What is mcp-component-finder CLAUDE.md?

A set of Claude Code instructions for developing and testing the mcp-component-finder project, including its build, development, test, and npm publishing commands.

Use it when building the TypeScript project, running development mode or tests, publishing the package, or understanding its component-search server and code layout.

It gives contributors the repository-specific commands and structure needed to work on the project consistently.

How karudo/mcp-component-finder configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to karudo/mcp-component-finder. 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/karudo/mcp-component-finder/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/karudo/mcp-component-finder

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/karudo/mcp-component-finder/claude-md/github.svg)](https://agentmods.dev/instructions/karudo/mcp-component-finder/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/karudo/mcp-component-finder/claude-md"><img src="https://agentmods.dev/badge/instructions/karudo/mcp-component-finder/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/karudo/mcp-component-finder/claude-md"><img src="https://agentmods.dev/badge/instructions/karudo/mcp-component-finder/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 436 This file is loaded in full into every session.

When invoked 436 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	$0.00436	$0.00436
Opus 5.5	$0.00174	$0.00174
Sonnet 5.5	$0.00087	$0.00087
Haiku 4.5	$0.00044	$0.00044

Measured 2mo ago against content hash b72dbba84b12, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mcp-component-finder 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 · 61 lines

What it actually says

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Commands

Build

npm run build

Compiles TypeScript source files from src/ to JavaScript in dist/ using the custom build script at scripts/build.js.

Development

npm run dev

Runs TypeScript compiler in watch mode for development.

Testing

npm test

Runs the test suite located at dist/test.js.

Publishing

npm run publish:npm

Publishes the package to npm using the custom publish script at scripts/publish.js.

Architecture

This is an MCP (Model Context Protocol) server for finding component usage in React/TypeScript projects. The codebase follows a simple architecture:

Core Components

ComponentFinder (src/finder.ts): Main search engine that recursively scans project files to find imports and usages of specified components, functions, or types. Uses regex patterns to detect:
- Import statements (named, default, namespace)
- JSX usage
- Function calls
- Type annotations
- Destructuring patterns
ComponentFinderMCPServer (src/server.ts): MCP server implementation that:
- Handles JSON-RPC communication via stdin/stdout
- Exposes the find_component_usage tool
- Supports both detailed and files-only output formats
- Uses Russian language for output messages
Type Definitions (src/types.ts): Shared TypeScript interfaces for search options, results, and MCP protocol communication.

MCP Protocol Implementation

The server implements the MCP protocol with:

initialize: Returns server capabilities
tools/list: Lists available tools (currently only find_component_usage)
tools/call: Executes the component finder with provided arguments

Configuration

The project can be configured locally via .claude_config.json or globally in Claude Desktop's configuration. The PROJECT_ROOT environment variable determines the search scope.

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 · 61 lines · 436 tokens per session scan A b72dbba84b12

Subscribe to this mod's changes

mcp-component-finder CLAUDE.md is an instructions file published in the GitHub repository karudo/mcp-component-finder (0 stars, last pushed 1y ago), licensed MIT. It adds 436 tokens to every session, about $0.0017 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 2026-09-01.

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mcp-component-finder: Instructions file for Claude Code