Getting it into your agent
There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.
Wrote 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/roninforge/roninforge-tailwind-v4/tailwind-v4-config)<a href="https://agentmods.dev/rules/roninforge/roninforge-tailwind-v4/tailwind-v4-config"><img src="https://agentmods.dev/badge/rules/roninforge/roninforge-tailwind-v4/tailwind-v4-config.svg" alt="Measured on agentmods" 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 | $0.01411 |
| Opus 5 | $0.00000 | $0.00705 |
| Sonnet 5 | $0.00000 | $0.00282 |
| Haiku 4.5 | $0.00000 | $0.00141 |
Grade A, and why
tailwind-v4-config 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 5d 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 — 203 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Tailwind v4 Configuration
These rules apply when editing CSS files, PostCSS config, Vite config, or Tailwind config files. This rule also auto-attaches to tailwind.config.* files - if you see one in a v4 project, it may be a migration artifact that needs conversion to @theme.
The @theme Directive
@theme defines design tokens that generate both CSS variables and utility classes:
@import "tailwindcss";
@theme {
/* Colors - generates bg-brand, text-brand, border-brand, etc. */
--color-brand: #ff6a00;
--color-surface: #0a0a0a;
--color-surface-raised: #1a1a1a;
--color-muted: #737373;
/* Fonts - generates font-sans, font-mono, etc. */
--font-sans: "Inter", ui-sans-serif, system-ui, sans-serif;
--font-mono: "JetBrains Mono", ui-monospace, monospace;
/* Spacing - generates p-18, m-18, gap-18, etc. */
--spacing-18: 4.5rem;
--spacing-128: 32rem;
/* Border radius - generates rounded-card, etc. */
--radius-card: 0.75rem;
/* Shadows - generates shadow-card, etc. */
--shadow-card: 0 2px 8px rgb(0 0 0 / 0.12);
/* Breakpoints - generates sm:, md:, etc. */
--breakpoint-sm: 40rem;
--breakpoint-md: 48rem;
--breakpoint-lg: 64rem;
--breakpoint-xl: 80rem;
--breakpoint-2xl: 96rem;
/* Animations */
--animate-fade-in: fade-in 0.3s ease-out;
}
@keyframes fade-in {
from { opacity: 0; }
to { opacity: 1; }
}
Resetting Default Theme Namespaces
Use initial to clear a namespace before defining your own values:
@theme {
/* Remove ALL default colors, define only yours */
--color-*: initial;
--color-white: #ffffff;
--color-black: #000000;
--color-brand: #ff6a00;
--color-gray-50: #fafafa;
--color-gray-100: #f5f5f5;
--color-gray-900: #171717;
}
This is useful for strict brand compliance where default Tailwind colors should not be available.
The @source Directive
Control which files Tailwind scans for class names:
@import "tailwindcss";
/* Include a UI library from node_modules */
@source "../node_modules/@acmecorp/ui-lib";
/* Exclude legacy code from scanning */
@source not "../src/legacy";
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.
- 5d ago First seen · 203 lines · 0 tokens per session scan A 5b5f78bf0ec9
tailwind-v4-config is a cursor rule published in the GitHub repository RoninForge/roninforge-tailwind-v4 (2 stars, last pushed 2mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,411 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 2026-08-31.
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