chatcli: Skill for Claude Code

.agent/skills/tailwind-patterns/SKILL.md

tailwind-patterns is a skill for Claude Code from diillson/chatcli. It costs 26 tokens per session (1,820 once invoked), scanned A, a copy of tailwind-patterns, Apache-2.0.

A guide to Tailwind CSS version 4, a styling system that uses small CSS classes and CSS-based theme settings to build interfaces.

In plain words
What is it for?
It helps define design tokens, use CSS variables, configure themes, and apply modern responsive styling patterns.
Why use it?
It clarifies the newer configuration model and helps avoid carrying older Tailwind setup habits into version 4.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

This is diillson/chatcli's own configuration. It tells Claude Code how to work on chatcli itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything chatcli configures →

Reuse

Borrowing it

Nothing to install: this file belongs to diillson/chatcli. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/diillson/chatcli/main/.agent/skills/tailwind-patterns/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/diillson/chatcli

Made for: Claude Code.

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.

agentmods badge for tailwind-patterns

README.md
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Your own site
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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.

agentmods 80×15 button for tailwind-patterns

Your own site · 80×15
<a href="https://agentmods.dev/skills/diillson/chatcli/tailwind-patterns"><img src="https://agentmods.dev/badge/skills/diillson/chatcli/tailwind-patterns.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,820 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 84% copy Near-identical to another mod in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00026 $0.01820
Opus 5.5 $0.00010 $0.00728
Sonnet 5.5 $0.00005 $0.00364
Haiku 4.5 $0.00003 $0.00182

Measured 1mo ago against content hash bc64b47c56a4, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

tailwind-patterns 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.

Origin

This is a copy

84% identical to tailwind-patterns — 10 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.agent/skills/tailwind-patterns/SKILL.md · 270 lines

How it starts

The opening of the file, as written. The whole thing — 270 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Tailwind CSS Patterns (v4 - 2025)

Modern utility-first CSS with CSS-native configuration.


1. Tailwind v4 Architecture

What Changed from v3

v3 (Legacy) v4 (Current)
tailwind.config.js CSS-based @theme directive
PostCSS plugin Oxide engine (10x faster)
JIT mode Native, always-on
Plugin system CSS-native features
@apply directive Still works, discouraged

v4 Core Concepts

Concept Description
CSS-first Configuration in CSS, not JavaScript
Oxide Engine Rust-based compiler, much faster
Native Nesting CSS nesting without PostCSS
CSS Variables All tokens exposed as --* vars

2. CSS-Based Configuration

Theme Definition

@theme {
  /* Colors - use semantic names */
  --color-primary: oklch(0.7 0.15 250);
  --color-surface: oklch(0.98 0 0);
  --color-surface-dark: oklch(0.15 0 0);
  
  /* Spacing scale */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  
  /* Typography */
  --font-sans: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

When to Extend vs Override

Action Use When
Extend Adding new values alongside defaults
Override Replacing default scale entirely
Semantic tokens Project-specific naming (primary, surface)

3. Container Queries (v4 Native)

Breakpoint vs Container

Type Responds To
Breakpoint (md:) Viewport width
Container (@container) Parent element width

Container Query Usage

Pattern Classes
Define container @container on parent
Container breakpoint @sm:, @md:, @lg: on children
Named containers @container/card for specificity

When to Use

Scenario Use
Page-level layouts Viewport breakpoints
Component-level responsive Container queries
Reusable components Container queries (context-independent)

Read the full file on GitHub · 270 lines

Changes

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.

  1. 1mo ago First seen · 270 lines · 26 tokens per session scan A bc64b47c56a4

Subscribe to this mod's changes

tailwind-patterns is a skill published in the GitHub repository diillson/chatcli (93 stars, last pushed yesterday), licensed Apache-2.0. It adds 26 tokens to every session and 1,820 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 84% identical to tailwind-patterns, differing in 10 lines, and is treated as a copy.

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