safari-devtools-mcp

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 Code

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

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

Claude Desktop

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

Cursor

Add the standard config to your Cursor MCP settings.

VS Code

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

Copilot CLI

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

Gemini CLI

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

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

Gemini Code Assist

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

JetBrains AI Assistant & Junie

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

Raycast

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.

Visual Studio

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

Warp

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

From source

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.

Slim mode

Use --slim to reduce token usage with shorter tool descriptions. Useful when working with context-limited models or long conversations:

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

Prompts (skills)

The server exposes guided debugging workflows as MCP prompts. Clients that support prompts (e.g. Claude Desktop, Claude Code) can invoke them by name:

Prompt	Description
safari-devtools	Getting started — tool overview, recommended workflow, and Safari-specific notes
a11y-debugging	Accessibility audit — a11y tree inspection, axe-core injection, WCAG checks
safari-specific-debugging	Debug WebKit quirks — CSS prefixes, JS feature gaps, ITP/CORS issues
performance-debugging	Performance analysis — Navigation Timing, Core Web Vitals, resource waterfall

Tools (45)

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

iOS Safari validation

Tool	Description
inspect_viewport_meta	Parse the viewport meta tag and validate against iOS best practices (width, zoom, viewport-fit)
get_safe_area_insets	Read CSS safe-area-inset values and check whether the page handles notched devices correctly
check_ios_web_app_readiness	Audit the page for Add to Home Screen / PWA readiness (apple-touch-icon, manifest, splash screens, status bar)
check_webkit_compatibility	Check page CSS against the live Safari session via CSS.supports()

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