/storybook-mcp-integration

name: storybook-mcp-integration
license: MIT
compatibility: "Claude Code 2.1.277+. Optional: @storybook/addon-mcp (Storybook 10.3+, Vite-based only)."
description: "Storybook MCP server (@storybook/addon-mcp) tools and toolsets. Use when calling them on existing components. To build from a mockup, use design-to-code."
user-invocable: false
disable-model-invocation: false
targets:
  - library: storybook
    version: ">=10.6.1"
metadata:
  category: document-asset-creation
  mcp-server: storybook-mcp
  version: "1.0.0"
  author: "OrchestKit"
  complexity: "medium"
  tags: "storybook, mcp, component-discovery, story-preview, component-testing, a11y, design-system, react"
allowed-tools: "Read Glob Grep WebFetch WebSearch ToolSearch mcp__storybook-mcp__get-storybook-story-instructions mcp__storybook-mcp__preview-stories mcp__storybook-mcp__list-all-documentation mcp__storybook-mcp__get-documentation mcp__storybook-mcp__get-documentation-for-story mcp__storybook-mcp__run-story-tests"
paths:
  - ".storybook/**"
  - "src/**/*.stories.{ts,tsx}"

Storybook MCP Integration

Use the Storybook MCP server (`@storybook/addon-mcp`) to give agents awareness of a project's actual component library — props, stories, tests, and live previews.

When to Use

• **Component generation** — check existing Storybook components before creating new ones
• **Component testing** — run story tests + a11y audits via MCP instead of CLI
• **Visual verification** — embed story previews in chat for user confirmation
• **Component auditing** — inventory components with full metadata via MCP

Quick Reference — 6 Tools, 3 Toolsets

| Toolset | Tool | Purpose | Key Inputs | |---------|------|---------|------------| | **dev** | `get-storybook-story-instructions` | Guidance on writing stories + interaction tests | none | | **dev** | `preview-stories` | Returns preview URLs for stories (embeddable) | `stories[]: {storyId}` or `{absoluteStoryPath, exportName}` | | **docs** | `list-all-documentation` | Full component + docs manifest index | none | | **docs** | `get-documentation` | Props, first 3 stories, story index, docs | `id` (required), `storybookId` (optional) | | **docs** | `get-documentation-for-story` | Full story source + component docs | `componentId`, `storyName` (required) | | **testing** | `run-story-tests` | Run component + a11y tests, pass/fail + violations | `stories[]` (optional), `a11y` boolean (default true) |

Prerequisites

# Storybook 10.3+ with Vite builder (no webpack)
npx storybook@latest upgrade

# Install the addon (current: @storybook/addon-mcp@0.6.0, Apr 2026)
npx storybook add @storybook/addon-mcp

# Enable docs toolset (required for component discovery)
# In .storybook/main.ts:
#   componentsManifest: true
# NOTE: the old `experimentalComponentsManifest` flag was renamed in
# Storybook 10.3; it is now `componentsManifest` and default-on. Any
# code still passing the `experimental` prefix will warn-then-ignore.

# For Chromatic remote setups, use the standalone package instead of
# the addon (same tool surface, no local Storybook required):
#   npm i -D @storybook/mcp
#   npx storybook-mcp --registry https://chromatic.storybook.cloud

# Enable testing toolset (requires addon-vitest)
# npx storybook add @storybook/addon-vitest

# Register with Claude Code
npx mcp-add --type http --url "http://localhost:6006/mcp" --scope project

Detection Pattern

Before using Storybook MCP tools, check availability:

# Probe for storybook-mcp tools
ToolSearch(query="+storybook list-all-documentation")

# If tools found → Storybook MCP is available
# If not found → fallback to filesystem-based component discovery

Rule Details

Load rules on demand with `Read("rules/<file>")`:

| Rule | Impact | Description | |------|--------|-------------| | `component-discovery` | HIGH | Use list-all-documentation + get-documentation before generating new components | | `story-preview-verification` | HIGH | Embed preview-stories URLs for visual confirmation | | `mcp-test-runner` | CRITICAL | Run run-story-tests with a11y:true after component generation |

Toolset Selection

Filter toolsets via `X-MCP-Toolsets` header to reduce agent context:

| Agent Role | Toolsets | Rationale | |------------|----------|-----------| | component-curator | `docs` | Inventory + props only, no testing | | frontend-ui-developer | `dev,docs,testing` | Full access for gen → verify loop | | design-system-architect | `docs` | Component metadata for governance |

Chromatic Remote Publishing

For teams using Chromatic, the docs toolset is publishable remotely:

• Published at `https://<chromatic-storybook-url>/mcp`
• Only docs toolset available remotely (dev + testing need local Storybook)
• Useful for cross-team design system discovery without running Storybook locally

Graceful Degradation

| Storybook MCP | Fallback | Behavior | |---------------|----------|----------| | Available | — | Use MCP tools for component discovery, testing, previews | | Unavailable | Filesystem | `Glob("**/components/**/*.tsx")` + `Grep` for component inventory | | Unavailable | 21st.dev | Search public registry via 21st-dev-magic MCP | | Unavailable | Manual | Claude multimodal analysis of screenshots |

Related Skills

• `storybook-testing` — CSF3 patterns, Vitest integration, Chromatic TurboSnap
• `component-search` — 21st.dev registry search (external components)
• `design-to-code` — Full mockup-to-component pipeline (uses this skill in Stage 2)
• `ui-components` — shadcn/ui + Radix component patterns