### Profiler.start

Source: https://chromedevtools.github.io/devtools-protocol/tot/Profiler

Starts collecting a CPU profile.

```APIDOC
## Profiler.start

### Description
Starts collecting a CPU profile.

### Method
POST

### Endpoint
/

### Request Body
{
  "method": "Profiler.start"
}
```

--------------------------------

### Extensions.loadUnpacked

Source: https://chromedevtools.github.io/devtools-protocol/tot/Extensions

Installs an unpacked extension from the filesystem.

```APIDOC
## Extensions.loadUnpacked

### Description
Installs an unpacked extension from the filesystem similar to --load-extension CLI flags. Returns extension ID once the extension has been installed.

### Method
POST

### Endpoint
/json/protocol/Extensions.loadUnpacked

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
- **path** (string) - Required - Absolute file path.
- **enableInIncognito** (boolean) - Optional - Enable the extension in incognito.

### Request Example
```json
{
  "path": "/path/to/unpacked/extension",
  "enableInIncognito": false
}
```

### Response
#### Success Response (200)
- **id** (string) - Extension id.

#### Response Example
```json
{
  "result": {
    "id": "extensionId"
  }
}
```
```

--------------------------------

### PWA.install

Source: https://chromedevtools.github.io/devtools-protocol/tot/PWA

Installs the given manifest identity, optionally using the provided install URL. Supports different installation modes including file and dev proxy.

```APIDOC
## PWA.install

### Description
Installs the given manifest identity, optionally using the given installUrlOrBundleUrl
IWA-specific install description: manifestId corresponds to isolated-app:// + web_package::SignedWebBundleId
File installation mode: The installUrlOrBundleUrl can be either file:// or http(s):// pointing to a signed web bundle (.swbn). In this case SignedWebBundleId must correspond to The .swbn file's signing key.
Dev proxy installation mode: installUrlOrBundleUrl must be http(s):// that serves dev mode IWA. web_package::SignedWebBundleId must be of type dev proxy.
The advantage of dev proxy mode is that all changes to IWA automatically will be reflected in the running app without reinstallation.
To generate bundle id for proxy mode:
  1. Generate 32 random bytes.
  2. Add a specific suffix at the end following the documentation https://github.com/WICG/isolated-web-apps/blob/main/Scheme.md#suffix
  3. Encode the entire sequence using Base32 without padding.

If Chrome is not in IWA dev mode, the installation will fail, regardless of the state of the allowlist.

### Parameters
#### Path Parameters
* **manifestId** (string) - Required - The manifest identifier for the web app.
* **installUrlOrBundleUrl** (string) - Optional - The location of the app or bundle overriding the one derived from the manifestId.
```

--------------------------------

### Memory.startSampling

Source: https://chromedevtools.github.io/devtools-protocol/tot/Memory

Starts collecting the native memory profile.

```APIDOC
## Memory.startSampling

### Description
Start collecting native memory profile.

### Method
POST

### Endpoint
/json/protocol/Memory.startSampling

### Parameters
#### Request Body
- **samplingInterval** (integer) - Optional - Average number of bytes between samples.
- **suppressRandomness** (boolean) - Optional - Do not randomize intervals between samples.
```

--------------------------------

### PWA.launch

Source: https://chromedevtools.github.io/devtools-protocol/tot/PWA

Launches the installed web app. Optionally, a URL can be provided to launch the app at a specific page instead of the default start URL.

```APIDOC
## PWA.launch

### Description
Launches the installed web app, or an url in the same web app instead of the default start url if it is provided. Returns a page Target.TargetID which can be used to attach to via Target.attachToTarget or similar APIs.

### Parameters
#### Path Parameters
* **manifestId** (string) - Required - The manifest identifier for the web app.
* **url** (string) - Optional - The specific URL to launch within the web app.

### Return Object
#### Success Response
* **targetId** (Target.TargetID) - ID of the tab target created as a result.
```

--------------------------------

### CSS.CSSStartingStyle

Source: https://chromedevtools.github.io/devtools-protocol/tot/CSS

Represents a CSS Starting Style at-rule descriptor.

```APIDOC
## CSS.CSSStartingStyle

### Description
CSS Starting Style at-rule descriptor.

### Type
object

### Properties
- **range** (SourceRange) - The associated rule header range in the enclosing stylesheet (if available).
- **styleSheetId** (DOM.StyleSheetId) - Identifier of the stylesheet containing this object (if exists).
```

--------------------------------

### Page.startScreencast

Source: https://chromedevtools.github.io/devtools-protocol/tot/Page

Starts sending each frame using the `screencastFrame` event.

```APIDOC
## Page.startScreencast Experimental

### Description
Starts sending each frame using the `screencastFrame` event.

### Parameters
#### Path Parameters
* **format** (string) - Required - Image compression format.
Allowed Values: `jpeg`, `png`
* **quality** (integer) - Optional - Compression quality from range [0..100].
* **maxWidth** (integer) - Optional - Maximum screenshot width.
* **maxHeight** (integer) - Optional - Maximum screenshot height.
* **everyNthFrame** (integer) - Optional - Send every n-th frame.
```

--------------------------------

### Page.downloadWillBegin

Source: https://chromedevtools.github.io/devtools-protocol/tot/Page

Fired when page is about to start a download. Deprecated. Use Browser.downloadWillBegin instead.

```APIDOC
## Page.downloadWillBegin ExperimentalDeprecated

### Description
Fired when page is about to start a download. Deprecated. Use Browser.downloadWillBegin instead.

### Parameters
#### Path Parameters
- **frameId** (FrameId) - Required - Id of the frame that caused download to begin.
- **guid** (string) - Required - Global unique identifier of the download.
- **url** (string) - Required - URL of the resource being downloaded.
- **suggestedFilename** (string) - Required - Suggested file name of the resource (the actual name of the file saved on disk may differ).
```

--------------------------------

### Page.getInstallabilityErrors

Source: https://chromedevtools.github.io/devtools-protocol/tot/Page

Retrieves a list of errors related to the installability of the web application.

```APIDOC
## Page.getInstallabilityErrors

### Description
Returns installability errors for the current page.

### Return Object
#### Success Response (200)
- **installabilityErrors** (array[ InstallabilityError ]) - An array of installability errors.

```

--------------------------------

### Page.frameStartedLoading

Source: https://chromedevtools.github.io/devtools-protocol/tot/Page

Fired when frame has started loading. Experimental.

```APIDOC
## Page.frameStartedLoading

### Description
Fired when frame has started loading. Experimental.

### Parameters
#### Path Parameters
- **frameId** (FrameId) - Required - Id of the frame that has started loading.
```

--------------------------------

### HeapProfiler.startSampling

Source: https://chromedevtools.github.io/devtools-protocol/tot/HeapProfiler

Starts a sampling heap profiler. This call is not supported by all JavaScript engines.

```APIDOC
## HeapProfiler.startSampling

### Description
Starts a sampling heap profiler. This call is not supported by all JavaScript engines.

### Parameters
#### Path Parameters
- **samplingInterval** (number) - Optional - Average sample interval in bytes. Poisson distribution is used for the intervals. The default value is 32768 bytes.
- **stackDepth** (number) - Optional - Maximum stack depth. The default value is 128.
- **includeObjectsCollectedByMajorGC** (boolean) - Optional - By default, the sampling heap profiler reports only objects which are still alive when the profile is returned via getSamplingProfile or stopSampling, which is useful for determining what functions contribute the most to steady-state memory usage. This flag instructs the sampling heap profiler to also include information about objects discarded by major GC, which will show which functions cause large temporary memory usage or long GC pauses.
- **includeObjectsCollectedByMinorGC** (boolean) - Optional - By default, the sampling heap profiler reports only objects which are still alive when the profile is returned via getSamplingProfile or stopSampling, which is useful for determining what functions contribute the most to steady-state memory usage. This flag instructs the sampling heap profiler to also include information about objects discarded by minor GC, which is useful when tuning a latency-sensitive application for minimal GC activity.
```

--------------------------------

### Extensions.getExtensions

Source: https://chromedevtools.github.io/devtools-protocol/tot/Extensions

Gets a list of all unpacked extensions.

```APIDOC
## Extensions.getExtensions

### Description
Gets a list of all unpacked extensions.

### Method
GET

### Endpoint
/json/protocol/Extensions.getExtensions

### Parameters
#### Path Parameters
None

#### Query Parameters
None

### Request Example
```json
{}
```

### Response
#### Success Response (200)
- **extensions** (array[ExtensionInfo]) - List of unpacked extensions.

#### Response Example
```json
{
  "result": {
    "extensions": [
      {
        "id": "extensionId",
        "name": "Extension Name",
        "version": "1.0",
        "path": "/path/to/extension",
        "enabled": true
      }
    ]
  }
}
```
```

--------------------------------

### WebAudio.enable

Source: https://chromedevtools.github.io/devtools-protocol/tot/WebAudio

Enables the WebAudio domain and starts sending context lifetime events. This is typically the first step before interacting with WebAudio features.

```APIDOC
## WebAudio.enable

### Description
Enables the WebAudio domain and starts sending context lifetime events.

### Method
POST

### Endpoint
/json/protocol/WebAudio.enable
```

--------------------------------

### PWA.launchFilesInApp

Source: https://chromedevtools.github.io/devtools-protocol/tot/PWA

Opens one or more local files within an installed web app that has registered file handlers. Returns Target IDs for the pages handling the files.

```APIDOC
## PWA.launchFilesInApp

### Description
Opens one or more local files from an installed web app identified by its manifestId. The web app needs to have file handlers registered to process the files. The API returns one or more page Target.TargetIDs which can be used to attach to via Target.attachToTarget or similar APIs. If some files in the parameters cannot be handled by the web app, they will be ignored. If none of the files can be handled, this API returns an error. If no files are provided as the parameter, this API also returns an error.
According to the definition of the file handlers in the manifest file, one Target.TargetID may represent a page handling one or more files. The order of the returned Target.TargetIDs is not guaranteed.
TODO(crbug.com/339454034): Check the existences of the input files.

### Parameters
#### Path Parameters
* **manifestId** (string) - Required - The manifest identifier for the web app.
* **files** (array[ string ]) - Required - An array of file paths to be opened.

### Return Object
#### Success Response
* **targetIds** (array[ Target.TargetID ]) - IDs of the tab targets created as the result.
```

--------------------------------

### HeapProfiler.startTrackingHeapObjects

Source: https://chromedevtools.github.io/devtools-protocol/tot/HeapProfiler

Start tracking object allocations. This call is not supported by all JavaScript engines.

```APIDOC
## HeapProfiler.startTrackingHeapObjects

### Description
Start tracking object allocations. This call is not supported by all JavaScript engines.

### Parameters
#### Path Parameters
- **trackAllocations** (boolean) - Required
```

--------------------------------

### Tracing.start

Source: https://chromedevtools.github.io/devtools-protocol/tot/Tracing

Starts trace events collection. This method initiates the process of gathering tracing data, with various options to configure the categories, buffer usage, and transfer mode.

```APIDOC
## Tracing.start

### Description
Start trace events collection.

### Method
POST

### Endpoint
/json/protocol/Tracing.start

### Parameters
#### Request Body
- **categories** (string) - Optional - Category/tag filter. Experimental, Deprecated.
- **options** (string) - Optional - Tracing options. Experimental, Deprecated.
- **bufferUsageReportingInterval** (number) - Optional - If set, the agent will issue bufferUsage events at this interval, specified in milliseconds. Experimental.
- **transferMode** (string) - Optional - Whether to report trace events as series of dataCollected events or to save trace to a stream (defaults to `ReportEvents`). Allowed Values: `ReportEvents`, `ReturnAsStream`.
- **streamFormat** (StreamFormat) - Optional - Trace data format to use. This only applies when using `ReturnAsStream` transfer mode (defaults to `json`).
- **streamCompression** (StreamCompression) - Optional - Compression format to use. This only applies when using `ReturnAsStream` transfer mode (defaults to `none`). Experimental.
- **traceConfig** (TraceConfig) - Optional.
- **perfettoConfig** (string) - Optional - Base64-encoded serialized perfetto.protos.TraceConfig protobuf message. When specified, the parameters `categories`, `options`, `traceConfig` are ignored. (Encoded as a base64 string when passed over JSON). Experimental.
- **tracingBackend** (TracingBackend) - Optional - Backend type (defaults to `auto`). Experimental.

### Request Example
```json
{
  "categories": "devtools.timeline",
  "transferMode": "ReturnAsStream",
  "traceConfig": {
    "recordMode": "recordContinuously",
    "traceBufferSizeInKb": 100000,
    "enableSampling": true
  }
}
```

### Response
#### Success Response (200)
- **status** (string) - Indicates the success of the operation.
```

--------------------------------

### Log.startViolationsReport

Source: https://chromedevtools.github.io/devtools-protocol/tot/Log

Starts violation reporting with a specified configuration. This allows the client to receive notifications for specific types of performance violations.

```APIDOC
## Log.startViolationsReport

### Description
Starts violation reporting.

### Method
Log.startViolationsReport

### Parameters
#### Request Body
- **config** (array[ViolationSetting]) - Required - Configuration for violations.
```

--------------------------------

### Cast.enable

Source: https://chromedevtools.github.io/devtools-protocol/tot/Cast

Starts observing for available casting sinks and issues. It can filter sinks by a presentation URL and also listens for issue updates.

```APIDOC
## Cast.enable

### Description
Starts observing for sinks that can be used for tab mirroring, and if set, sinks compatible with |presentationUrl| as well. When sinks are found, a |sinksUpdated| event is fired. Also starts observing for issue messages. When an issue is added or removed, an |issueUpdated| event is fired.

### Method
POST

### Endpoint
/json/protocol/Cast.enable

### Parameters
#### Query Parameters
- **presentationUrl** (string) - Optional - Used to filter sinks compatible with a specific presentation URL.

### Response
#### Success Response (200)
An empty object indicating success.
```

--------------------------------

### Runtime.enable

Source: https://chromedevtools.github.io/devtools-protocol/tot/Runtime

Enables reporting of execution contexts creation by means of `executionContextCreated` event. When the reporting gets enabled the event will be sent immediately for each existing execution context.

```APIDOC
## Runtime.enable

### Description
Enables reporting of execution contexts creation by means of `executionContextCreated` event. When the reporting gets enabled the event will be sent immediately for each existing execution context.

### Method
POST

### Endpoint
/json/runtime/enable
```

--------------------------------

### Emulation.setDevicePostureOverride

Source: https://chromedevtools.github.io/devtools-protocol/tot/Emulation

Starts reporting a given posture value to the Device Posture API. This override can also be set within `setDeviceMetricsOverride`.

```APIDOC
## Emulation.setDevicePostureOverride

### Description
Start reporting the given posture value to the Device Posture API. This override can also be set in setDeviceMetricsOverride().

### Method
POST

### Endpoint
/Emulation.setDevicePostureOverride

### Parameters
#### Request Body
- **posture** (DevicePosture) - Required - The device posture to report.
```

--------------------------------

### Page.frameStartedNavigating

Source: https://chromedevtools.github.io/devtools-protocol/tot/Page

Fired when a navigation starts. This event is fired for both renderer-initiated and browser-initiated navigations. For renderer-initiated navigations, the event is fired after `frameRequestedNavigation`. Navigation may still be cancelled after the event is issued. Multiple events can be fired for a single navigation, for example, when a same-document navigation becomes a cross-document navigation (such as in the case of a frameset). Experimental.

```APIDOC
## Page.frameStartedNavigating

### Description
Fired when a navigation starts. This event is fired for both renderer-initiated and browser-initiated navigations. For renderer-initiated navigations, the event is fired after `frameRequestedNavigation`. Navigation may still be cancelled after the event is issued. Multiple events can be fired for a single navigation, for example, when a same-document navigation becomes a cross-document navigation (such as in the case of a frameset). Experimental.

### Parameters
#### Path Parameters
- **frameId** (FrameId) - Required - ID of the frame that is being navigated.
- **url** (string) - Required - The URL the navigation started with. The final URL can be different.
- **loaderId** (Network.LoaderId) - Required - Loader identifier. Even though it is present in case of same-document navigation, the previously committed loaderId would not change unless the navigation changes from a same-document to a cross-document navigation.
- **navigationType** (string) - Required - Allowed Values: `reload`, `reloadBypassingCache`, `restore`, `restoreWithPost`, `historySameDocument`, `historyDifferentDocument`, `sameDocument`, `differentDocument`
```

--------------------------------

### Cast.startDesktopMirroring

Source: https://chromedevtools.github.io/devtools-protocol/tot/Cast

Initiates mirroring of the entire desktop to the specified casting sink.

```APIDOC
## Cast.startDesktopMirroring

### Description
Starts mirroring the desktop to the sink.

### Method
POST

### Endpoint
/json/protocol/Cast.startDesktopMirroring

### Parameters
#### Query Parameters
- **sinkName** (string) - Required - The name of the sink to cast to.

### Response
#### Success Response (200)
An empty object indicating success.
```

--------------------------------

### ServiceWorker.startWorker

Source: https://chromedevtools.github.io/devtools-protocol/tot/ServiceWorker

Start the given Service Worker.

```APIDOC
## ServiceWorker.startWorker

### Description
Start the given Service Worker.

### Method
POST

### Endpoint
/json/protocol

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
- **scopeURL** (string) - Required - The scope URL of the Service Worker.

### Request Example
```json
{
  "id": 1,
  "method": "ServiceWorker.startWorker",
  "params": {
    "scopeURL": "https://example.com/sw.js"
  }
}
```

### Response
#### Success Response (200)
None

#### Response Example
```json
{
  "id": 1,
  "result": {}
}
```
```

--------------------------------

### CSS.forceStartingStyle

Source: https://chromedevtools.github.io/devtools-protocol/tot/CSS

Ensures that the given node is in its starting-style state.

```APIDOC
## CSS.forceStartingStyle #
Ensures that the given node is in its starting-style state.
##### parameters 

nodeId 
     DOM.NodeId
The element id for which to force the starting-style state. 

forced 
     boolean
Boolean indicating if this is on or off.
```

--------------------------------

### DOM.getNodeStackTraces

Source: https://chromedevtools.github.io/devtools-protocol/tot/DOM

Gets stack traces associated with a Node.

```APIDOC
## DOM.getNodeStackTraces Experimental

### Description
Gets stack traces associated with a Node. As of now, only provides stack trace for Node creation.

### Parameters
#### Path Parameters
- **nodeId** (NodeId) - Required - Id of the node to get stack traces for.

### Return Object
#### Success Response (200)
- **creation** (Runtime.StackTrace) - Creation stack trace, if available.
```

--------------------------------

### SystemInfo.getInfo

Source: https://chromedevtools.github.io/devtools-protocol/tot/SystemInfo

Retrieves comprehensive information about the system, including GPU details, model name, and command line arguments.

```APIDOC
## SystemInfo.getInfo

### Description
Returns information about the system.

### Response
#### Success Response (200)
- **gpu** (GPUInfo) - Information about the GPUs on the system.
- **modelName** (string) - A platform-dependent description of the model of the machine.
- **modelVersion** (string) - A platform-dependent description of the version of the machine.
- **commandLine** (string) - The command line string used to launch the browser.
```

--------------------------------

### CSS.startRuleUsageTracking

Source: https://chromedevtools.github.io/devtools-protocol/tot/CSS

Enables the recording of CSS selector usage. This command does not take any parameters.

```APIDOC
## CSS.startRuleUsageTracking

### Description
Enables the selector recording.

### Method
POST

### Endpoint
/CSS.startRuleUsageTracking

### Parameters
#### Path Parameters
- None

#### Query Parameters
- None

#### Request Body
- None

### Request Example
```json
{}
```

### Response
#### Success Response (200)
- None

#### Response Example
```json
{}
```
```

--------------------------------

### Browser.getWindowBounds

Source: https://chromedevtools.github.io/devtools-protocol/tot/Browser

Gets the position and size of the browser window.

```APIDOC
## Browser.getWindowBounds

### Description
Get position and size of the browser window.

### Parameters
#### Path Parameters
- **windowId** (WindowID) - Required - Browser window id.

### Return Object
#### Success Response (200)
- **bounds** (Bounds) - Bounds information of the window. When window state is 'minimized', the restored window position and size are returned.
```

--------------------------------

### Browser.getWindowForTarget

Source: https://chromedevtools.github.io/devtools-protocol/tot/Browser

Gets the browser window that contains the devtools target.

```APIDOC
## Browser.getWindowForTarget

### Description
Get the browser window that contains the devtools target.

### Parameters
#### Path Parameters
- **targetId** (Target.TargetID) - Required - Devtools agent host id. If called as a part of the session, associated targetId is used.

### Return Object
#### Success Response (200)
- **windowId** (WindowID) - Browser window id.
- **bounds** (Bounds) - Bounds information of the window. When window state is 'minimized', the restored window position and size are returned.
```

--------------------------------

### Extensions.getStorageItems

Source: https://chromedevtools.github.io/devtools-protocol/tot/Extensions

Gets data from extension storage in the given storageArea.

```APIDOC
## Extensions.getStorageItems

### Description
Gets data from extension storage in the given `storageArea`. If `keys` is specified, these are used to filter the result.

### Method
POST

### Endpoint
/json/protocol/Extensions.getStorageItems

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
- **id** (string) - Required - ID of extension.
- **storageArea** (StorageArea) - Required - StorageArea to retrieve data from.
- **keys** (array[string]) - Optional - Keys to retrieve.

### Request Example
```json
{
  "id": "extensionId",
  "storageArea": "local",
  "keys": ["key1", "key2"]
}
```

### Response
#### Success Response (200)
- **data** (object) - Retrieved data.

#### Response Example
```json
{
  "result": {
    "data": {
      "key1": "value1",
      "key2": "value2"
    }
  }
}
```
```

--------------------------------

### SmartCardEmulation.establishContextRequested

Source: https://chromedevtools.github.io/devtools-protocol/tot/SmartCardEmulation

Fired when SCardEstablishContext is called.

```APIDOC
## SmartCardEmulation.establishContextRequested

### Description
Fired when |SCardEstablishContext| is called.

### Parameters
- **requestId** (string) - Required - 
```

--------------------------------

### Overlay.GridNodeHighlightConfig

Source: https://chromedevtools.github.io/devtools-protocol/tot/Overlay

Configurations for Persistent Grid Highlight.

```APIDOC
## Overlay.GridNodeHighlightConfig

### Description
Configurations for Persistent Grid Highlight.

### Properties
- **gridHighlightConfig** (GridHighlightConfig) - A descriptor for the highlight appearance.
- **nodeId** (DOM.NodeId) - Identifier of the node to highlight.
```

--------------------------------

### Animation.getPlaybackRate

Source: https://chromedevtools.github.io/devtools-protocol/tot/Animation

Gets the current playback rate for all animations on the page.

```APIDOC
## Animation.getPlaybackRate

### Description
Gets the playback rate of the document timeline.

### Method
POST

### Endpoint
/Animation.getPlaybackRate

### Response
#### Success Response (200)
- **playbackRate** (number) - Playback rate for animations on page.

### Response Example
{
  "playbackRate": 1.0
}
```

--------------------------------

### SmartCardEmulation.enable

Source: https://chromedevtools.github.io/devtools-protocol/tot/SmartCardEmulation

Enables the SmartCardEmulation domain.

```APIDOC
## SmartCardEmulation.enable

### Description
Enables the |SmartCardEmulation| domain.

### Method
POST

### Endpoint
/json/protocol/SmartCardEmulation.enable
```

--------------------------------

### DOM.affectedByStartingStylesFlagUpdated

Source: https://chromedevtools.github.io/devtools-protocol/tot/DOM

Fired when a node's starting styles changes. This event is experimental.

```APIDOC
## DOM.affectedByStartingStylesFlagUpdated Experimental

### Description
Fired when a node's starting styles changes.

### Parameters
#### Request Body
- **nodeId** (DOM.NodeId) - Required - The id of the node.
- **affectedByStartingStyles** (boolean) - Required - If the node has starting styles.
```

--------------------------------

### Network.enableDeviceBoundSessions

Source: https://chromedevtools.github.io/devtools-protocol/tot/Network

Sets up tracking device bound sessions and fetching of initial set of sessions.

```APIDOC
## Network.enableDeviceBoundSessions

### Description
Sets up tracking device bound sessions and fetching of initial set of sessions.

### Parameters
#### Request Body
- **enable** (boolean) - Required - Whether to enable or disable events.
Experimental
```

--------------------------------

### SmartCardEmulation.beginTransactionRequested

Source: https://chromedevtools.github.io/devtools-protocol/tot/SmartCardEmulation

Fired when SCardBeginTransaction is called.

```APIDOC
## SmartCardEmulation.beginTransactionRequested

### Description
Fired when |SCardBeginTransaction| is called.

### Parameters
- **requestId** (string) - Required - 
- **handle** (integer) - Required - 
```

--------------------------------

### Tracing.TracingBackend

Source: https://chromedevtools.github.io/devtools-protocol/tot/Tracing

Backend type to use for tracing. `chrome` uses the Chrome-integrated tracing service and is supported on all platforms. `system` is only supported on Chrome OS and uses the Perfetto system tracing service. `auto` chooses `system` when the perfettoConfig provided to Tracing.start specifies at least one non-Chrome data source; otherwise uses `chrome`.

```APIDOC
## Tracing.TracingBackend

### Description
Backend type to use for tracing. `chrome` uses the Chrome-integrated tracing service and is supported on all platforms. `system` is only supported on Chrome OS and uses the Perfetto system tracing service. `auto` chooses `system` when the perfettoConfig provided to Tracing.start specifies at least one non-Chrome data source; otherwise uses `chrome`.

### Type
string

### Allowed Values
- `auto`
- `chrome`
- `system`
```

--------------------------------

### Storage.getSharedStorageMetadata

Source: https://chromedevtools.github.io/devtools-protocol/tot/Storage

Gets metadata for an origin's shared storage. This is an experimental feature.

```APIDOC
## Storage.getSharedStorageMetadata Experimental

### Description
Gets metadata for an origin's shared storage.

### Endpoint
/json/protocol/Storage.getSharedStorageMetadata

### Parameters
#### Query Parameters
- **ownerOrigin** (string) - Required - The origin for which to retrieve shared storage metadata.

### Response
#### Success Response (200)
- **metadata** (SharedStorageMetadata) - Metadata for the shared storage.
```

--------------------------------

### Browser.getBrowserCommandLine

Source: https://chromedevtools.github.io/devtools-protocol/tot/Browser

Returns the command line switches for the browser process if --enable-automation is present on the command line.

```APIDOC
## Browser.getBrowserCommandLine

### Description
Returns the command line switches for the browser process if, and only if --enable-automation is on the commandline.

### Return Object
#### Success Response (200)
- **arguments** (array[string]) - Commandline parameters
```

--------------------------------

### Target.getDevToolsTarget

Source: https://chromedevtools.github.io/devtools-protocol/tot/Target

Gets the targetId of the DevTools page target opened for the given target (if any).

```APIDOC
## Target.getDevToolsTarget

### Description
Gets the targetId of the DevTools page target opened for the given target (if any).

### Parameters
#### Path Parameters
- None

#### Query Parameters
- None

#### Request Body
- **targetId** (TargetID) - Required - Page or tab target ID.

### Request Example
```json
{
  "targetId": "some target id"
}
```

### Response
#### Success Response (200)
- **targetId** (TargetID) - The targetId of DevTools page target if exists.

#### Response Example
```json
{
  "targetId": "devtools target id"
}
```
```

--------------------------------

### Runtime.EntryPreview

Source: https://chromedevtools.github.io/devtools-protocol/tot/Runtime

Preview of a map or set entry.

```APIDOC
## Runtime.EntryPreview

### Description
Preview of a map or set entry.

### Type
`object`

### Properties
- **key** (Runtime.ObjectPreview) - Preview of the key. Specified for map-like collection entries.
- **value** (Runtime.ObjectPreview) - Preview of the value.
```

--------------------------------

### DeviceAccess.selectPrompt

Source: https://chromedevtools.github.io/devtools-protocol/tot/DeviceAccess

Select a device in response to a DeviceAccess.deviceRequestPrompted event.

```APIDOC
## DeviceAccess.selectPrompt

### Description
Select a device in response to a DeviceAccess.deviceRequestPrompted event.

### Method
POST

### Endpoint
/json/protocol/DeviceAccess.selectPrompt

### Parameters
#### Request Body
- **id** (RequestId) - Required - The ID of the prompt to select.
- **deviceId** (DeviceId) - Required - The ID of the device to select.

```

--------------------------------

### Page.getManifestIcons

Source: https://chromedevtools.github.io/devtools-protocol/tot/Page

Deprecated because it's not guaranteed that the returned icon is in fact the one used for PWA installation.

```APIDOC
## Page.getManifestIcons ExperimentalDeprecated

### Description
Deprecated because it's not guaranteed that the returned icon is in fact the one used for PWA installation.

### Return Object
#### Success Response (200)
* **primaryIcon** (string) -
```

--------------------------------

### Runtime.inspectRequested

Source: https://chromedevtools.github.io/devtools-protocol/tot/Runtime

Issued when an object should be inspected, for example, as a result of an `inspect()` command line API call.

```APIDOC
## Runtime.inspectRequested

### Description
Issued when object should be inspected (for example, as a result of inspect() command line API call).

### Parameters
#### Request Body
- **object** (RemoteObject) - Required - The object to inspect.
- **hints** (object) - Optional - Hints for inspection.
- **executionContextId** (ExecutionContextId) - Required - Identifier of the context where the call was made (Experimental)
```

--------------------------------

### BluetoothEmulation.addService

Source: https://chromedevtools.github.io/devtools-protocol/tot/BluetoothEmulation

Adds a service with a specified UUID to a simulated peripheral.

```APIDOC
## BluetoothEmulation.addService

### Description
Adds a service with |serviceUuid| to the peripheral with |address|.

### Parameters
#### Path Parameters
- **address** (string) - Required - The Bluetooth address of the peripheral.
- **serviceUuid** (string) - Required - The UUID of the service.

### Return Object
#### Success Response
- **serviceId** (string) - An identifier that uniquely represents this service.
```

--------------------------------

### Overlay.enable

Source: https://chromedevtools.github.io/devtools-protocol/tot/Overlay

Enables domain notifications. This method allows the DevTools to start receiving notifications from the Overlay domain.

```APIDOC
## Overlay.enable

### Description
Enables domain notifications.

### Method
POST

### Endpoint
/json/protocol/Overlay.enable

### Parameters
None

### Response
#### Success Response (200)
An empty object indicating success.
```

--------------------------------

### Profiler.setSamplingInterval

Source: https://chromedevtools.github.io/devtools-protocol/tot/Profiler

Changes CPU profiler sampling interval. Must be called before CPU profiles recording started.

```APIDOC
## Profiler.setSamplingInterval

### Description
Changes CPU profiler sampling interval. Must be called before CPU profiles recording started.

### Method
POST

### Endpoint
/

### Parameters
#### Query Parameters
- **interval** (integer) - Required - New sampling interval in microseconds.

### Request Body
{
  "method": "Profiler.setSamplingInterval",
  "params": {
    "interval": 0
  }
}
```

--------------------------------

### LayerTree.enable

Source: https://chromedevtools.github.io/devtools-protocol/tot/LayerTree

Enables compositing tree inspection. Call this method to start receiving layer tree updates.

```APIDOC
## LayerTree.enable

### Description
Enables compositing tree inspection.

### Method
POST

### Endpoint
/LayerTree.enable
```

--------------------------------

### Security.enable

Source: https://chromedevtools.github.io/devtools-protocol/tot/Security

Enables tracking of security state changes. This method allows the protocol to start sending security-related events.

```APIDOC
## Security.enable

### Description
Enables tracking security state changes.

### Method
POST

### Endpoint
/json/protocol/Security.enable
```

--------------------------------

### Preload.preloadingAttemptSourcesUpdated

Source: https://chromedevtools.github.io/devtools-protocol/tot/Preload

Send a list of sources for all preloading attempts in a document.

```APIDOC
## Preload.preloadingAttemptSourcesUpdated

### Description
Send a list of sources for all preloading attempts in a document.

### Event

### Parameters
#### Request Body
- **loaderId** (Network.LoaderId) - Required - 
- **preloadingAttemptSources** (array[ PreloadingAttemptSource ]) - Required - 
```

--------------------------------

### Overlay.FlexNodeHighlightConfig

Source: https://chromedevtools.github.io/devtools-protocol/tot/Overlay

Configuration for highlighting a flex node.

```APIDOC
## Overlay.FlexNodeHighlightConfig

### Description
Configuration for highlighting a flex node.

### Properties
- **flexContainerHighlightConfig** (FlexContainerHighlightConfig) - A descriptor for the highlight appearance of flex containers.
- **nodeId** (DOM.NodeId) - Identifier of the node to highlight.
```

--------------------------------

### Autofill.enable

Source: https://chromedevtools.github.io/devtools-protocol/tot/Autofill

Enables autofill domain notifications. This method allows the DevTools to start receiving events related to autofill.

```APIDOC
## Autofill.enable

### Description
Enables autofill domain notifications.

### Method
POST

### Endpoint
/json/protocol/Autofill.enable
```

--------------------------------

### Overlay.setShowHinge

Source: https://chromedevtools.github.io/devtools-protocol/tot/Overlay

Adds or removes a dual screen device hinge visualization.

```APIDOC
## Overlay.setShowHinge

### Description
Adds a dual screen device hinge visualization.

### Method
Overlay.setShowHinge

### Parameters
#### Path Parameters
- **hingeConfig** (HingeConfig) - Required - Hinge data, null means hideHinge.
```

--------------------------------

### Profiler.takePreciseCoverage

Source: https://chromedevtools.github.io/devtools-protocol/tot/Profiler

Collect coverage data for the current isolate, and resets execution counters. Precise code coverage needs to have started.

```APIDOC
## Profiler.takePreciseCoverage

### Description
Collect coverage data for the current isolate, and resets execution counters. Precise code coverage needs to have started.

### Method
POST

### Endpoint
/

### Request Body
{
  "method": "Profiler.takePreciseCoverage"
}

### Response
#### Success Response (200)
- **result** (array[ ScriptCoverage ]) - Coverage data for the current isolate.
- **timestamp** (number) - Monotonically increasing time (in seconds) when the coverage update was taken in the backend.

### Response Example
{
  "result": [
    {
      "url": "string",
      "functions": [
        {
          "functionName": "string",
          "ranges": [
            {
              "startOffset": 0,
              "endOffset": 0,
              "count": 0
            }
          ],
          "isBlockCoverage": true
        }
      ]
    }
  ],
  "timestamp": 0
}
```

--------------------------------

### BluetoothEmulation.enable

Source: https://chromedevtools.github.io/devtools-protocol/tot/BluetoothEmulation

Enables the Bluetooth emulation domain with specified central state and LE support.

```APIDOC
## BluetoothEmulation.enable

### Description
Enable the BluetoothEmulation domain.

### Parameters
#### Path Parameters
- **state** (CentralState) - Required - State of the simulated central.
- **leSupported** (boolean) - Required - If the simulated central supports low-energy.
```

--------------------------------

### DOMStorage.enable

Source: https://chromedevtools.github.io/devtools-protocol/tot/DOMStorage

Enables storage tracking, ensuring storage events will be delivered to the client.

```APIDOC
## DOMStorage.enable

### Description
Enables storage tracking, storage events will now be delivered to the client.

### Method
POST

### Endpoint
/DOMStorage.enable
```

--------------------------------

### SmartCardEmulation.releaseContextRequested

Source: https://chromedevtools.github.io/devtools-protocol/tot/SmartCardEmulation

Fired when SCardReleaseContext is called.

```APIDOC
## SmartCardEmulation.releaseContextRequested

### Description
Fired when |SCardReleaseContext| is called.

### Parameters
- **requestId** (string) - Required - 
- **contextId** (integer) - Required - 
```

--------------------------------

### Profiler.startPreciseCoverage

Source: https://chromedevtools.github.io/devtools-protocol/tot/Profiler

Enable precise code coverage. Coverage data for JavaScript executed before enabling precise code coverage may be incomplete. Enabling prevents running optimized code and resets execution counters.

```APIDOC
## Profiler.startPreciseCoverage

### Description
Enable precise code coverage. Coverage data for JavaScript executed before enabling precise code coverage may be incomplete. Enabling prevents running optimized code and resets execution counters.

### Method
POST

### Endpoint
/

### Parameters
#### Query Parameters
- **callCount** (boolean) - Optional - Collect accurate call counts beyond simple 'covered' or 'not covered'.
- **detailed** (boolean) - Optional - Collect block-based coverage.
- **allowTriggeredUpdates** (boolean) - Optional - Allow the backend to send updates on its own initiative

### Request Body
{
  "method": "Profiler.startPreciseCoverage",
  "params": {
    "callCount": true,
    "detailed": true,
    "allowTriggeredUpdates": true
  }
}

### Response
#### Success Response (200)
- **timestamp** (number) - Monotonically increasing time (in seconds) when the coverage update was taken in the backend.

### Response Example
{
  "timestamp": 0
}
```

--------------------------------

### Emulation.setDisplayFeaturesOverride

Source: https://chromedevtools.github.io/devtools-protocol/tot/Emulation

Starts using specified display features to populate the Viewport Segments API. This override can also be set within `setDeviceMetricsOverride`.

```APIDOC
## Emulation.setDisplayFeaturesOverride

### Description
Start using the given display features to populate the Viewport Segments API. This override can also be set in setDeviceMetricsOverride().

### Method
POST

### Endpoint
/Emulation.setDisplayFeaturesOverride

### Parameters
#### Request Body
- **features** (array[DisplayFeature]) - Required - The display features to use for the override.
```

--------------------------------

### BluetoothEmulation.simulatePreconnectedPeripheral

Source: https://chromedevtools.github.io/devtools-protocol/tot/BluetoothEmulation

Simulates a peripheral that has already been connected to the system.

```APIDOC
## BluetoothEmulation.simulatePreconnectedPeripheral

### Description
Simulates a peripheral with |address|, |name| and |knownServiceUuids| that has already been connected to the system.

### Parameters
#### Path Parameters
- **address** (string) - Required - The Bluetooth address of the peripheral.
- **name** (string) - Required - The name of the peripheral.
- **manufacturerData** (array[ ManufacturerData ]) - Optional - Manufacturer-specific data.
- **knownServiceUuids** (array[ string ]) - Optional - An array of known service UUIDs.
```

--------------------------------

### Get Protocol Definition

Source: https://chromedevtools.github.io/devtools-protocol

Retrieves the complete DevTools Protocol definition in JSON format. This is useful for understanding the available commands and events.

```APIDOC
## GET /json/protocol/

### Description
The current devtools protocol, as JSON.

### Method
GET

### Endpoint
/json/protocol/

### Response
#### Success Response (200)
- **domains** (array) - An array of protocol domain objects, each defining commands, events, and types for a specific area of the protocol.

### Response Example
```json
{
  "domains": [
      {
          "domain": "Accessibility",
          "experimental": true,
          "dependencies": [
              "DOM"
          ],
          "types": [
              {
                  "id": "AXValueType",
                  "description": "Enum of possible property types.",
                  "type": "string",
                  "enum": [
                      "boolean",
                      "tristate",
// ...
```
```

--------------------------------

### Input.insertText

Source: https://chromedevtools.github.io/devtools-protocol/tot/Input

This method emulates inserting text that doesn't come from a key press, for example an emoji keyboard or an IME. This method is marked as experimental.

```APIDOC
## Input.insertText (Experimental)

### Description
This method emulates inserting text that doesn't come from a key press, for example an emoji keyboard or an IME.

### Parameters
#### Request Body
- **text** (string) - Required - The text to insert.
```

--------------------------------

### CSS.stopRuleUsageTracking

Source: https://chromedevtools.github.io/devtools-protocol/tot/CSS

Stops tracking CSS rule usage and returns a list of rules that have been used since the last call to `takeCoverageDelta` or the start of coverage instrumentation.

```APIDOC
## CSS.stopRuleUsageTracking

### Description
Stop tracking rule usage and return the list of rules that were used since last call to `takeCoverageDelta` (or since start of coverage instrumentation).

### Method
POST

### Endpoint
/CSS.stopRuleUsageTracking

### Parameters
#### Path Parameters
- None

#### Query Parameters
- None

#### Request Body
- None

### Request Example
```json
{}
```

### Response
#### Success Response (200)
- **ruleUsage** (array[RuleUsage]) - The list of rules that were used.

#### Response Example
```json
{
  "ruleUsage": [
    {
      "styleSheetId": "string",
      "startOffset": 0,
      "endOffset": 0,
      "lastLine": 0,
      "count": 0
    }
  ]
}
```
```

--------------------------------

### Preload.enable

Source: https://chromedevtools.github.io/devtools-protocol/tot/Preload

Enables preloading domain. This includes enabling prefetching, prerendering, and other features. This command is deprecated. Use Preload.enable instead.

```APIDOC
## Preload.enable

### Description
Enables preloading domain. This includes enabling prefetching, prerendering, and other features. This command is deprecated. Use Preload.enable instead.

### Method
POST

### Endpoint
/Preload.enable
```

--------------------------------

### Get Browser Version Metadata

Source: https://chromedevtools.github.io/devtools-protocol

Retrieves metadata about the browser version and the DevTools Protocol version it supports. This endpoint is useful for understanding the environment and compatibility.

```APIDOC
## GET /json/version

### Description
Browser version metadata

### Method
GET

### Endpoint
/json/version

### Response
#### Success Response (200)
- **Browser** (string) - The browser version.
- **Protocol-Version** (string) - The protocol version.
- **User-Agent** (string) - The user agent string.
- **V8-Version** (string) - The V8 JavaScript engine version.
- **WebKit-Version** (string) - The WebKit version.
- **webSocketDebuggerUrl** (string) - The WebSocket URL to connect to the browser target.

### Response Example
```json
{
    "Browser": "Chrome/72.0.3601.0",
    "Protocol-Version": "1.3",
    "User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3601.0 Safari/537.36",
    "V8-Version": "7.2.233",
    "WebKit-Version": "537.36 (@cfede9db1d154de0468cb0538479f34c0755a0f4)",
    "webSocketDebuggerUrl": "ws://localhost:9222/devtools/browser/b0b8a4fb-bb17-4359-9533-a8d9f3908bd8"
}
```
```

--------------------------------

### Overlay.ScrollSnapContainerHighlightConfig

Source: https://chromedevtools.github.io/devtools-protocol/tot/Overlay

Configuration for highlighting scroll snap containers.

```APIDOC
## Overlay.ScrollSnapContainerHighlightConfig

### Description
Configuration for highlighting scroll snap containers.

### Properties
- **snapportBorder** (LineStyle) - The style of the snapport border (default: transparent).
- **snapAreaBorder** (LineStyle) - The style of the snap area border (default: transparent).
- **scrollMarginColor** (DOM.RGBA) - The margin highlight fill color (default: transparent).
- **scrollPaddingColor** (DOM.RGBA) - The padding highlight fill color (default: transparent).
```

--------------------------------

### Emulation.getScreenInfos

Source: https://chromedevtools.github.io/devtools-protocol/tot/Emulation

Returns the device's screen configuration. In headful mode, it returns the physical screens configuration. In headless mode, it provides a virtual headless screen configuration.

```APIDOC
## Emulation.getScreenInfos

### Description
Returns device's screen configuration. In headful mode, the physical screens configuration is returned, whereas in headless mode, a virtual headless screen configuration is provided instead.

### Method
GET

### Endpoint
/Emulation.getScreenInfos

### Return Object
#### Success Response (200)
- **screenInfos** (array[ScreenInfo]) - An array of screen information objects.
```

--------------------------------

### HeapProfiler.enable

Source: https://chromedevtools.github.io/devtools-protocol/tot/HeapProfiler

Enables the HeapProfiler domain.

```APIDOC
## HeapProfiler.enable

### Description
Enables the HeapProfiler domain.

### Method
POST

### Endpoint
/json/protocol/HeapProfiler.enable
```

--------------------------------

### Overlay.getSourceOrderHighlightObjectForTest

Source: https://chromedevtools.github.io/devtools-protocol/tot/Overlay

Retrieves a highlight object for Source Order Viewer testing. This method is used to get highlight data for a specific node's source order.

```APIDOC
## Overlay.getSourceOrderHighlightObjectForTest

### Description
For Source Order Viewer testing.

### Method
POST

### Endpoint
/json/protocol/Overlay.getSourceOrderHighlightObjectForTest

### Parameters
#### Request Body
- **nodeId** (DOM.NodeId) - Required - Id of the node to highlight.

### Response
#### Success Response (200)
- **highlight** (object) - Source order highlight data for the node id provided.

### Response Example
```json
{
  "highlight": {}
}
```
```

--------------------------------

### SmartCardEmulation.connectRequested

Source: https://chromedevtools.github.io/devtools-protocol/tot/SmartCardEmulation

Fired when SCardConnect is called.

```APIDOC
## SmartCardEmulation.connectRequested

### Description
Fired when |SCardConnect| is called.

### Parameters
- **requestId** (string) - Required - 
- **contextId** (integer) - Required - 
- **reader** (string) - Required - 
- **shareMode** (ShareMode) - Required - 
- **preferredProtocols** (ProtocolSet) - Required - 
```

--------------------------------

### SmartCardEmulation.controlRequested

Source: https://chromedevtools.github.io/devtools-protocol/tot/SmartCardEmulation

Fired when SCardControl is called.

```APIDOC
## SmartCardEmulation.controlRequested

### Description
Fired when |SCardControl| is called.

### Parameters
- **requestId** (string) - Required - 
- **handle** (integer) - Required - 
- **controlCode** (integer) - Required - 
- **data** (string) - Required - 
```

--------------------------------

### Get DevTools Protocol Definition

Source: https://chromedevtools.github.io/devtools-protocol

Access the complete DevTools Protocol definition in JSON format using the `/json/protocol/` endpoint. This is useful for understanding the available domains, commands, and events.

```json
{
  "domains": [
      {
          "domain": "Accessibility",
          "experimental": true,
          "dependencies": [
              "DOM"
          ],
          "types": [
              {
                  "id": "AXValueType",
                  "description": "Enum of possible property types.",
                  "type": "string",
                  "enum": [
                      "boolean",
                      "tristate",
// ...
```

--------------------------------

### Page.AdFrameExplanation Experimental

Source: https://chromedevtools.github.io/devtools-protocol/tot/Page

Experimental ad frame explanation.

```APIDOC
## Page.AdFrameExplanation Experimental

Allowed Values: `ParentIsAd`, `CreatedByAdScript`, `MatchedBlockingRule`

Type: **string**
```