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CoreTend

Read-only Mac storage inspection through MCP, covering disk usage, large items, cleanup candidates, and app leftovers.

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Install CoreTend

Pick your client, then add it in one click or paste the config.

STDIONode.js
~/Library/Application Support/Claude/claude_desktop_config.json
claude_desktop_config.json
{
  "mcpServers": {
    "coretend": {
      "command": "npx",
      "args": [
        "-y",
        "coretend"
      ]
    }
  }
}

Settings → Developer → Edit Config, merge this into mcpServers, then fully quit and reopen Claude Desktop.

Install not yet sandbox-tested— we haven't run this command through our automated sandbox yet. Not a red flag; we're working through the catalog.

Overview

The CoreTend MCP server gives AI assistants a read-only view of Mac storage. It can inspect disk usage, identify large items, surface cleanup candidates, and show files left by apps. Launch it through the CoreTend npm package with `npx -y coretend mcp`; reach for it when an agent needs storage context without directly deleting files.

Use cases

  • Inspect Mac disk usage through an AI assistant
  • Find the largest files on a Mac
  • Review possible cleanup candidates
  • Identify application leftovers
  • Answer local storage questions without deleting files

Key features

  • Read-only Mac storage inspection
  • Disk usage visibility
  • Largest-item discovery
  • Cleanup-candidate review
  • Application-leftover detection
  • npm-based MCP launch

Security & health

What it can reach and how reliably it runs — from our own checks, not the maintainer’s claims.

ActiveLast checked 1d ago

Recent health check succeeded.

Supply-chain signal

No high-severity advisories surfaced by our automated scan.

Critical 0High 0Medium 0Low 0

Scanned 13d ago via OSV.dev · coretend (npm)

Adoption & maintenance

Factual signals from GitHub, npm, and our automated checks — not a rating.

GitHub stars1Stargazers on the source repository.
npm downloads424Package downloads in the last 30 days.
Last commit11d agoMost recent push to the default branch.

How CoreTend works

What CoreTend MCP server does

The CoreTend MCP server exposes local Mac storage information to an AI assistant through Model Context Protocol. Its purpose is inspection rather than file removal: an agent can use it to understand what occupies disk space, locate unusually large items, review possible cleanup targets, and identify application leftovers.

This is useful when a developer wants an assistant to answer questions about a Mac’s storage without granting the assistant a general-purpose deletion workflow. The repository also contains a graphical application and command-line functionality, but the MCP entry point is intended for connecting CoreTend’s read-only inspection to an AI client.

How it works

CoreTend runs locally through its npm-distributed command. The MCP process is started with npx -y coretend mcp, allowing an MCP-compatible client to invoke CoreTend’s storage inspection capabilities. The available information comes from the Mac being inspected rather than from a remote account or hosted service.

The broader CoreTend application divides storage work into areas such as a home-folder space view, cleanup review, and application analysis. For the MCP use case, the supported scope is the read-only view described by the project listing: disk usage, cleanup candidates, largest items, and app leftovers. It also says that Full Disk Access may be needed to read Mail, Safari, and application data; without that permission, macOS limits what can be read.

Setup and configuration

Install or invoke the package from npm, then configure the MCP client to launch:

Terminal
npx -y coretend mcp

CoreTend supports macOS 14 Sonoma or later on both Apple silicon and Intel.

No environment variables are documented for running the MCP command. The project does not describe account setup, API credentials, or a remote service requirement. macOS permissions can affect the completeness of scan results, especially for protected Mail, Safari, and application data.

Tools and capabilities

The CoreTend MCP server is suited to read-only storage questions, including:

  • Inspecting overall disk usage on a Mac.
  • Finding large files or other large items.
  • Reviewing potential cleanup candidates.
  • Checking for files left behind by installed applications.
  • Supplying local storage context to an AI assistant without authorizing permanent deletion.

Limitations and notes

The CoreTend MCP server should be treated as an inspection interface, not as a cleanup executor. The project describes its storage view as read-only, while the desktop application separately moves reviewed items to the macOS Trash rather than erasing them permanently. That application behavior should not be assumed to be available through MCP.

Results may be incomplete when macOS permissions block access to protected locations. The project supports English and French according to the macOS language setting. It also states that update checking can be disabled in settings and that no account or telemetry is used.

Read the full README View source on GitHub

Reviews

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Frequently Asked Questions about CoreTend

CoreTend is an MCP server that connects an AI assistant to local Mac storage for read-only inspection. Its main tools and capabilities cover disk usage, largest items, cleanup candidates, and application leftovers. It runs locally through the CoreTend npm package and does not require an account or documented remote API.

Run `npx -y coretend mcp` from the MCP client configuration.

CoreTend can inspect disk usage, large items, cleanup candidates, and application leftovers. Access to Mail, Safari, and application data may require Full Disk Access; without it, macOS restricts the information available.

No, the MCP listing describes CoreTend as read-only. The desktop application has a separate reviewed cleanup flow that moves items to the macOS Trash and supports Undo, but that behavior should not be assumed to be exposed through MCP.

CoreTend supports macOS 14 Sonoma or later on Apple silicon and Intel Macs.

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