feat: experimental Chrome DevTools CLI

package.json

@@ -3,7 +3,10 @@
   "version": "0.19.0",
   "description": "MCP server for Chrome DevTools",
   "type": "module",
-  "bin": "./build/src/bin/chrome-devtools-mcp.js",
+  "bin": {
+    "chrome-devtools-mcp": "./build/src/bin/chrome-devtools-mcp.js",
+    "chrome-devtools": "./build/src/bin/chrome-devtools.js"
+  },
   "main": "./build/src/index.js",
   "scripts": {
     "cli:generate": "node --experimental-strip-types scripts/generate-cli.ts",

skills/chrome-devtools-cli/SKILL.md

@@ -0,0 +1,132 @@
+---
+name: chrome-devtools-cli
+description: Use this to skill to write shell scripts or run shell commands to automate tasks in the browser or otherwise use Chrome DevTools via CLI.
+---
+
+The `chrome-devtools-mcp` CLI lets you interact with the browser from your terminal.
+
+## Setup
+
+_Note: If this is your very first time using the CLI, see [references/installation.md](references/installation.md) for setup. Installation is a one-time prerequisite and is **not** part of the regular AI workflow._
+
+## AI Workflow
+
+1. **Execute**: Run tools directly (e.g., `chrome-devtools list_pages`). The background server starts implicitly; **do not** run `start`/`status`/`stop` before each use.
+2. **Inspect**: Use `take_snapshot` to get an element `<uid>`.
+3. **Act**: Use `click`, `fill`, etc. State persists across commands.
+
+Snapshot example:
+
+```
+uid=1_0 RootWebArea "Example Domain" url="https://example.com/"
+  uid=1_1 heading "Example Domain" level="1"
+```
+
+## Command Usage
+
+```sh
+chrome-devtools <tool> [arguments] [flags]
+```
+
+Use `--help` on any command. Output defaults to Markdown, use `--output-format=json` for JSON.
+
+## Input Automation (<uid> from snapshot)
+
+```bash
+chrome-devtools take_snapshot --help # Help message for commands, works for any command.
+chrome-devtools take_snapshot # Take a text snapshot of the page to get UIDs for elements
+chrome-devtools click "id" # Clicks on the provided element
+chrome-devtools click "id" --dblClick true --includeSnapshot true # Double clicks and returns a snapshot
+chrome-devtools drag "src" "dst" # Drag an element onto another element
+chrome-devtools drag "src" "dst" --includeSnapshot true # Drag an element and return a snapshot
+chrome-devtools fill "id" "text" # Type text into an input or select an option
+chrome-devtools fill "id" "text" --includeSnapshot true # Fill an element and return a snapshot
+chrome-devtools handle_dialog accept # Handle a browser dialog
+chrome-devtools handle_dialog dismiss --promptText "hi" # Dismiss a dialog with prompt text
+chrome-devtools hover "id" # Hover over the provided element
+chrome-devtools hover "id" --includeSnapshot true # Hover over an element and return a snapshot
+chrome-devtools press_key "Enter" # Press a key or key combination
+chrome-devtools press_key "Control+A" --includeSnapshot true # Press a key and return a snapshot
+chrome-devtools type_text "hello" # Type text using keyboard into a focused input
+chrome-devtools type_text "hello" --submitKey "Enter" # Type text and press a submit key
+chrome-devtools upload_file "id" "file.txt" # Upload a file through a provided element
+chrome-devtools upload_file "id" "file.txt" --includeSnapshot true # Upload a file and return a snapshot
+```
+
+## Navigation
+
+```bash
+chrome-devtools close_page 1 # Closes the page by its index
+chrome-devtools list_pages # Get a list of pages open in the browser
+chrome-devtools navigate_page --url "https://example.com" # Navigates the currently selected page to a URL
+chrome-devtools navigate_page --type "reload" --ignoreCache true # Reload page ignoring cache
+chrome-devtools navigate_page --url "https://example.com" --timeout 5000 # Navigate with a timeout
+chrome-devtools navigate_page --handleBeforeUnload "accept" # Handle before unload dialog
+chrome-devtools navigate_page --type "back" --initScript "foo()" # Navigate back and run an init script
+chrome-devtools new_page "https://example.com" # Creates a new page
+chrome-devtools new_page "https://example.com" --background true --timeout 5000 # Create new page in background
+chrome-devtools new_page "https://example.com" --isolatedContext "ctx" # Create new page with isolated context
+chrome-devtools select_page 1 # Select a page as a context for future tool calls
+chrome-devtools select_page 1 --bringToFront true # Select a page and bring it to front
+```
+
+## Emulation
+
+```bash
+chrome-devtools emulate --networkConditions "Offline" # Emulate network conditions
+chrome-devtools emulate --cpuThrottlingRate 4 --geolocation "0,0" # Emulate CPU throttling and geolocation
+chrome-devtools emulate --colorScheme "dark" --viewport "1920x1080" # Emulate color scheme and viewport
+chrome-devtools emulate --userAgent "Mozilla/5.0..." # Emulate user agent
+chrome-devtools resize_page 1920 1080 # Resizes the selected page's window
+```
+
+## Performance
+
+```bash
+chrome-devtools performance_analyze_insight "1" "LCPBreakdown" # Get more details on a specific Performance Insight
+chrome-devtools performance_start_trace true false # Starts a performance trace recording
+chrome-devtools performance_start_trace true true --filePath t.gz # Start trace and save to a file
+chrome-devtools performance_stop_trace # Stops the active performance trace
+chrome-devtools performance_stop_trace --filePath "t.json" # Stop trace and save to a file
+chrome-devtools take_memory_snapshot "./snap.heapsnapshot" # Capture a memory heapsnapshot
+```
+
+## Network
+
+```bash
+chrome-devtools get_network_request # Get the currently selected network request
+chrome-devtools get_network_request --reqid 1 --requestFilePath req.md # Get request by id and save to file
+chrome-devtools get_network_request --responseFilePath res.md # Save response body to file
+chrome-devtools list_network_requests # List all network requests
+chrome-devtools list_network_requests --pageSize 50 --pageIdx 0 # List network requests with pagination
+chrome-devtools list_network_requests --resourceTypes Fetch # Filter requests by resource type
+chrome-devtools list_network_requests --includePreservedRequests true # Include preserved requests
+```
+
+## Debugging & Inspection
+
+```bash
+chrome-devtools evaluate_script "() => document.title" # Evaluate a JavaScript function on the page
+evaluate_script "(a) => a.innerText" --args 1_4 # Evaluate JS with UID arguments
+chrome-devtools get_console_message 1 # Gets a console message by its ID
+chrome-devtools lighthouse_audit --mode "navigation" # Run Lighthouse audit for navigation
+chrome-devtools lighthouse_audit --mode "snapshot" --device "mobile" # Run Lighthouse audit for a snapshot on mobile
+chrome-devtools lighthouse_audit --outputDirPath ./out # Run Lighthouse audit and save reports
+chrome-devtools list_console_messages # List all console messages
+chrome-devtools list_console_messages --pageSize 20 --pageIdx 1 # List console messages with pagination
+chrome-devtools list_console_messages --types error --types info # Filter console messages by type
+chrome-devtools list_console_messages --includePreservedMessages true # Include preserved messages
+chrome-devtools take_screenshot # Take a screenshot of the page viewport
+chrome-devtools take_screenshot --fullPage true --format "jpeg" --quality 80 # Take a full page screenshot as JPEG with quality
+chrome-devtools take_screenshot --uid "id" --filePath "s.png" # Take a screenshot of an element
+chrome-devtools take_snapshot # Take a text snapshot of the page from the a11y tree
+chrome-devtools take_snapshot --verbose true --filePath "s.txt" # Take a verbose snapshot and save to file
+```
+
+## Service Management
+
+```bash
+chrome-devtools start   # Start or restart chrome-devtools-mcp
+chrome-devtools status  # Checks if chrome-devtools-mcp is running
+chrome-devtools stop    # Stop chrome-devtools-mcp if any
+```

skills/chrome-devtools-cli/references/installation.md

@@ -0,0 +1,14 @@
+# Installation
+
+Install the package globally to make the `chrome-devtools` command available. You only need to do this the first time you use it.
+
+```sh
+npm i chrome-devtools-mcp@latest -g
+chrome-devtools status # check if install worked.
+```
+
+## Troubleshooting
+
+- **Command not found:** If `chrome-devtools` is not recognized, ensure your global npm `bin` directory is in your system's `PATH`. Restart your terminal or source your shell configuration file (e.g., `.bashrc`, `.zshrc`).
+- **Permission errors:** If you encounter `EACCES` or permission errors during installation, avoid using `sudo`. Instead, use a node version manager like `nvm`, or configure npm to use a different global directory.
+- **Old version running:** Run `chrome-devtools stop && npm uninstall -g chrome-devtools-mcp` before reinstalling, or ensure the latest version is being picked up by your path.