Open sourceBuilt for macOS

You and your agent.One shared shelf.

Gather files, links, and long notes.Ask your agent to read them and leave its work here.

Free · Open source · macOS 26+

cc:3 items
  • Notes for the agent

    You · Context for this work

  • Review summary.md

    Claude Code · Ready for your review

  • Implementation plan.md

    Codex · Work returned to you

Add FilesPasteDragClear All

Illustrative preview · Sample items. No local files are accessed.

Files · Folders · Links · Text · Images

— i. share

Give your agent the materials it needs.

Add files, screenshots, links, and long notes to the shelf. Tell Codex or Claude Code which items to read, without pasting every path or the full text into chat.

Use Option + Tab for Finder selections, or Paste for text.

Reference files in Finder

Project brief.pdfScreen to review.png
⌥ Tab
cc:3 items
  • Notes for the agent

    You · Long text, kept together

  • Screen to review.png

    You · Screenshot

  • Project brief.pdf

    You · Reference material

Add FilesPasteDragClear All

Ask your agent to read the materials on cc:.

— ii. receive

Receive the work on your shelf.

Ask your agent to leave the results in cc:. Receive them on the same shelf, ready to open or drag into the next app, without hunting through a temporary folder for a file path.

Returned files are copied locally and kept until you remove them.

YouCodexClaude Code
cc:3 items
  • Review summary.md

    Claude Code · Ready for your review

  • Implementation plan.md

    Codex · Work returned to you

  • Project brief.pdf

    You · Shared reference

Add FilesPasteDragClear All

Ask for the results on the same shelf.

— iii. place

Right where you reach for it.

Keep reference files and results close until you need them next. Menu Bar stays the default; choose the optional Notch shelf in Settings on a supported Mac. Both show the same items.

Other displays use the menu bar.

cc:3 items
  • Notes for the agent

    You · Context for this work

  • Review summary.md

    Claude Code · Ready for your review

  • Implementation plan.md

    Codex · Work returned to you

Add FilesPasteDragClear All

An optional home at the top of your screen.

— Privacy

Your shelf, stored on this Mac.

  • No cc: account
  • No cloud sync
  • No app telemetry
  • No hosted work history

cc: stores the shelf and managed copies locally until you remove them. cc: itself does not upload your files or clipboard contents, sync the shelf to a server, or collect usage data.

— Install

Set up your shared shelf.

1. Install the app

Download cc:, open the DMG, drag the app to Applications, then launch it.

cc: markcc: for macOS
Download DMG

v0.4.4 · macOS 26+ · Apple Silicon & Intel

cc: is not yet notarized by Apple. macOS may block it the first time you open it. To continue, open System Settings → Privacy & Security and click “Open Anyway.”

2. Connect your agent

After opening the app, send the request below to Codex or Claude Code to set up the connection. Check its status in Settings → Agent Tools.

https://github.com/hayashiii-ghub/cc
Read this repository's AGENTS.md and set up agent integration for the installed cc: app.

— FAQ

A few things to know.

What problem is cc: solving?

Use cc: when preparing material for Codex or Claude Code, or when an agent returns a file path. Gather files and long notes on the shelf, ask the agent to read them, then ask it to leave the results there too.

Can I change the shortcuts?

Yes. Open Settings to record your own shortcuts for adding Finder selections and showing the shelf. The defaults are Option + Tab and Option + Shift + Tab.

What can I put on the shelf?

Files, folders, images, URLs, and text, including long notes. Add Finder selections with Option + Tab, or use Paste for text, then ask Codex or Claude Code to read the items you need.

How do I open or remove items?

Use Details to choose an item's available actions: open, copy, show in Finder, or remove. In Settings → Open Items, choose where text and code files, images and PDFs, folders, and web links open. You can also choose Finder for files and folders. These choices apply only in cc:; your macOS defaults stay unchanged.

Does cc: copy my files?

Yes. cc: keeps managed copies of files and folders in its local storage. Your source files stay in their original locations.

Does removing an item delete the original?

No. Removing something from the shelf does not remove the original file from its location.

What happens when I quit cc:?

Your shelf and its managed local copies are kept until you remove them. Your chosen shelf location is remembered too.

Does cc: upload anything?

The cc: app keeps shelf records and managed copies on your Mac. cc: itself does not upload your files or clipboard contents, sync the shelf, or collect usage data.

Does it work on a Mac without a notch?

Yes. The menu bar shelf is the default. Notch is an optional shelf location on supported Macs; other displays use the menu bar.

Can I use it on Intel Macs?

Yes. The current universal build supports both Apple Silicon and Intel Macs running macOS 26 or later.

You and your agent.One shared shelf.