/guia-matthieu/clawfu-skills/mom-test/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/guia-matthieu/clawfu-skills/mom-test"><img src="https://agentmods.dev/badge/skills/guia-matthieu/clawfu-skills/mom-test.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00097 | $0.04357 |
| Opus 5 | $0.00048 | $0.02178 |
| Sonnet 5 | $0.00019 | $0.00871 |
| Haiku 4.5 | $0.00010 | $0.00436 |
Grade A, and why
mom-test scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 586 lines — stays where its author put it; the contents beside it link to each section on GitHub.
The Mom Test
Extract honest customer insights by asking questions about their life instead of your idea. Master Rob Fitzpatrick's methodology for conversations that can't lie to you.
When to Use This Skill
- Before building anything to validate if the problem is real and painful
- Customer discovery calls to get honest feedback without leading questions
- Pivoting decisions to understand if you should change direction
- Feature prioritization to learn what customers actually need vs. say they want
- Pricing conversations to discover willingness to pay without asking directly
- Early sales conversations to qualify leads without pitching
Methodology Foundation
| Aspect | Details |
|---|---|
| Source | Rob Fitzpatrick - "The Mom Test" (2013) |
| Core Principle | "Talk about their life instead of your idea. Ask about specifics in the past instead of generics or opinions about the future." |
| Why This Matters | People lie to be polite. Even your mom will say your idea is great. But they can't lie about what they've already done, what problems hurt them, and how they've tried to solve them. |
What Claude Does vs What You Decide
| Claude Does | You Decide |
|---|---|
| Structures production workflow | Final creative direction |
| Suggests technical approaches | Equipment and tool choices |
| Creates templates and checklists | Quality standards |
| Identifies best practices | Brand/voice decisions |
| Generates script outlines | Final script approval |
What This Skill Does
- Generates non-leading questions - Questions that can't be answered with polite lies
- Identifies commitment signals - Distinguishes real interest from fake enthusiasm
- Extracts problem severity - Finds out if problems are bad enough to pay to solve
- Uncovers existing solutions - Discovers what people already use/do
- Validates willingness to pay - Tests pricing without asking "would you pay?"
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 9d ago First seen · 586 lines · 97 tokens per session scan A 5cfa265b243c
mom-test is a skill published in the GitHub repository guia-matthieu/clawfu-skills (149 stars, last pushed 5mo ago), licensed MIT. It adds 97 tokens to every session and 4,357 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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