safari-devtools-mcp

v1.2.0

Published

2 hours ago

Safari DevTools MCP — real browser debugging with network interception, DOM inspection, cookie/storage management, and CSS analysis for AI agents on macOS

Safari DevTools MCP

safari-devtools-mcp lets your coding agent (such as Claude, Cursor, Copilot or Gemini) control and inspect a live Safari browser on macOS. It acts as a Model-Context-Protocol (MCP) server, giving your AI coding assistant access to Safari DevTools for debugging, automation, and testing.

Chrome developers get powerful AI debugging through chrome-devtools-mcp by Google. Safari developers should have something equivalent — this project brings that same experience to Safari, with matching tool names and parameter schemas so you can swap between browsers with minimal friction.

Changelog | Contributing

Note: This server exposes browser content (page data, console logs, network traffic) to MCP clients. Avoid browsing sensitive websites or entering credentials while a session is active.

Why safari-devtools-mcp?

This project uses WebDriver for capabilities that scripting alone cannot provide:

Network request/response body capture — intercepts fetch and XHR calls with full headers, payloads, and timing
DOM snapshots via accessibility tree — stable element UIDs that survive page re-renders, not brittle CSS selectors
CSS computed style inspection — read any computed property from any element
Cookie and storage management — read, write, and delete cookies, localStorage, and sessionStorage
Element-level screenshots — capture individual elements, not just the full viewport
Session auto-recovery — detects dead SafariDriver sessions and reconnects transparently

Key features

Browser debugging: Capture console logs, inspect network requests, and evaluate JavaScript — with stack traces and full request/response details.
Reliable automation: Click, type, fill forms, drag and drop, and press keyboard shortcuts using accessibility-tree snapshots with stable UIDs.
Native macOS integration: Tab management via AppleScript for listing, switching, and controlling Safari tabs across windows

Requirements

macOS (Safari and SafariDriver are Apple-exclusive)
Node.js 18+ (22+ recommended)
Safari with remote automation enabled

Safari setup

Open Safari > Settings > Advanced > check "Show features for web developers"
Develop menu > check "Allow Remote Automation"
Authorize SafariDriver:
```
sudo safaridriver --enable
```

Getting started

Standard MCP config:

{
  "mcpServers": {
    "safari-devtools": {
      "command": "npx",
      "args": ["-y", "safari-devtools-mcp@latest"]
    }
  }
}

claude mcp add safari-devtools -- npx -y safari-devtools-mcp@latest

Or add to your project's .mcp.json using the standard config above.

Add the standard config to ~/Library/Application Support/Claude/claude_desktop_config.json.

Add the standard config to your Cursor MCP settings.

Add the standard config to .vscode/mcp.json.

copilot mcp add safari-devtools -- npx -y safari-devtools-mcp@latest

gemini mcp add safari-devtools -- npx -y safari-devtools-mcp@latest

Or add the standard config to your ~/.gemini/settings.json.

Add the standard config to your .gemini/settings.json in the project root.

Add the standard config to your .junie/mcp.json in the project root.

Open "Install MCP Server" in Raycast and fill in:

Command: npx
Arguments: -y safari-devtools-mcp@latest

Or copy the standard config JSON above before opening the command — Raycast will auto-fill the form.

Add the standard config to your .vs/mcp.json in the solution root.

Add the standard config to your Warp MCP settings file at ~/.warp/mcp.json.

git clone https://github.com/HayoDev/safari-devtools-mcp.git
cd safari-devtools-mcp
npm install && npm run build

Then point your MCP client to the built entry point:

{
  "mcpServers": {
    "safari-devtools": {
      "command": "node",
      "args": [
        "/path/to/safari-devtools-mcp/build/src/bin/safari-devtools-mcp.js"
      ]
    }
  }
}

Your first prompt

Navigate to https://example.com, take a snapshot, and list any console errors.

Tools (41)

Debugging

| Tool | Description | | ----------------------- | ----------------------------------------------------------------------------- | | list_console_messages | List console messages with filtering by level (log, warn, error) | | get_console_message | Get a detailed message including stack trace and arguments | | clear_console | Clear all captured console messages | | list_network_requests | Monitor network requests — Fetch, XHR, and resource loads | | get_network_request | Get full request/response details with headers and body | | clear_network | Clear all captured network requests | | evaluate_script | Execute JavaScript in the browser context and return results | | take_screenshot | Capture a PNG screenshot of the page or a specific element | | take_snapshot | Accessibility-tree snapshot of the DOM with stable UIDs for element targeting |

Page content

| Tool | Description | | ------------------ | ----------------------------------------------------------- | | get_page_content | Get the page title, URL, and visible text content | | get_html_source | Get the full HTML source of the page | | extract_links | Extract all links with their text, href, and rel attributes | | extract_meta | Extract meta tags (og:, twitter:, description, etc.) |

Navigation

| Tool | Description | | --------------- | ---------------------------------------------------------- | | list_pages | List all open Safari tabs across windows | | select_page | Switch to a specific tab | | new_page | Open a new tab and navigate to a URL | | close_page | Close a tab | | navigate_page | Navigate to a URL, go back, forward, or reload | | wait_for | Wait for specific text to appear on the page | | resize_page | Resize the browser window | | handle_dialog | Accept or dismiss browser dialogs (alert, confirm, prompt) |

Scroll

| Tool | Description | | ------------------- | -------------------------------------------------- | | scroll | Scroll the page in any direction by a given amount | | scroll_to_element | Scroll an element into view by its UID |

CSS inspection

| Tool | Description | | -------------------- | ---------------------------------------------- | | get_computed_style | Get computed CSS styles for any element by UID |

Cookies & storage

| Tool | Description | | ---------------- | ------------------------------------------------------------------ | | get_cookies | Get browser cookies, optionally filtered by name or domain | | set_cookie | Set a cookie with name, value, and optional attributes | | delete_cookie | Delete a cookie by name, or delete all cookies | | get_storage | Read from localStorage or sessionStorage | | set_storage | Write a key-value pair to localStorage or sessionStorage | | delete_storage | Delete a key or clear all entries from localStorage/sessionStorage |

Input automation

| Tool | Description | | --------------- | ---------------------------------------------------- | | click | Click an element by UID from a snapshot | | click_at | Click at specific x/y coordinates | | right_click | Right-click (context menu) on an element | | select_option | Select an option from a dropdown by value or label | | hover | Hover over an element | | fill | Type into an input field or select from a dropdown | | fill_form | Fill multiple form fields at once | | type_text | Type text into the currently focused element | | drag | Drag and drop between elements or coordinates | | press_key | Press a key or combination (e.g., Meta+A, Enter) | | upload_file | Upload a file through a file input |

Architecture

MCP Client (Claude, Cursor, etc.)
    | stdio (MCP protocol)
    v
Safari DevTools MCP Server
    |
    v
+-------------------------------+
|  SafariDriver                 |
|  +-- Selenium WebDriver       | <-- Browser automation
|  +-- JS Injection             | <-- Console/Network capture
|  +-- AppleScript (osascript)  | <-- Native tab management
+-------------------------------+
    |
    v
Safari Browser

Known limitations

Single session: Safari only allows one WebDriver session at a time. Running multiple instances is not supported.
macOS only: Safari and SafariDriver are Apple-exclusive — this server does not work on Linux or Windows.
No headless mode: Safari does not support headless operation. A visible browser window is required.
Console pre-injection gap: Console messages logged before the capture script is injected are not captured.
Network pre-injection gap: Network requests made before injection are backfilled via the Performance API with limited detail (timing and size, but no headers or status codes).
PNG only: Safari WebDriver only supports PNG screenshots — no JPEG or WebP. Full-page capture is not available.
AppleScript permissions: Tab management features require macOS Accessibility permissions for osascript.

Credits

chrome-devtools-mcp by Google/ChromeDevTools — the inspiration and interface standard this project mirrors. Tool names and schemas are intentionally compatible so you can switch between Chrome and Safari seamlessly.
safari-mcp-server — prior art for Safari MCP integration that we studied during development.

License

MIT