Borrowing it
Nothing to install: this file belongs to the-single-gentlemans-club/storybook-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/the-single-gentlemans-club/storybook-mcp/master/.github/copilot-instructions.mdgit clone --depth 1 https://github.com/the-single-gentlemans-club/storybook-mcpWrote 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/instructions/the-single-gentlemans-club/storybook-mcp/copilot-instructions)<a href="https://agentmods.dev/instructions/the-single-gentlemans-club/storybook-mcp/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/the-single-gentlemans-club/storybook-mcp/copilot-instructions/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/instructions/the-single-gentlemans-club/storybook-mcp/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/the-single-gentlemans-club/storybook-mcp/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" 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 | $0.01829 | $0.01829 |
| Opus 5 | $0.00915 | $0.00915 |
| Sonnet 5 | $0.00366 | $0.00366 |
| Haiku 4.5 | $0.00183 | $0.00183 |
Grade A, and why
storybook-mcp copilot-instructions.md 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 12d 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 — 111 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Copilot Instructions — forgekit-storybook-mcp
Project Overview
MCP (Model Context Protocol) server that auto-generates Storybook stories, tests, and MDX docs for React component libraries. Published to npm as forgekit-storybook-mcp, runs as a CLI via stdio transport. It is not a React app—it analyzes and generates files in consumer projects. Requires Node ≥ 20 and targets Storybook 10+.
Architecture
src/
cli.ts → Entry: loads .env/.env.local, resolves config, runs preflight + init sync, starts MCP server
index.ts → MCP server: registers 15 tools via @modelcontextprotocol/sdk request handlers
tools.ts → 15 tool functions: listComponents, analyzeComponent, generateStory, updateStory,
validateStory, getStoryTemplate, listTemplates, getComponentCoverage, suggestStories,
syncAll, syncComponent, generateTest, generateDocs, checkHealth, generateCodeConnect
types.ts → All shared TypeScript interfaces + DEFAULT_CONFIG
utils/
scanner.ts → Component discovery (fast-glob) + prop/dependency extraction via regex
generator.ts → Story file generation (framework-aware: Chakra/shadcn/RN/etc.)
initializer.ts → Startup sync engine: MD5 hash diff via .storybook-mcp-cache.json; file watcher
setup.ts → Storybook bootstrapper: .storybook/ config, Nx monorepo detection
templates.ts → 8 built-in story templates (basic, with-controls, with-msw, form, etc.)
validator.ts → Story validator: 8 rule categories, 0-100 score
test-generator.ts → Generates Playwright or Vitest test files
docs-generator.ts → Generates MDX documentation files
code-connect-generator.ts → Generates @figma/code-connect .figma.tsx files
story-merger.ts → Pure functions: merges regenerated templates with user-added story blocks
story-history.ts → Writes .forgekit/story-history.json (max 10 versions per story)
preflight.ts → Storybook 10 compatibility checks before server starts
errors.ts → StorybookMCPError class + ErrorCode enum (typed error codes)
constants.ts → Single source of truth for all hardcoded values
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.
- 12d ago First seen · 111 lines · 1,829 tokens per session scan A 1e90ea501a1d
storybook-mcp copilot-instructions.md is an instructions file published in the GitHub repository the-single-gentlemans-club/storybook-mcp (1 stars, last pushed 4mo ago), licensed MIT. It adds 1,829 tokens to every session, about $0.0091 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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