Claude Code Guide is a reference collection for configuring and using Claude Code, Anthropic’s command-line coding agent. Developers use it to learn commands, skills, agents, MCP, automation, security, integrations, and troubleshooting. Its catalogue add-ons provide many of the documented skills and agents.
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.
npx skills add zebbern/claude-code-guide --skill design-system-buildergit clone --depth 1 https://github.com/zebbern/claude-code-guideWrote 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/zebbern/claude-code-guide/design-system-builder)<a href="https://agentmods.dev/skills/zebbern/claude-code-guide/design-system-builder"><img src="https://agentmods.dev/badge/skills/zebbern/claude-code-guide/design-system-builder/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/skills/zebbern/claude-code-guide/design-system-builder"><img src="https://agentmods.dev/badge/skills/zebbern/claude-code-guide/design-system-builder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 2 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium MCP Rug Pull · line 86 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 89 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00047 | $0.01435 |
| Opus 5.5 | $0.00019 | $0.00574 |
| Sonnet 5.5 | $0.00009 | $0.00287 |
| Haiku 4.5 | $0.00005 | $0.00144 |
Grade A, and why
design-system-builder 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.
Copies of this mod
4 near-identical copies found in the catalogue:
- ui-designer — 100% identical, 2 lines differ
- design-system-builder — 100% identical, 0 lines differ
- ui-designer — 100% identical, 2 lines differ
- ui-designer — 95% identical, 22 lines differ
How it starts
The opening of the file, as written. The whole thing — 192 lines — stays where its author put it; the contents beside it link to each section on GitHub.
UI Designer
Overview
This skill enables systematic extraction of design systems from reference UI images through a multi-step workflow: analyze visual patterns → generate design system documentation → create PRD → produce implementation-ready UI prompts.
When to Use
- User provides UI screenshots, mockups, or design references
- Need to extract color palettes, typography, spacing from existing designs
- Want to generate design system documentation from visual examples
- Building MVP UI that should match reference aesthetics
- Creating multiple UI variations following consistent design principles
Workflow
Step 1: Gather Inputs
Request from user:
- Reference images directory: Path to folder containing UI screenshots/mockups
- Project idea file: Document describing the product concept and goals
- Existing PRD (optional): If PRD already exists, skip Step 3
Step 2: Extract Design System from Images
Use Task tool with general-purpose subagent, providing:
Prompt template from assets/design-system.md:
- Analyze color palettes (primary, secondary, accent, functional colors)
- Extract typography (font families, sizes, weights, line heights)
- Identify component styles (buttons, cards, inputs, icons)
- Document spacing system
- Note animations/transitions patterns
- Include dark mode variants if present
Attach reference images to the subagent context.
Output: Complete design system markdown following the template format
Save to: documents/designs/{image_dir_name}_design_system.md
Step 3: Generate MVP PRD (if not provided)
Use Task tool with general-purpose subagent, providing:
Prompt template from assets/app-overview-generator.md:
- Replace
{项目背景}with content from project idea file - The template guides through: elevator pitch, problem statement, target audience, USP, features list, UX/UI considerations
Interact with user to refine and clarify product requirements
Output: Structured PRD markdown
What ships with it
4 files 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.
- 1mo ago First seen · 192 lines · 47 tokens per session scan A bdc7727d9feb
design-system-builder is a skill published in the GitHub repository zebbern/claude-code-guide (4,672 stars, last pushed yesterday), licensed MIT. It adds 47 tokens to every session and 1,435 once invoked, about $0.0002 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 2026-08-30.
Other skills, from other repositories
cdb-scan
Map this codebase into project memory — a code graph of every symbol and how they connect, plus a written profile of stack, layout, conventions and workflows. Re-run any time to refresh both in place. Use when memory is newly installed on an existing project, or when the project has changed enough that the stored map…
brand-identity
Brand strategy and identity design for businesses and products. Use when creating brand guidelines, developing visual identity systems, or defining brand positioning.
generic-react-ux-designer
Professional UI/UX design expertise for React applications. Covers design thinking, user psychology (Hick's/Fitts's/Jakob's Law), visual hierarchy, interaction patterns, accessibility, performance-driven design, and design critique. Use when designing features, improving UX, solving user problems, or conducting design…
graphic-design
Professional graphic design principles for digital and print media. Use when creating visual designs, choosing color palettes, typography, layouts, or providing design feedback.
generic-ux-designer
Professional UX expertise for any project type. Covers user research, design thinking, interaction patterns, accessibility, and design critique. Use when designing new features, improving UX, conducting design reviews, or evaluating user flows. For visual UI work, combine with ui-research skill.
generic-design-system
Complete design system reference for any project - colors, typography, spacing, components, animations. Adapts to project theme and tech stack. Use when implementing UI, choosing colors, creating animations, or ensuring brand consistency. For new design systems, use ui-research skill first.