Chrome DevTools MCP

Tools 59

click

Clicks on the provided element

drag

Drag an element onto another element

fill

Type text into an input, text area or select an option from a <select> element.

fill_form

Fill out multiple form elements (inputs, selects, checkboxes, radios) at once. ALWAYS prefer this tool over multiple individual 'fill' or 'click' calls when interacting with forms. It is significantly faster, more reliable, and reduces turn count. Example: Fill username, password, and check...

handle_dialog

If a browser dialog was opened, use this command to handle it

hover

Hover over the provided element

press_key

Press a key or key combination. Use this when other input methods like fill() cannot be used (e.g., keyboard shortcuts, navigation keys, or special key combinations).

type_text

Type text using keyboard into a previously focused input

upload_file

Upload a file through a provided element.

click_at

Clicks at the provided coordinates (requires flag: --experimentalVision=true)

close_page

Closes the page by its index. The last open page cannot be closed.

list_pages

Get a list of pages open in the browser.

navigate_page

Go to a URL, or back, forward, or reload. Use project URL if not specified otherwise.

new_page

Open a new tab and load a URL. Use project URL if not specified otherwise.

select_page

Select a page as a context for future tool calls.

wait_for

Wait for the specified text to appear on the selected page.

emulate

Emulates various features on the target page.

resize_page

Resizes the page's window so that the page has specified dimension

performance_analyze_insight

Provides more detailed information on a specific Performance Insight of an insight set that was highlighted in the results of a trace recording.

performance_start_trace

Start a performance trace on the target webpage. Use to find frontend performance issues, Core Web Vitals (LCP, INP, CLS), and improve page load speed.

performance_stop_trace

Stop the active performance trace recording on the target webpage.

get_network_request

Gets a network request by an optional reqid, if omitted returns the currently selected request in the DevTools Network panel. Useful for inspecting request headers (including 'Cookie') and response headers (including 'Set-Cookie' and directives).

list_network_requests

Lists the most recent requests for the target page since the last navigation.

evaluate_script

Evaluate JavaScript inside the target page. The source can be provided inline or loaded from a local file. Returns the response as JSON, so returned values have to be JSON-serializable.

get_console_message

Gets a console message by its ID. You can get all messages by calling list_console_messages.

get_css_styles

Retrieve matched CSS rules, inline styles (element.style), inherited styles, custom properties, and cascade wrappers (@layer, @media, @container, @scope) for an element identified by its UID.

lighthouse_audit

Get Lighthouse score and reports for accessibility, SEO, best practices, and agentic browsing. This excludes performance. For performance audits, run performance_start_trace

list_console_messages

List all console messages for the target page since the last navigation.

take_screenshot

Take a screenshot of the page or element.

take_snapshot

Take a text snapshot of the target page based on the a11y tree. The snapshot lists page elements along with a unique

screencast_start

Starts recording a screencast (video) of the target page in specified format. (requires flag: --experimentalScreencast=true)

screencast_stop

Stops the active screencast recording on the target page. (requires flag: --experimentalScreencast=true)

take_heapsnapshot

Capture a heap snapshot of the target page. Use to analyze the memory distribution of JavaScript objects and debug memory leaks.

analyze_heapsnapshot_contexts

Loads a memory heapsnapshot to identify and rank closure contexts holding dead captured fields—variables no remaining live closure can read. Scopes are ranked globally by the retained size of these dead values to provide a prioritizing heuristic, rather than an exact measure of reclaimable...

close_heapsnapshot

Closes a previously loaded memory heapsnapshot, freeing its memory. (requires flag: --memoryDebugging=true)

compare_heapsnapshots

Loads two memory heapsnapshots and returns the comparison. If classIndex is provided, returns detailed diff for that class, otherwise returns summary diff. (requires flag: --memoryDebugging=true)

get_heapsnapshot_class_nodes

Loads a memory heapsnapshot and returns instances of a specific class with their IDs. (requires flag: --memoryDebugging=true)

get_heapsnapshot_details

Loads a memory heapsnapshot and returns all available information including statistics, static data, and aggregated node information. Supports pagination for aggregates. (requires flag: --memoryDebugging=true)

get_heapsnapshot_dominators

Loads a memory heapsnapshot and returns the dominator chain for a specific node ID. This helps to identify which objects are keeping the target node alive. (requires flag: --memoryDebugging=true)

get_heapsnapshot_duplicate_strings

Loads a memory heapsnapshot and returns duplicate strings grouped by their value. (requires flag: --memoryDebugging=true)

get_heapsnapshot_edges

Loads a memory heapsnapshot and returns outgoing edges (references) for a specific node ID. (requires flag: --memoryDebugging=true)

get_heapsnapshot_object_details

Loads a memory heapsnapshot and returns detailed information about a specific object by its node ID, including size, type, distance, and DOM detachedness. (requires flag: --memoryDebugging=true)

get_heapsnapshot_retainers

Loads a memory heapsnapshot and returns retainers for a specific node ID. (requires flag: --memoryDebugging=true)

get_heapsnapshot_retaining_paths

Loads a memory heapsnapshot and returns retaining paths for a specific node ID. This helps to understand why a node is not being garbage collected. (requires flag: --memoryDebugging=true)

get_heapsnapshot_summary

Loads a memory heapsnapshot and returns snapshot summary stats, including native contexts and their sizes, and retained by context summary. (requires flag: --memoryDebugging=true)

query_heapsnapshot_objects

Loads a memory heapsnapshot and queries objects matching specific filters (className, propertyName, nodeType, retainedSize, selfSize, isDetached, sortBy). (requires flag: --memoryDebugging=true)

install_extension

Installs a Chrome extension from the given path. (requires flag: --categoryExtensions=true)

list_extensions

Lists all the Chrome extensions installed in the browser. This includes their name, ID, version, and enabled status. (requires flag: --categoryExtensions=true)

reload_extension

Reloads an unpacked Chrome extension by its ID. (requires flag: --categoryExtensions=true)

trigger_extension_action

Triggers the default action of an extension by its ID. (requires flag: --categoryExtensions=true)

uninstall_extension

Uninstalls a Chrome extension by its ID. (requires flag: --categoryExtensions=true)

execute_3p_developer_tool

Executes a tool exposed by the page. (requires flag: --categoryExperimentalThirdParty=true)

list_3p_developer_tools

Lists all third-party developer tools the page exposes for providing runtime information.

execute_webmcp_tool

Executes a WebMCP tool exposed by the page. (requires flag: --categoryExperimentalWebmcp=true)

list_webmcp_tools

Lists all WebMCP tools the page exposes. (requires flag: --categoryExperimentalWebmcp=true)

get_os_app_state

Returns the OS integration state (badge count and registered file handlers) for an installed web app, identified by its manifest ID. (requires flag: --categoryPwa=true)

install_pwa

Installs a Progressive Web App (PWA) identified by its manifest ID. This installs through the PWA CDP domain without a user gesture or install dialog. DevTools installs default to browser display mode. (requires flag: --categoryPwa=true)

launch_pwa

Launches an installed Progressive Web App using its saved display mode. Optionally opens a specific URL within the same app instead of the default start URL. (requires flag: --categoryPwa=true)

uninstall_pwa

Uninstalls a Progressive Web App identified by its manifest ID and closes any open app windows. (requires flag: --categoryPwa=true)