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.
git clone --depth 1 https://github.com/yellow-hammer/skills-onescriptWrote 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/rules/yellow-hammer/skills-onescript/os-pitfalls)<a href="https://agentmods.dev/rules/yellow-hammer/skills-onescript/os-pitfalls"><img src="https://agentmods.dev/badge/rules/yellow-hammer/skills-onescript/os-pitfalls/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/rules/yellow-hammer/skills-onescript/os-pitfalls"><img src="https://agentmods.dev/badge/rules/yellow-hammer/skills-onescript/os-pitfalls.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 | $0.00000 | $0.00359 |
| Opus 5.5 | $0.00000 | $0.00144 |
| Sonnet 5.5 | $0.00000 | $0.00072 |
| Haiku 4.5 | $0.00000 | $0.00036 |
Grade A, and why
os-pitfalls 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.
What it actually says
Грабли OneScript
- Не называй переменные и функции:
И,Или,Не,Новый,Символы,Строка,Число,Дата,Булево,Тип,Вычислить. ПакетassertsзанимаетОжидаемиУтверждения. - У
Длянет шага. Обратный обход пиши черезПока. Новый Структура("a", 1, "b", 2)создаёт один ключ. Ключи перечисляются первым аргументом:"a,b".Формат(0, "ЧГ=0")- пустая строка. Нужно"ЧГ=0; ЧН=0".logosне подставляетНеопределенов%1. Оборачивай вСтрока(). Уровень -УровниЛога.- Таймауты TCP - миллисекунды.
ОжидатьСоединенияждёт весь интервал. Кодировка сокета - строка"utf-8". semver: составной диапазон собирай черезДобавитьДиапазон.Новый Версия("мусор")молча даёт0.0.0.- Длинный путь на Windows роняет
oneunit(PathTooLongException) и SQLite. Коротким путём служитsubst.
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 · 17 lines · 0 tokens per session scan A a7bc085ea548
os-pitfalls is a cursor rule published in the GitHub repository yellow-hammer/skills-onescript (40 stars, last pushed 10d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 359 tokens. 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 2026-10-07.
Other cursor rules, from other repositories
django
Definitive guidelines for writing maintainable, performant, and secure Django applications, emphasizing modern best practices, clear code organization, and efficient patterns.
rich
Definitive guidelines for building robust, maintainable, and visually appealing Python CLI applications using the rich library.
20-testing-generated-and-structure
Testing expectations, generated-file boundaries, and CLI structure contract.
shared-libraries
Shared libraries - condition framework, inventory containers, file-backed DB, itinerary, references.
table-of-contents-standard
Standard section ordering and TOC format for Verus source files.
spec-fn-naming
Spec function naming conventions.