Borrowing it
Nothing to install: this file belongs to sherifButt/shadcn-ui-mcp-server. 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/sherifButt/shadcn-ui-mcp-server/main/CLAUDE.mdgit clone --depth 1 https://github.com/sherifButt/shadcn-ui-mcp-serverWrote 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/sherifbutt/shadcn-ui-mcp-server/claude-md)<a href="https://agentmods.dev/instructions/sherifbutt/shadcn-ui-mcp-server/claude-md"><img src="https://agentmods.dev/badge/instructions/sherifbutt/shadcn-ui-mcp-server/claude-md/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/sherifbutt/shadcn-ui-mcp-server/claude-md"><img src="https://agentmods.dev/badge/instructions/sherifbutt/shadcn-ui-mcp-server/claude-md.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 | $0.01258 | $0.01258 |
| Opus 5 | $0.00629 | $0.00629 |
| Sonnet 5 | $0.00252 | $0.00252 |
| Haiku 4.5 | $0.00126 | $0.00126 |
Grade A, and why
shadcn-ui-mcp-server CLAUDE.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 9d 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 — 165 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Development Commands
Core Development Tasks
npm install # Install dependencies
npm run build # Build TypeScript to JavaScript (required before running)
npm run dev # Watch mode for development
npm run lint # Type check without emitting files
npm start # Run the compiled MCP server
npm run clean # Remove dist/ directory
Publishing Workflow
npm run build # Build first
npm run lint # Ensure no type errors
git add . # Stage changes
git commit -m "description" # Commit changes
npm version patch|minor|major # Increment version
npm publish --access public # Publish to npm
Testing the MCP Server
The server is a stdio-based MCP server. Test configurations:
Claude Code MCP Integration:
# Add MCP server to Claude Code
claude mcp add shadcn-ui npx @sherifbutt/shadcn-ui-mcp-server
# List configured servers
claude mcp list
# Remove if needed
claude mcp remove shadcn-ui
Manual Testing:
# Direct execution (will run and wait for MCP messages)
npx @sherifbutt/shadcn-ui-mcp-server
# Development mode
./dist/index.js
Project Architecture
MCP Server Structure
This is a Model Context Protocol (MCP) server that provides 12 tools for working with shadcn/ui components:
Component Tools: list_components, get_component_source, get_component_metadata, get_component_demo, install_component
Block Tools: list_blocks, get_block_source, install_block
Repository Tools: browse_repository, search_repository
Project Tools: init_shadcn, check_project_status
Core Modules
-
src/index.ts- Main MCP server implementation- Uses StdioServerTransport for MCP communication
- All tools use Zod schemas for input validation
- Comprehensive error handling with proper MCP error codes
-
src/data/- Static registries with metadatacomponents.ts: 50+ shadcn/ui components with categories, dependencies, registry URLsblocks.ts: 25+ pre-built blocks (auth, dashboard, forms, etc.)
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.
- 9d ago First seen · 165 lines · 1,258 tokens per session scan A 938988d82f28
shadcn-ui-mcp-server CLAUDE.md is an instructions file published in the GitHub repository sherifButt/shadcn-ui-mcp-server (0 stars, last pushed 1y ago), licensed MIT. It adds 1,258 tokens to every session, about $0.0063 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.
Other instructions, from other repositories
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.