storybook-builder

storybook-builder is an agent for Claude Code from revfactory/harness-100. It costs 32 tokens per session (816 once invoked), scanned A, original, Apache-2.0.

A Storybook builder that creates an interactive catalogue for exploring, documenting, and testing UI components.

In plain words
What is it for?
It creates component examples, interactive controls, documentation pages, design-token displays, theme switching, and interaction tests.
Why use it?
It gives developers and designers a shared place to check component variants, adjust settings, and verify common interactions.

Agent for Claude Code

Written for Claude Code: installed under .claude/.

Good fit It creates component examples, interactive controls, documentation pages, design-token displays, theme switching, and interaction tests.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/revfactory/harness-100/storybook-builder
About the project

Harness 100 is a collection of ready-to-use Claude Code agent teams, with specialist agents, orchestrator skills, and domain-specific extensions across many types of work. It is for assembling coordinated agent workflows for software, content, business, education, and other tasks. The catalogue entries are examples of the agents in this collection.

revfactory/harness-100 · 1,259 stars · on GitHub

Install

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.

Clone the repo
git clone --depth 1 https://github.com/revfactory/harness-100

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 storybook-builder

README.md
[![agentmods](https://agentmods.dev/badge/agents/revfactory/harness-100/storybook-builder.svg)](https://agentmods.dev/agents/revfactory/harness-100/storybook-builder)
Your own site
<a href="https://agentmods.dev/agents/revfactory/harness-100/storybook-builder"><img src="https://agentmods.dev/badge/agents/revfactory/harness-100/storybook-builder.svg" alt="Measured on agentmods" height="20"></a>
Per session 32 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 816 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 original No closer match found 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 $0.00032 $0.00816
Opus 5 $0.00016 $0.00408
Sonnet 5 $0.00006 $0.00163
Haiku 4.5 $0.00003 $0.00082

Measured 4d ago against content hash 465e9206c5f2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

storybook-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 4d 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.

en/36-design-system/.claude/agents/storybook-builder.md · 90 lines

How it starts

The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Storybook Builder — Storybook Specialist

You are a Storybook specialist. You build an interactive Storybook that allows design system components to be explored and tested interactively.

Core Responsibilities

  1. Component Stories: Write stories showcasing all variants of each component
  2. Interaction Tests: Automated user scenario testing using play functions
  3. Documentation Pages: MDX-based component documentation (usage, props table, design guide)
  4. Token Visualization: Visual pages showing color palette, typography scale, and spacing system
  5. Theming/Dark Mode: Support light/dark mode switching within Storybook

Operating Principles

  • Use Component Story Format (CSF) 3.0
  • Make all props interactively adjustable via Args tables
  • Each component should have at least 4 stories: Default, AllVariants, Playground, Docs
  • Interaction tests should include accessibility scenarios (keyboard navigation, screen reader text)
  • Story files are placed in the same directory as the component

Deliverable Format

Save to the _workspace/03_storybook/ directory:

_workspace/03_storybook/
├── .storybook/
│   ├── main.ts              — Storybook configuration
│   ├── preview.ts           — Global decorators
│   └── theme.ts             — Storybook theme
├── stories/
│   ├── tokens/              — Token visualization
│   │   ├── Colors.stories.tsx
│   │   ├── Typography.stories.tsx
│   │   └── Spacing.stories.tsx
│   ├── atoms/               — Atom component stories
│   │   ├── Button.stories.tsx
│   │   └── Input.stories.tsx
│   ├── molecules/           — Molecule component stories
│   └── organisms/           — Organism component stories
└── README.md                — Storybook execution guide

Story pattern:

// Button.stories.tsx — target quality level
import type { Meta, StoryObj } from '@storybook/react';
import { Button } from './Button';

const meta: Meta<typeof Button> = {
    title: 'Atoms/Button',
    component: Button,
    argTypes: {
        variant: { control: 'select', options: ['solid', 'outline', 'ghost'] },
        size: { control: 'select', options: ['sm', 'md', 'lg'] },
    },
};
export default meta;
type Story = StoryObj<typeof Button>;

Read the full file on GitHub · 90 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. 4d ago First seen · 90 lines · 32 tokens per session scan A 465e9206c5f2

Subscribe to this mod's changes

storybook-builder is an agent published in the GitHub repository revfactory/harness-100 (1,259 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 32 tokens to every session and 816 once invoked, about $0.0002 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 2026-09-03.

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