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 Kappaemme-git/codex-startup-pressure-test-skill --skill startup-pressure-testgit clone --depth 1 https://github.com/Kappaemme-git/codex-startup-pressure-test-skillWrote 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/kappaemme-git/codex-startup-pressure-test-skill/startup-pressure-test)<a href="https://agentmods.dev/skills/kappaemme-git/codex-startup-pressure-test-skill/startup-pressure-test"><img src="https://agentmods.dev/badge/skills/kappaemme-git/codex-startup-pressure-test-skill/startup-pressure-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/kappaemme-git/codex-startup-pressure-test-skill/startup-pressure-test"><img src="https://agentmods.dev/badge/skills/kappaemme-git/codex-startup-pressure-test-skill/startup-pressure-test.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- 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 | $0.00081 | $0.01117 |
| Opus 5 | $0.00041 | $0.00558 |
| Sonnet 5 | $0.00016 | $0.00223 |
| Haiku 4.5 | $0.00008 | $0.00112 |
Grade A, and why
startup-pressure-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 — 148 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Startup Pressure Test
Overview
Use this skill to pressure-test a startup idea before the user wastes time building the wrong thing. Be direct, specific, and practical. Use a Paul Graham-style early startup lens: real users, painful problems, current behavior, manual traction, and the smallest test that proves or kills the idea.
Language
Match the user's language. If the user writes in Italian, answer in Italian. If the user writes in English, answer in English. Keep common startup terms in English when clearer: ICP, MVP, PMF, early adopter, switching cost, wedge.
First Move
If the idea is missing, ask for it first. Keep the question short:
Send me the startup idea, target customer, and what you want them to do/pay for.
If the idea is already provided, start immediately.
Modes
Choose the mode from the user request. If unclear, use full.
pressure-test: find fatal flaws and give a verdict.problem-validation: test whether the pain is real and urgent.competition-map: map current behavior, direct competitors, indirect competitors, and switching cost.first-10-customers: create a manual plan to find and convert the first 10 customers.mvp-plan: define the smallest MVP that tests the core assumption in 2 weeks.full: run a compact version of all modes.
Read references/playbooks.md for the detailed prompt templates and criteria for each mode.
Default Output
Default to compact output. Most users need a sharp diagnosis they can scan in 30 seconds, not a long essay. Include the score table by default.
Use this shape:
**Verdict**
Strong / Weak / Pivot required
2-3 direct sentences.
**Scorecard**
| Area | Score | Read |
|---|---:|---|
| Pain intensity | 3/5 | ... |
| Buyer clarity | 2/5 | ... |
| Urgency | 3/5 | ... |
| Differentiation | 2/5 | ... |
| Speed to validate | 4/5 | ... |
| Founder advantage | 3/5 | ... |
**Core Assumption**
One sentence.
**Fatal Flaws**
| Risk | Severity | Why It Matters | Fast Test |
|---|---|---|---|
| ... | High | ... | ... |
**Problem Reality**
- Pain: ...
- Early adopter: ...
- Vitamin or painkiller: ...
**Competition**
- Current behavior: ...
- Real enemy: ...
- Differentiation needed: ...
**First 10 Customers**
1. ...
2. ...
3. ...
**MVP**
- Build:
- Cut:
- 2-week test:
What ships with it
2 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.
- 9d ago First seen · 148 lines · 81 tokens per session scan A 792eeda72726
startup-pressure-test is a skill published in the GitHub repository Kappaemme-git/codex-startup-pressure-test-skill (994 stars, last pushed 4mo ago), licensed MIT. It adds 81 tokens to every session and 1,117 once invoked, about $0.0004 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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