CDP Coverage Snapshot

Use the live bridge snapshot first:


foxbridge doctor

Current main snapshot:

662 upstream CDP methods in the bundled protocol snapshot
89 implemented methods
203 stubbed compatibility methods
370 missing methods
8 foxbridge-only extensions

The tables below describe the major domains foxbridge actively handles today. They are no longer a claim that foxbridge has “13 fully implemented CDP domains” across the full upstream protocol.

Major Supported Areas

Target

Method	Juggler Mapping
`setDiscoverTargets`	No-op (Juggler auto-discovers)
`setAutoAttach`	Emits pending `attachedToTarget` events
`createTarget`	`Browser.newPage`
`closeTarget`	`Page.close`
`createBrowserContext`	`Browser.createBrowserContext`
`disposeBrowserContext`	`Browser.removeBrowserContext`
`getTargets`	Session manager enumeration
`attachToTarget`	Emit page attachment pair
`activateTarget`	No-op
`getBrowserContexts`	Session manager enumeration
`getTargetInfo`	Session lookup

Page

Method	Notes
`navigate`	Maps `loaderId` from Juggler `navigationId`
`reload`	Synthetic lifecycle events emitted
`close`	Proactive `targetDestroyed` emission
`captureScreenshot`	Clip/format/quality support
`printToPDF`	Returns IO stream handle for Puppeteer v24+
`getFrameTree`	Built from session state
`createIsolatedWorld`	Tracked for re-emission on navigation
`setContent`	Via `Runtime.evaluate` with `document.open/write/close`
`getLayoutMetrics`	Via JS `document.documentElement` measurements
`addScriptToEvaluateOnNewDocument`	Pass-through
`removeScriptToEvaluateOnNewDocument`	Pass-through
`handleJavaScriptDialog`	Dialog ID tracking
`setBypassCSP`	No-op
`bringToFront`	No-op
`stopLoading`	No-op
`getNavigationHistory`	Via JS `history.length`
`setExtraHTTPHeaders`	`Browser.setExtraHTTPHeaders`
`setDownloadBehavior`	No-op
`getResourceTree`	Minimal frame tree
`setLifecycleEventsEnabled`	No-op (always enabled)

Runtime

Method	Notes
`evaluate`	`awaitPromise` via async IIFE wrapping
`callFunctionOn`	`objectId` pass-through, `$eval` combine
`getProperties`	`Runtime.getObjectProperties`
`releaseObject`	`Runtime.disposeObject`
`releaseObjectGroup`	No-op
`addBinding`	No-op
`discardConsoleEntries`	No-op
`runIfWaitingForDebugger`	No-op

DOM

Method	Notes
`getDocument`	Via `document.documentElement` evaluation
`querySelector`	Returns nodeId with backendNodeId
`querySelectorAll`	Returns array of nodeIds
`describeNode`	Full node description with attributes
`resolveNode`	Resolve backendNodeId to remote object
`getBoxModel`	Element bounding rect
`getContentQuads`	Element quad coordinates
`getOuterHTML`	Element outer HTML
`getAttributes`	Element attributes array
`scrollIntoViewIfNeeded`	`element.scrollIntoView()`
`focus`	`element.focus()`
`setFileInputFiles`	File input injection
`removeNode`	`element.remove()`
`setAttributeValue`	`element.setAttribute()`

Input

Method	Juggler Method
`dispatchMouseEvent`	`Page.dispatchMouseEvent`
`dispatchKeyEvent`	`Page.dispatchKeyEvent`
`insertText`	`Page.insertText`
`dispatchTouchEvent`	`Page.dispatchTouchEvent`

Network

Method	Juggler Method
`setCookies`	`Browser.setCookies`
`getCookies`	`Browser.getCookies`
`deleteCookies`	`Browser.clearCookies` (filtered)
`clearBrowserCookies`	`Browser.clearCookies`
`setExtraHTTPHeaders`	`Browser.setExtraHTTPHeaders`
`setRequestInterception`	`Browser.setRequestInterception`
`setUserAgentOverride`	`Browser.setUserAgentOverride`
`setCacheDisabled`	No-op
`emulateNetworkConditions`	No-op
`getResponseBody`	Pass-through

Fetch

Method	Juggler Method
`enable`	`Browser.setRequestInterception`
`disable`	`Browser.setRequestInterception(false)`
`continueRequest`	`Browser.continueInterceptedRequest`
`fulfillRequest`	`Browser.fulfillInterceptedRequest`
`failRequest`	`Browser.abortInterceptedRequest`
`getResponseBody`	`Browser.getResponseBody`
`continueWithAuth`	`Browser.handleAuthRequest`
`continueResponse`	`Browser.continueInterceptedRequest`

Emulation

Method	Notes
`setGeolocationOverride`	`Browser.setGeolocationOverride`
`setUserAgentOverride`	`Browser.setUserAgentOverride`
`setTimezoneOverride`	`Browser.setTimezoneOverride`
`setLocaleOverride`	`Browser.setLocaleOverride`
`setDeviceMetricsOverride`	`Browser.setViewportSize`
`setTouchEmulationEnabled`	`Browser.setTouchOverride`
`setEmulatedMedia`	`Page.setEmulatedMedia`
`setScrollbarsHidden`	No-op
`setDefaultBackgroundColorOverride`	No-op
`setScriptExecutionDisabled`	No-op

Other Implemented

Domain	Methods
Accessibility	`getFullAXTree`
Performance	`getMetrics` (via JS `performance.timing`)
IO	`read`, `close` (PDF streaming)
Console	`enable`, `disable`
Browser	`getVersion`, `close`, `getWindowForTarget`, `setWindowBounds`

Stub Domains (No-Op Success)

These domains return {} for all methods. Puppeteer and other clients call them but don’t require real functionality:

Domain	Purpose
Debugger	JS debugging
Profiler	CPU profiling
HeapProfiler	Heap snapshots
Memory	Memory info
ServiceWorker	SW management
CacheStorage	Cache API
IndexedDB	IDB inspection
Log	Log entries
Security	Certificate info
CSS	Stylesheet inspection
Overlay	Highlight overlays
DOMStorage	localStorage inspection
WebAuthn	WebAuthn testing
Media	Media playback
Audits	Best practices
Inspector	DevTools internal
Database	Web SQL
BackgroundService	Background fetch/sync
Cast	Cast devices
DeviceAccess	Device permissions

Any .enable or .disable call on an unrecognized domain also returns success.