Allows for programmatic management of the Arc browser, providing tools to list, create, delete, and focus spaces, as well as manage tabs and open URLs.
Click on "Install Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@arc-mcplist all my open tabs in the Work space"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
arc-mcp
MCP (Model Context Protocol) server for Arc browser. Manage spaces and tabs programmatically.
Features
List spaces - Get all Arc browser spaces
Create space - Create new spaces with custom names and icons
Delete space - Remove spaces
Focus space - Switch to a specific space (AppleScript)
List tabs - Get tabs from all spaces or a specific space
Add tab - Add tabs to spaces
Delete tab - Remove tabs
Open URL - Open URLs in Arc immediately (AppleScript)
Requirements
macOS (Arc browser is macOS-only)
Arc browser installed
Arc Sync must be disabled for space/tab modifications to persist
Installation
Usage
With Claude Code
Add to your Claude Code MCP settings:
Running directly
Tools
list_spaces
List all Arc browser spaces.
create_space
Create a new space.
Parameter | Type | Required | Description |
name | string | Yes | Name of the new space |
icon | string | No | Emoji or SF Symbol name (default: "star") |
delete_space
Delete a space.
Parameter | Type | Required | Description |
space | string | Yes | Name or ID of space to delete |
focus_space
Switch to a space (uses AppleScript).
Parameter | Type | Required | Description |
space | string | Yes | Name or ID of space to focus |
list_tabs
List tabs, optionally filtered by space.
Parameter | Type | Required | Description |
space | string | No | Name or ID of space to filter by |
add_tab
Add a tab to a space. Requires Arc restart.
Parameter | Type | Required | Description |
space | string | Yes | Name or ID of space |
url | string | Yes | URL for the tab |
title | string | No | Tab title (defaults to URL) |
pinned | boolean | No | Add as pinned tab (default: false) |
delete_tab
Delete a tab by ID. Requires Arc restart.
Parameter | Type | Required | Description |
tabId | string | Yes | ID of tab to delete |
open_url
Open a URL immediately in Arc (uses AppleScript).
Parameter | Type | Required | Description |
url | string | Yes | URL to open |
space | string | No | Space to open the URL in |
Important Notes
Arc Sync: For space/tab modifications to persist, disable Arc Sync in Arc settings. Otherwise, the sync will overwrite local changes.
Restart Required: Most modifications (create/delete space, add/delete tab) require restarting Arc to take effect.
Backup: The server automatically creates backups before modifying Arc's sidebar data.
How It Works
Arc stores its sidebar data in ~/Library/Application Support/Arc/StorableSidebar.json. This MCP server reads and modifies that file directly for space and tab management.
For immediate actions (focus space, open URL), it uses AppleScript to control Arc.
License
MIT