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/jrmybtlr/useclassyWrote 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/jrmybtlr/useclassy/useclassy-project.cursor-rule)<a href="https://agentmods.dev/rules/jrmybtlr/useclassy/useclassy-project.cursor-rule"><img src="https://agentmods.dev/badge/rules/jrmybtlr/useclassy/useclassy-project.cursor-rule/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/jrmybtlr/useclassy/useclassy-project.cursor-rule"><img src="https://agentmods.dev/badge/rules/jrmybtlr/useclassy/useclassy-project.cursor-rule.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 | $0.00226 | $0.00226 |
| Opus 5.5 | $0.00090 | $0.00090 |
| Sonnet 5.5 | $0.00045 | $0.00045 |
| Haiku 4.5 | $0.00023 | $0.00023 |
Grade A, and why
useclassy-project.cursor-rule 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 1mo 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
UseClassy is enabled in this project
Prefer UseClassy modifier attributes for static Tailwind / UnoCSS variants:
- Vue, Svelte, Blade, HTML:
class="rounded px-4" class:hover="bg-blue-500" - React:
className="rounded px-4" className:hover="bg-blue-500"
Do not write hover:bg-blue-500, focus:ring-2, or md:px-6 on the base
class / className when a UseClassy modifier can express the same variant.
Leave Vue :class, native Svelte class:name={cond} directives, arbitrary
variants ([&>*]:…, data-[state=open]:…), and unrelated dynamic expressions
unchanged.
Full guide: .agents/skills/useclassy/SKILL.md
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.
- 1mo ago First seen · 23 lines · 226 tokens per session scan A 7ea3dc9e2cba
useclassy-project.cursor-rule is a cursor rule published in the GitHub repository jrmybtlr/useclassy (28 stars, last pushed 15d ago), licensed MIT. It adds 226 tokens to every session, about $0.0009 per session on Opus 5.5. 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 2026-09-06.
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