CoreTend

io.github.ahmetbsbnrPublished by GitHub account ahmetbsbnrv2.3.0Updated Oct 24, 2026

Read-only view of what fills a Mac: disk usage, cleanup candidates, largest items, app leftovers.

The publisher's own server: core.blue

VerifiedSTDIODesktop onlyFiles & StorageDeveloper Tools

Overview

AI-generated overview

CoreTend is a local macOS disk-cleanup tool whose MCP server gives an assistant a read-only view of disk usage, cleanup candidates, largest items and app data.

What you can do
Inspect disk usage and what fills the Mac's home folder, including a map of large files and exact duplicates. Review cleanup candidates such as caches, logs, developer files, simulators, package manager stores and local AI models. Identify the largest items and app leftovers that take space or start on their own. The MCP surface is described as read-only; moving items to the Trash is done in the CoreTend app after review, with Undo.
When to use it
Useful when you want an assistant to explain what is consuming space on a Mac, suggest safe cleanup candidates, or find large files and leftover app data before you decide what to remove in the CoreTend app.
Requirements
Runs as a local process on macOS 14 Sonoma or later (Apple silicon or Intel), started via the npm package coretend (for example with npx). Full Disk Access is requested once to read Mail, Safari and app data; without it, only what macOS allows is read. No account or API key is declared.
Before you install
The MCP view is read-only, but the accompanying app can move files to the Trash and uninstall apps; those moves are reviewed and reversible except for a local Time Machine snapshot deleted through the optional system helper. Full Disk Access grants broad read access to Mail, Safari and app data. The app checks the vendor site for updates unless turned off, and reads app update feeds only when you click Check for updates.

Installation

In SourceWeft

  1. Open CoreTend in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

[CoreTend app icon]

CoreTend

See what fills your Mac. Clear it safely.
Your whole Mac in one click, caches and developer files cleaned in one review, apps uninstalled completely — everything goes to the Trash, with Undo.

[Latest release] [npm] [macOS 14+] [Signed and notarized] [Apache 2.0]

Website · Download · What's new in 2.3 · Français

[CoreTend Overview]

Four spaces

SpaceThe question it answers
HomeHow is my Mac, and what can I do now? The space CoreTend can give back, one button away.
SpaceWhat takes the space? A map of your home folder, large files and exact duplicates.
CleanWhat can I remove safely? 30 rules read at once — caches, logs, Xcode, simulators, npm, pnpm, Gradle, Cargo, Mail, AI tools and local models (Ollama, LM Studio), broken login agents, disk images — safe items ticked, one review, Undo.
AppsWhich apps take space or start on their own? Uninstall completely: the app and the files it left.

History of every scan and move stays at the sidebar's foot.

Around the Mac

  • Shortcuts and Siri: Get Free Space, Get Space to Clear, Open CoreTend (read and open only).
  • Widget: free space and what the last Clean found.
  • Finder: right-click a folder › Analyze with CoreTend; or drop it on the Dock icon.
  • System features (optional): tidy /Library/Caches and turn third-party system services on or off, delete a local Time Machine snapshot or rebuild the Spotlight index, through a small signed helper installed only when you turn it on in Settings › System.

What CoreTend will never do

  • Erase your files for good. Moves go to the macOS Trash after your review; CoreTend checks each item again just before, and Undo puts it back. The one exception is a local Time Machine snapshot you pick and confirm in Settings › System, which macOS cannot put back.
  • Scare you. No health score, no alarm, no invented figure.
  • Watch you. No account, no telemetry, nothing in the background. CoreTend asks this site whether an update exists (you can turn it off), and reads your apps' own update feeds only when you click Check for updates in Apps.

Install

  • Download CoreTend-2.3.0-universal.dmg (notarized) from Releases or the site.
  • Homebrew: brew install --cask ahmetbsbnr/coretend/coretend (also links coretend in your PATH)
  • Terminal and AI assistants: coretend on npm — npx coretend clean · npx -y coretend mcp; see docs/CLI.md.

macOS 14 Sonoma or later, Apple silicon or Intel. English, French, German, Spanish, Italian and Japanese (follows macOS). CoreTend asks for Full Disk Access once, to read Mail, Safari and app data; without it, it reads what macOS allows.

Build from source

sh
swift build --product CoreTendApp   # the appswift build --product CoreTendCLI   # a read-only command-line toolmake check                          # tests, the safety audit and the site checksmake app                            # an unsigned CoreTend.app in Artifacts/

Swift 6, SwiftPM; one runtime dependency, Sparkle, for signed updates. The code is organised in modules: DesignSystem (the Serre design and the living greenhouse), ScanCore (read-only scanning), SafetyCore (the only code that may move a file — to the Trash), Domain, Persistence, AppShell and the app itself, plus the widget (CoreTendWidget), the Finder menu (CoreTendFinder) and the optional system helper (CoreTendHelper, HelperProtocol), which link no other package.

Contributing

Read CONTRIBUTING and GOVERNANCE. Security issues: SECURITY. Privacy: docs/Privacy.md. Code under Apache 2.0, documentation under CC BY 4.0 (docs/LICENSING.md).

Source: README.md at commit 665da81

Tools

0
SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

2
  1. v2.3.0LatestOct 17, 2026
  2. v2.2.0Oct 12, 2026

Score

50% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 days25 pts

    Keep the endpoint answering the MCP handshake; SourceWeft probes it every 30 days.

  • Auth declared10 pts

    Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.

  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts

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