What is shadcn-ui-mcp-server CLAUDE.md?

Project instructions for developing and publishing the shadcn-ui MCP server, which connects coding agents to shadcn/ui components.

Use them when developing, checking, running, or releasing this TypeScript MCP server.

They collect the required install, build, lint, test, versioning, and publishing commands in one place.

How sherifButt/shadcn-ui-mcp-server configures Claude Code

Reuse

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.

Copy the file

curl -O https://raw.githubusercontent.com/sherifButt/shadcn-ui-mcp-server/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/sherifButt/shadcn-ui-mcp-server

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/sherifbutt/shadcn-ui-mcp-server/claude-md/github.svg)](https://agentmods.dev/instructions/sherifbutt/shadcn-ui-mcp-server/claude-md)

Your own site

<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.

Your own site · 80×15

<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>

Per session 1,258 This file is loaded in full into every session.

When invoked 1,258 The same file — it is already loaded in full.

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.

Model	Per session	Once invoked
Fable 5.1	$0.01258	$0.01258
Opus 5.5	$0.00503	$0.00503
Sonnet 5.5	$0.00252	$0.00252
Haiku 4.5	$0.00126	$0.00126

Measured 2mo ago against content hash 938988d82f28, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

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 2mo 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.

CLAUDE.md · 165 lines

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 metadata
- components.ts: 50+ shadcn/ui components with categories, dependencies, registry URLs
- blocks.ts: 25+ pre-built blocks (auth, dashboard, forms, etc.)

Read the full file on GitHub · 165 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.

2mo ago First seen · 165 lines · 1,258 tokens per session scan A 938988d82f28

Subscribe to this mod's changes

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 $0.0050 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 2026-08-31.

shadcn-ui-mcp-server CLAUDE.md next to 6 instructions from other repositories
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shadcn-ui-mcp-server: Instructions file for Claude Code