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 getagentseal/founder-playbook --skill mom-testgit clone --depth 1 https://github.com/getagentseal/founder-playbookWrote 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/getagentseal/founder-playbook/mom-test)<a href="https://agentmods.dev/skills/getagentseal/founder-playbook/mom-test"><img src="https://agentmods.dev/badge/skills/getagentseal/founder-playbook/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/getagentseal/founder-playbook/mom-test"><img src="https://agentmods.dev/badge/skills/getagentseal/founder-playbook/mom-test.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- NVIDIA SkillSpector pass
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 | $0.00068 | $0.02054 |
| Opus 5 | $0.00034 | $0.01027 |
| Sonnet 5 | $0.00014 | $0.00411 |
| Haiku 4.5 | $0.00007 | $0.00205 |
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 11d 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 — 208 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Note: This skill is independent analysis and commentary, not a reproduction of the original text. It synthesizes the book's core ideas with modern startup practice, surfaces where frameworks are outdated or incomplete, and integrates perspectives from adjacent disciplines. For the full argument and context, read the original book.
The Mom Test
"How to talk to customers and learn if your business is a good idea when everyone is lying to you" - Rob Fitzpatrick
The 3 Core Rules
- Talk about their life, not your idea
- Ask about specifics in the past, not generics or opinions about the future
- Talk less, listen more
Decision Tree
Need customer feedback?
├─ Pre-product, no idea what to build → Mom Test (this skill)
├─ Have validated market, packaging product → 100m-offers
├─ Have offer, need traffic → 100m-leads
└─ Selling enterprise → spin-selling
In a customer conversation?
├─ They're complimenting you → DEFLECT to current behavior
├─ They're speaking in generics ("usually", "always") → ANCHOR to last specific instance
├─ They're requesting features → DIG to underlying motivation
└─ They're committing nothing → PRESS for time/reputation/money
Bad Questions (Never Ask)
| Question | Why It Fails |
|---|---|
| "Do you think it's a good idea?" | Only the market can tell. Opinions are worthless. |
| "Would you buy a product which did X?" | Everyone says yes. Hypotheticals are lies. |
| "How much would you pay for X?" | Numbers feel rigorous but are still lies. |
| "Do you ever..." / "Would you ever..." | Invites fluff and future-tense promises. |
Good Questions (Use These)
| Question | What It Reveals |
|---|---|
| "Why do you bother?" | Real motivation behind perceived problem |
| "What are the implications?" | Must-solve vs nice-to-have |
| "Talk me through the last time that happened." | Concrete past behavior |
| "What else have you tried?" | Whether they care enough to search |
| "How are you dealing with it now?" | Current solution + price anchor |
| "Where does the money come from?" | Budget and purchasing process |
| "Who else should I talk to?" | Tests if they care enough to make intros |
| "Is there anything else I should have asked?" | Catches missed points |
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 11d ago First seen · 208 lines · 68 tokens per session scan A 4af80c78a648
mom-test is a skill published in the GitHub repository getagentseal/founder-playbook (556 stars, last pushed 1mo ago), licensed MIT. It adds 68 tokens to every session and 2,054 once invoked, about $0.0003 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 2026-08-30.
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