Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/nweii/agent-stuffnpx agentmods add skills/nweii/agent-stuff/use-tailwind-v4Wrote 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/nweii/agent-stuff/use-tailwind-v4)<a href="https://agentmods.dev/skills/nweii/agent-stuff/use-tailwind-v4"><img src="https://agentmods.dev/badge/skills/nweii/agent-stuff/use-tailwind-v4.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 | $0.00063 | $0.00805 |
| Opus 5 | $0.00032 | $0.00402 |
| Sonnet 5 | $0.00013 | $0.00161 |
| Haiku 4.5 | $0.00006 | $0.00081 |
Grade A, and why
use-tailwind-v4 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 — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Tailwind CSS v4
v4 Syntax At a Glance
Imports and Setup
/* v4 import (replaces @tailwind directives) */
@import "tailwindcss";
/* Custom utilities (replaces @layer utilities) */
@utility tab-4 {
tab-size: 4;
}
/* Loading JS config (if still needed) */
@config "../../tailwind.config.js";
CSS Variables for Theme
v4 exposes all theme values as CSS variables. Prefer these over theme():
background-color: var(--color-red-500);
font-family: var(--font-sans);
Quick Reference: v3 → v4 Changes
Renamed Utilities
| v3 | v4 | Notes |
|---|---|---|
shadow-sm |
shadow-xs |
Scale shifted |
shadow |
shadow-sm |
Scale shifted |
drop-shadow-sm |
drop-shadow-xs |
Scale shifted |
drop-shadow |
drop-shadow-sm |
Scale shifted |
blur-sm |
blur-xs |
Scale shifted |
blur |
blur-sm |
Scale shifted |
backdrop-blur-sm |
backdrop-blur-xs |
Scale shifted |
backdrop-blur |
backdrop-blur-sm |
Scale shifted |
rounded-sm |
rounded-xs |
Scale shifted |
rounded |
rounded-sm |
Scale shifted |
outline-none |
outline-hidden |
outline-none now sets outline-style: none |
ring |
ring-3 |
Default changed from 3px to 1px |
Deprecated Utilities (Use Opacity Modifiers)
<!-- v3: opacity utilities -->
<div class="bg-black bg-opacity-50">
<!-- v4: opacity modifiers -->
<div class="bg-black/50">
Also: flex-shrink-* → shrink-*, flex-grow-* → grow-*, overflow-ellipsis → text-ellipsis
Default Changes
| What | v3 Default | v4 Default |
|---|---|---|
| Border color | gray-200 |
currentColor |
| Ring width | 3px |
1px |
| Ring color | blue-500 |
currentColor |
| Button cursor | pointer |
default |
Variant Stacking Order
Changed from right-to-left to left-to-right:
<!-- v3 -->
<ul class="first:*:pt-0">
<!-- v4 -->
<ul class="*:first:pt-0">
Variable Syntax in Arbitrary Values
<!-- v3: square brackets -->
<div class="bg-[--brand-color]">
<!-- v4: parentheses -->
<div class="bg-(--brand-color)">
What ships with it
1 file 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.
- 5d ago First seen · 114 lines · 63 tokens per session scan A f1f45fec9baa
use-tailwind-v4 is a skill published in the GitHub repository nweii/agent-stuff (8 stars, last pushed 17d ago), licensed MIT. It adds 63 tokens to every session and 805 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 2026-08-31.
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