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apple-dev-mcp CLAUDE.md

apple-dev-mcp CLAUDE.md is an instructions file for Claude Code from tmaasen/apple-dev-mcp. It costs 2,792 tokens per session, scanned A, original, MIT.

A set of instructions for developing the apple-dev-mcp project, including its build, test, lint, and development commands.

In plain words
What is it for?
Use it when changing or maintaining the Apple development reference server and when running its checks.
Why use it?
It gives the coding agent project-specific guidance instead of requiring it to infer how the repository works.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; mentions Claude Code.

not rated 21 1y ago A scan 2,792 tokens original MIT archived
View the source file tmaasen/apple-dev-mcp
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add instructions/tmaasen/apple-dev-mcp/claude-md
Clone the repo
git clone --depth 1 https://github.com/tmaasen/apple-dev-mcp

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.

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README.md
[![agentmods](https://agentmods.dev/badge/instructions/tmaasen/apple-dev-mcp/claude-md.svg)](https://agentmods.dev/instructions/tmaasen/apple-dev-mcp/claude-md)
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<a href="https://agentmods.dev/instructions/tmaasen/apple-dev-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/tmaasen/apple-dev-mcp/claude-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 2,792 This file is loaded in full into every session.
When invoked 2,792 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.02792 $0.02792
Opus 5 $0.01396 $0.01396
Sonnet 5 $0.00558 $0.00558
Haiku 4.5 $0.00279 $0.00279

Measured 6d ago against content hash 0a52fcc1a8c4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

apple-dev-mcp 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 6d 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 · 308 lines

How it starts

The opening of the file, as written. The whole thing — 308 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.

Project Overview

This is an Apple Dev MCP (Model Context Protocol) server that provides complete Apple development guidance, combining Human Interface Guidelines (design principles) with Technical Documentation (API reference) for all Apple platforms. It serves comprehensive content through both traditional MCP integration and modern Desktop Extensions (.dxt) for AI assistants like Claude.

Development Commands

Build and Test

  • npm run build - Compile TypeScript to JavaScript in dist/
  • npm run clean:build - Clean and rebuild the project
  • npm test - Run Jest test suite
  • npm run test:watch - Run tests in watch mode
  • npm run lint - Run ESLint on TypeScript files
  • npm run lint:fix - Fix linting issues automatically

Development

  • npm run dev - Start development server using tsx
  • npm start - Run compiled server from dist/
  • npm run test:automation - Automated MCP server testing

Testing with MCP Inspector

npx @modelcontextprotocol/inspector dist/server.js

Architecture Overview

The project uses a static content architecture with pre-built markdown files and optimized search indices. All content is pre-processed and cached for instant access without external dependencies:

Core Components

  1. AppleHIGMCPServer (src/server.ts) - Main MCP server entry point

    • Coordinates all components and handles MCP protocol communication
    • Sets up request handlers for resources and tools
    • Manages graceful startup/shutdown
    • Initializes static content services

  2. StaticContentSearchService (src/services/static-content-search.service.ts) - Primary content search engine

    • Fast search across 113+ pre-processed Apple HIG sections
    • Smart keyword matching with synonym expansion
    • Platform-specific filtering and relevance scoring
    • No external dependencies required

  3. HIGCache (src/cache.ts) - Smart caching layer

    • TTL-based caching with graceful degradation
    • Backup cache entries for offline resilience
    • Two-tier caching: fresh data + stale fallback data
    • Methods: getWithGracefulFallback(), setWithGracefulDegradation()

Read the full file on GitHub · 308 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.

  1. 6d ago First seen · 308 lines · 2,792 tokens per session scan A 0a52fcc1a8c4

Subscribe to this mod's changes

apple-dev-mcp CLAUDE.md is an instructions file published in the GitHub repository tmaasen/apple-dev-mcp (21 stars, last pushed 1y ago), licensed MIT. It adds 2,792 tokens to every session, about $0.0140 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 2026-08-30.

appleiosmcpmcp-server
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