Parity matrix — browserlane

The complete capability matrix for WebDriver BiDi — every module, command, and event mapped against the bl engine, its user intention, CLI/MCP exposure, Skill workflow, and Chrome support.

Every WebDriver BiDi capability, tracked against the bl engine in public. Expand a row (+) for the implementation description, source evidence, arguments, risk, and verification detail.

Spec capabilities

65 commands · 24 events

Engine coverage

64%

57 covered · 32 gaps

How it's covered

38 native

19 shimmed / consumed / lifecycle

Verification baseline

57 integrated

awaiting runtime verification — 0 verified so far · 32 not integrated

tracking W3C WD 2026-06-29 · last verified 2026-07-09

Read the matrix as two separate questions

Engine answers "can the bl engine reach this capability?" — that is the parity score. CLI / MCP / Skill answer "does a curated surface exist for it?" — a deliberate product decision, not a mirror of the spec. Internal in a surface column is not a gap; Missing in the engine column is. Skill entries record documented CLI workflows — the Skill teaches the CLI and implements no browser capability of its own. Chrome columns are evidence-gated and tracked independently from Browserlane's implementation.

Search capability, user intent, or ID

Module

Kind

Engine parity

Engine implementation

Test status

Exposure decision

CLI exposure

MCP exposure

Skill workflow

BL on Chrome

Showing 89 of 89 capabilities · engine parity is tracked separately from CLI/MCP exposure

Details	ID	Capability	Kind	User intent	Engine	CLI	MCP	Skill	On Chrome	Verification
	BIDI-001	session.status	command	Inspect protocol health and readiness	Native	Not exposed	Proposed	N/A	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/bidi/mux.rs:624` Arguments / defaults No user arguments; query the live session. Exposure decision Advanced public CLI bl bidi status · Not exposed · Advanced MCP browser_bidi_capabilities · Proposed · Raw · profile: protocol Skill workflow Not applicable — no user-facing CLI workflow Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.1.3.1 · W3C WD 2026-06-29 Risk read Priority P1 Last verified 2026-07-09
	BIDI-002	session.new	command	Start a browser automation session	Native	`bl start`	`browser_start`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/browser/launcher.rs:130` Arguments / defaults Capabilities come from flags/config; session id and WebSocket setup are engine-managed. Exposure decision Semantic public CLI bl start · Shipped · Public MCP browser_start · Shipped · Public · profile: core Skill workflow Documented · bl start (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.1.3.2 · W3C WD 2026-06-29 Risk write Priority P0 Last verified 2026-07-09
	BIDI-003	session.end	command	Stop the current automation session	Native	`bl stop`	`browser_stop`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/router.rs:1446` Arguments / defaults Current named session is derived; protocol cleanup is engine-managed. Exposure decision Semantic public CLI bl stop · Shipped · Public MCP browser_stop · Shipped · Public · profile: core Skill workflow Documented · bl stop (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.1.3.3 · W3C WD 2026-06-29 Risk write Priority P0 Last verified 2026-07-09
	BIDI-004	session.subscribe	command	Subscribe the engine to browser events	Native	Proposed	Proposed	Planned	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/router.rs:270` Arguments / defaults Event names may be caller-filtered; subscription ids and refcounts remain internal. Exposure decision Internal CLI bl events tail · Proposed · Advanced MCP browser_events_read · Proposed · Advanced · profile: debugging Skill workflow Planned · bl events tail (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.1.3.4 · W3C WD 2026-06-29 Risk read Priority P0 Last verified 2026-07-09
	BIDI-005	session.unsubscribe	command	Release browser event subscriptions	Native	Proposed	Proposed	Planned	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/bidi/session.rs:158` Arguments / defaults Engine-owned cleanup; never require users to pass subscription ids in normal flows. Exposure decision Internal CLI bl events tail · Proposed · Advanced MCP browser_events_read · Proposed · Advanced · profile: debugging Skill workflow Planned · bl events tail (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.1.3.5 · W3C WD 2026-06-29 Risk read Priority P0 Last verified 2026-07-09
	BIDI-006	browser.close	command	Terminate the owned browser process	Lifecycle alternative	`bl daemon stop`	Proposed (raw)	N/A	Integrated · test pending	Test pending
Implementation Browser lifecycle is available through daemon/process teardown, but browser.close is not sent as a native BiDi command. Source evidence `src/daemon; src/api` Arguments / defaults No default MCP exposure; require explicit administrative intent. Exposure decision Admin CLI bl daemon stop · Shipped · Admin MCP browser_bidi_call · Proposed (raw) · Raw · profile: protocol Skill workflow Not applicable — no user-facing CLI workflow Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.2.4.1 · W3C WD 2026-06-29 Risk dangerous Priority P1 Last verified 2026-07-09
	BIDI-007	browser.createUserContext	command	Create an isolated named browser session	Native	`bl session new <name>`	`browser_session_create`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_lifecycle.rs:87` Arguments / defaults Name/options are caller-supplied; userContext id is internal. Exposure decision Semantic public CLI bl session new <name> · Shipped · Public MCP browser_session_create · Shipped · Public · profile: core Skill workflow Documented · bl session new <name> (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.2.4.2 · W3C WD 2026-06-29 Risk write Priority P0 Last verified 2026-07-09
	BIDI-008	browser.getClientWindows	command	Inspect browser window state	Native	`bl window`	`browser_get_window`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_emulation.rs:393` Arguments / defaults Active clientWindow id is derived. Exposure decision Semantic public CLI bl window · Shipped · Public MCP browser_get_window · Shipped · Public · profile: testing Skill workflow Documented · bl window (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.2.4.3 · W3C WD 2026-06-29 Risk read Priority P1 Last verified 2026-07-09
	BIDI-009	browser.getUserContexts	command	List isolated browser sessions	Native	`bl session list`	`browser_session_list`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/daemon/orchestrator.rs:217` Arguments / defaults Map userContext ids to stable Browserlane session names. Exposure decision Semantic public CLI bl session list · Shipped · Public MCP browser_session_list · Shipped · Public · profile: core Skill workflow Documented · bl session list (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.2.4.4 · W3C WD 2026-06-29 Risk read Priority P0 Last verified 2026-07-09
	BIDI-010	browser.removeUserContext	command	Close an isolated named browser session	Native	`bl session close <name>`	`browser_session_close`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_lifecycle.rs:187` Arguments / defaults Caller supplies Browserlane name; userContext id and teardown ordering are internal. Exposure decision Semantic public CLI bl session close <name> · Shipped · Public MCP browser_session_close · Shipped · Public · profile: core Skill workflow Documented · bl session close <name> (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.2.4.5 · W3C WD 2026-06-29 Risk write Priority P0 Last verified 2026-07-09
	BIDI-011	browser.setClientWindowState	command	Resize, move or change browser window state	Native	`bl window <width> <height>`	`browser_set_window`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_emulation.rs:451` Arguments / defaults Dimensions/state are caller-supplied; clientWindow id is derived. Exposure decision Semantic public CLI bl window <width> <height> · Shipped · Public MCP browser_set_window · Shipped · Public · profile: testing Skill workflow Documented · bl window <width> <height> (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.2.4.6 · W3C WD 2026-06-29 Risk write Priority P1 Last verified 2026-07-09
	BIDI-012	browser.setDownloadBehavior	command	Choose download behavior and destination	Native	`bl download dir <path>`	`browser_download_set_dir`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_download.rs:2` Arguments / defaults Destination is caller-supplied; userContext and download lifecycle are internal. Exposure decision Semantic public CLI bl download dir <path> · Shipped · Advanced MCP browser_download_set_dir · Shipped · Advanced · profile: testing Skill workflow Documented · bl download dir <path> (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.2.4.7 · W3C WD 2026-06-29 Risk dangerous Priority P1 Last verified 2026-07-09
	BIDI-013	browsingContext.activate	command	Switch to a page	Native	`bl page switch <page>`	`browser_switch_page`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_lifecycle.rs:211` Arguments / defaults Caller chooses a page ref/index; context id is resolved internally. Exposure decision Semantic public CLI bl page switch <page> · Shipped · Public MCP browser_switch_page · Shipped · Public · profile: core Skill workflow Documented · bl page switch <page> (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.3.1 · W3C WD 2026-06-29 Risk write Priority P0 Last verified 2026-07-09
	BIDI-014	browsingContext.captureScreenshot	command	Capture page or element evidence	Native	`bl screenshot`	`browser_screenshot`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_capture.rs:248` Arguments / defaults Active context is derived; viewport is default and full-page is explicit. Exposure decision Semantic public CLI bl screenshot · Shipped · Public MCP browser_screenshot · Shipped · Public · profile: core Skill workflow Documented · bl screenshot (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.3.2 · W3C WD 2026-06-29 Risk read Priority P0 Last verified 2026-07-09
	BIDI-015	browsingContext.close	command	Close a page	Native	`bl page close`	`browser_close_page`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_lifecycle.rs:226` Arguments / defaults Active/selected page is derived; prompt behavior follows policy. Exposure decision Semantic public CLI bl page close · Shipped · Public MCP browser_close_page · Shipped · Public · profile: core Skill workflow Documented · bl page close (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.3.3 · W3C WD 2026-06-29 Risk write Priority P0 Last verified 2026-07-09
	BIDI-016	browsingContext.create	command	Open a new tab or window	Native	`bl page new [url]`	`browser_new_page`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_lifecycle.rs:68` Arguments / defaults Session/userContext is derived; type and URL are caller choices. Exposure decision Semantic public CLI bl page new [url] · Shipped · Public MCP browser_new_page · Shipped · Public · profile: core Skill workflow Documented · bl page new [url] (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.3.4 · W3C WD 2026-06-29 Risk write Priority P0 Last verified 2026-07-09
	BIDI-017	browsingContext.getTree	command	List pages and frames	Native	`bl pages --tree`	`browser_context_tree`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_storage.rs:433` Arguments / defaults Root context and depth may be caller-filtered. Exposure decision Semantic public CLI bl pages --tree · Shipped · Public MCP browser_context_tree · Shipped · Public · profile: core Skill workflow Documented · bl pages --tree (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.3.5 · W3C WD 2026-06-29 Risk read Priority P0 Last verified 2026-07-09
	BIDI-018	browsingContext.handleUserPrompt	command	Accept or dismiss a browser dialog	Native	`bl dialog accept\|dismiss`	`browser_dialog_accept / browser_dialog_dismiss`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_dialog.rs:39` Arguments / defaults Accept/dismiss and prompt text require explicit intent; context is derived. Exposure decision Semantic public CLI bl dialog accept\|dismiss · Shipped · Public MCP browser_dialog_accept / browser_dialog_dismiss · Shipped · Public · profile: core Skill workflow Documented · bl dialog accept\|dismiss (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.3.6 · W3C WD 2026-06-29 Risk dangerous Priority P0 Last verified 2026-07-09
	BIDI-019	browsingContext.locateNodes	command	Resolve semantic locators and durable element refs	Shimmed	`bl snapshot / bl find`(partial)	`browser_snapshot / browser_find`(partial)	Documented	Integrated · test pending	Test pending
Implementation Semantic locate/find/map is implemented with injected script; native locateNodes is not yet used. Source evidence `src/api; src/agent` Arguments / defaults Locator is caller-supplied; context, shared handles, ownership and stale-ref recovery are internal. Exposure decision Internal CLI bl snapshot / bl find · Shipped (partial) · Public MCP browser_snapshot / browser_find · Shipped (partial) · Public · profile: core Skill workflow Documented · bl snapshot / bl find (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.3.7 · W3C WD 2026-06-29 Risk read Priority P0 Last verified 2026-07-09
	BIDI-020	browsingContext.navigate	command	Navigate the active page	Native	`bl open <url>`	`browser_open`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_navigation.rs:215` Arguments / defaults URL is required; active context is derived; wait defaults to complete and remains configurable. Exposure decision Semantic public CLI bl open <url> · Shipped · Public MCP browser_open · Shipped · Public · profile: core Skill workflow Documented · bl open <url> (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.3.8 · W3C WD 2026-06-29 Risk write Priority P0 Last verified 2026-07-09
	BIDI-021	browsingContext.print	command	Export the page as PDF	Native	`bl pdf`	`browser_pdf`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_capture.rs:19` Arguments / defaults Print settings/output path are caller-supplied; context is derived. Exposure decision Semantic public CLI bl pdf · Shipped · Advanced MCP browser_pdf · Shipped · Advanced · profile: testing Skill workflow Documented · bl pdf (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.3.9 · W3C WD 2026-06-29 Risk read Priority P1 Last verified 2026-07-09
	BIDI-022	browsingContext.reload	command	Reload the active page	Native	`bl reload`	`browser_reload`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_navigation.rs:336` Arguments / defaults Active context is derived; cache and wait behavior are configurable. Exposure decision Semantic public CLI bl reload · Shipped · Public MCP browser_reload · Shipped · Public · profile: core Skill workflow Documented · bl reload (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.3.10 · W3C WD 2026-06-29 Risk write Priority P0 Last verified 2026-07-09
	BIDI-023	browsingContext.setBypassCSP	command	Temporarily bypass Content Security Policy for debugging	Missing	Not exposed	Proposed (raw)	N/A	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Never enable by default; context and desired enabled state must be explicit. Exposure decision Raw only CLI bl bidi call browsingContext.setBypassCSP · Not exposed · Raw MCP browser_bidi_call · Proposed (raw) · Raw · profile: protocol Skill workflow Not applicable — no user-facing CLI workflow Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.3.11 · W3C WD 2026-06-29 Risk dangerous Priority P2 Last verified 2026-07-09
	BIDI-024	browsingContext.setViewport	command	Set viewport and device pixel ratio	Native	`bl viewport <width> <height>`	`browser_set_viewport`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/agent/schema.rs:1531` Arguments / defaults Dimensions/DPR are caller-supplied; active context is derived. Exposure decision Semantic public CLI bl viewport <width> <height> · Shipped · Public MCP browser_set_viewport · Shipped · Public · profile: testing Skill workflow Documented · bl viewport <width> <height> (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.3.12 · W3C WD 2026-06-29 Risk write Priority P1 Last verified 2026-07-09
	BIDI-025	browsingContext.startScreencast	command	Start video recording	Native	`bl screencast start`	`browser_screencast_start`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_screencast.rs:1` Arguments / defaults Format and limits are configurable; active context is derived. Exposure decision Semantic public CLI bl screencast start · Shipped · Advanced MCP browser_screencast_start · Shipped · Advanced · profile: testing Skill workflow Documented · bl screencast start (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.3.13 · W3C WD 2026-06-29 Risk read Priority P1 Last verified 2026-07-09
	BIDI-026	browsingContext.stopScreencast	command	Stop video recording	Native	`bl screencast stop`	`browser_screencast_stop`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_screencast.rs:2` Arguments / defaults Active recording id/path are engine-managed. Exposure decision Semantic public CLI bl screencast stop · Shipped · Advanced MCP browser_screencast_stop · Shipped · Advanced · profile: testing Skill workflow Documented · bl screencast stop (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.3.14 · W3C WD 2026-06-29 Risk read Priority P1 Last verified 2026-07-09
	BIDI-027	browsingContext.traverseHistory	command	Navigate backward or forward	Native	`bl back / bl forward`	`browser_back / browser_forward`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_navigation.rs:273` Arguments / defaults Delta is derived from the semantic command; context is internal. Exposure decision Semantic public CLI bl back / bl forward · Shipped · Public MCP browser_back / browser_forward · Shipped · Public · profile: core Skill workflow Documented · bl back / bl forward (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.3.15 · W3C WD 2026-06-29 Risk write Priority P0 Last verified 2026-07-09
	BIDI-028	browsingContext.contextCreated	event	Keep the page/session registry synchronized	Consumed event	Internal	Internal	N/A	Integrated · test pending	Test pending
Implementation Event is subscribed/routed by the Browserlane session, process or trace pipeline. Source evidence `src/api/router.rs:258` Arguments / defaults Always-on critical event; users consume the derived page list. Exposure decision Internal CLI bl pages · Internal · Public MCP browser_pages · Internal · Public · profile: core Skill workflow Not applicable — no user-facing CLI workflow Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.4.1 · W3C WD 2026-06-29 Risk read Priority P0 Last verified 2026-07-09
	BIDI-029	browsingContext.contextDestroyed	event	Remove closed pages and recover active-page state	Consumed event	Internal	Internal	N/A	Integrated · test pending	Test pending
Implementation Event is subscribed/routed by the Browserlane session, process or trace pipeline. Source evidence `src/daemon/process_pool.rs:85` Arguments / defaults Always-on critical event; context ids are internal. Exposure decision Internal CLI bl pages · Internal · Public MCP browser_pages · Internal · Public · profile: core Skill workflow Not applicable — no user-facing CLI workflow Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.4.2 · W3C WD 2026-06-29 Risk read Priority P0 Last verified 2026-07-09
	BIDI-030	browsingContext.navigationStarted	event	Observe Navigation Started	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Event filter and session are caller-supplied; subscription id, cursor and buffering are engine-managed. Exposure decision Advanced public CLI bl events tail --include browsingContext.navigationStarted · Proposed · Advanced MCP browser_events_read · Proposed · Advanced · profile: debugging Skill workflow Planned · bl events tail --include browsingContext.navigationStarted (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.4.3 · W3C WD 2026-06-29 Risk read Priority P1 Last verified 2026-07-09
	BIDI-031	browsingContext.fragmentNavigated	event	Observe Fragment Navigated	Consumed event	Proposed	Proposed	Planned	Integrated · test pending	Test pending
Implementation Event is subscribed/routed by the Browserlane session, process or trace pipeline. Source evidence `src/api/router.rs:266` Arguments / defaults Event filter and session are caller-supplied; subscription id, cursor and buffering are engine-managed. Exposure decision Advanced public CLI bl events tail --include browsingContext.fragmentNavigated · Proposed · Advanced MCP browser_events_read · Proposed · Advanced · profile: debugging Skill workflow Planned · bl events tail --include browsingContext.fragmentNavigated (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.4.4 · W3C WD 2026-06-29 Risk read Priority P1 Last verified 2026-07-09
	BIDI-032	browsingContext.historyUpdated	event	Observe History Updated	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Event filter and session are caller-supplied; subscription id, cursor and buffering are engine-managed. Exposure decision Advanced public CLI bl events tail --include browsingContext.historyUpdated · Proposed · Advanced MCP browser_events_read · Proposed · Advanced · profile: debugging Skill workflow Planned · bl events tail --include browsingContext.historyUpdated (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.4.5 · W3C WD 2026-06-29 Risk read Priority P1 Last verified 2026-07-09
	BIDI-033	browsingContext.domContentLoaded	event	Observe Dom Content Loaded	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Event filter and session are caller-supplied; subscription id, cursor and buffering are engine-managed. Exposure decision Advanced public CLI bl events tail --include browsingContext.domContentLoaded · Proposed · Advanced MCP browser_events_read · Proposed · Advanced · profile: debugging Skill workflow Planned · bl events tail --include browsingContext.domContentLoaded (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.4.6 · W3C WD 2026-06-29 Risk read Priority P1 Last verified 2026-07-09
	BIDI-034	browsingContext.load	event	Observe Load	Consumed event	Proposed	Proposed	Planned	Integrated · test pending	Test pending
Implementation Event is subscribed/routed by the Browserlane session, process or trace pipeline. Source evidence `src/api/router.rs:265` Arguments / defaults Event filter and session are caller-supplied; subscription id, cursor and buffering are engine-managed. Exposure decision Advanced public CLI bl events tail --include browsingContext.load · Proposed · Advanced MCP browser_events_read · Proposed · Advanced · profile: debugging Skill workflow Planned · bl events tail --include browsingContext.load (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.4.7 · W3C WD 2026-06-29 Risk read Priority P1 Last verified 2026-07-09
	BIDI-035	browsingContext.downloadWillBegin	event	Wait for and identify a download	Consumed event	`bl download wait`(partial)	Proposed	Documented	Integrated · test pending	Test pending
Implementation Event is subscribed/routed by the Browserlane session, process or trace pipeline. Source evidence `src/api/router.rs:263` Arguments / defaults Always-on critical event; correlate download id and suggested filename internally. Exposure decision Semantic public CLI bl download wait · Shipped (partial) · Advanced MCP browser_event_wait · Proposed · Advanced · profile: testing Skill workflow Documented · bl download wait (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.4.8 · W3C WD 2026-06-29 Risk read Priority P0 Last verified 2026-07-09
	BIDI-036	browsingContext.downloadEnd	event	Wait for download completion	Consumed event	`bl download wait`(partial)	Proposed	Documented	Integrated · test pending	Test pending
Implementation Event is subscribed/routed by the Browserlane session, process or trace pipeline. Source evidence `src/api/router.rs:264` Arguments / defaults Always-on critical event; expose success/failure without raw ids. Exposure decision Semantic public CLI bl download wait · Shipped (partial) · Advanced MCP browser_event_wait · Proposed · Advanced · profile: testing Skill workflow Documented · bl download wait (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.4.9 · W3C WD 2026-06-29 Risk read Priority P0 Last verified 2026-07-09
	BIDI-037	browsingContext.navigationAborted	event	Observe Navigation Aborted	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Event filter and session are caller-supplied; subscription id, cursor and buffering are engine-managed. Exposure decision Advanced public CLI bl events tail --include browsingContext.navigationAborted · Proposed · Advanced MCP browser_events_read · Proposed · Advanced · profile: debugging Skill workflow Planned · bl events tail --include browsingContext.navigationAborted (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.4.10 · W3C WD 2026-06-29 Risk read Priority P1 Last verified 2026-07-09
	BIDI-038	browsingContext.navigationCommitted	event	Observe Navigation Committed	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Event filter and session are caller-supplied; subscription id, cursor and buffering are engine-managed. Exposure decision Advanced public CLI bl events tail --include browsingContext.navigationCommitted · Proposed · Advanced MCP browser_events_read · Proposed · Advanced · profile: debugging Skill workflow Planned · bl events tail --include browsingContext.navigationCommitted (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.4.11 · W3C WD 2026-06-29 Risk read Priority P1 Last verified 2026-07-09
	BIDI-039	browsingContext.navigationFailed	event	Observe Navigation Failed	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Event filter and session are caller-supplied; subscription id, cursor and buffering are engine-managed. Exposure decision Advanced public CLI bl events tail --include browsingContext.navigationFailed · Proposed · Advanced MCP browser_events_read · Proposed · Advanced · profile: debugging Skill workflow Planned · bl events tail --include browsingContext.navigationFailed (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.4.12 · W3C WD 2026-06-29 Risk read Priority P1 Last verified 2026-07-09
	BIDI-040	browsingContext.userPromptClosed	event	Track prompt completion and unblock waits	Consumed event	Internal	Proposed	N/A	Integrated · test pending	Test pending
Implementation Event is subscribed/routed by the Browserlane session, process or trace pipeline. Source evidence `src/daemon/process_pool.rs:87` Arguments / defaults Always-on critical event; prompt state is internal. Exposure decision Internal CLI bl dialog wait · Internal · Public MCP browser_event_wait · Proposed · Advanced · profile: testing Skill workflow Not applicable — no user-facing CLI workflow Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.4.13 · W3C WD 2026-06-29 Risk read Priority P0 Last verified 2026-07-09
	BIDI-041	browsingContext.userPromptOpened	event	Detect and inspect a browser dialog	Consumed event	`bl dialog wait\|info`	`browser_dialog_wait / browser_dialog_info`	Documented	Integrated · test pending	Test pending
Implementation Event is subscribed/routed by the Browserlane session, process or trace pipeline. Source evidence `src/api/handlers_dialog.rs:3` Arguments / defaults Always-on critical event; never auto-confirm sensitive prompts invisibly. Exposure decision Semantic public CLI bl dialog wait\|info · Shipped · Public MCP browser_dialog_wait / browser_dialog_info · Shipped · Public · profile: core Skill workflow Documented · bl dialog wait\|info (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.3.4.14 · W3C WD 2026-06-29 Risk read Priority P0 Last verified 2026-07-09
	BIDI-042	emulation.setForcedColorsModeThemeOverride	command	Test forced-colors rendering	Shimmed	`bl media --forced-colors <mode>`(shim)	`browser_emulate_media`(shim)	Documented	Integrated · test pending	Test pending
Implementation User intent is available through the media JS shim; native emulation command is not yet used. Source evidence `src/api; src/agent` Arguments / defaults Mode is caller-supplied; active context is derived; use native BiDi when available. Exposure decision Semantic public CLI bl media --forced-colors <mode> · Shipped (shim) · Advanced MCP browser_emulate_media · Shipped (shim) · Advanced · profile: testing Skill workflow Documented · bl media --forced-colors <mode> (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.4.2.1 · W3C WD 2026-06-29 Risk write Priority P1 Last verified 2026-07-09
	BIDI-043	emulation.setGeolocationOverride	command	Test a geographic location	Shimmed	`bl geolocation <lat> <lng>`(shim)	`browser_set_geolocation`(shim)	Documented	Integrated · test pending	Test pending
Implementation User intent is implemented through a navigator.geolocation JS shim; native emulation command is not yet used. Source evidence `src/api; src/agent` Arguments / defaults Coordinates are caller-supplied; context is derived; replace JS shim with native BiDi. Exposure decision Semantic public CLI bl geolocation <lat> <lng> · Shipped (shim) · Advanced MCP browser_set_geolocation · Shipped (shim) · Advanced · profile: testing Skill workflow Documented · bl geolocation <lat> <lng> (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.4.2.2 · W3C WD 2026-06-29 Risk write Priority P1 Last verified 2026-07-09
	BIDI-044	emulation.setLocaleOverride	command	Set Locale Override	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Emulation values are caller-supplied; active session/context is derived; reset semantics must be explicit. Exposure decision Advanced public CLI bl emulate locale · Proposed · Advanced MCP browser_emulate · Proposed · Advanced · profile: testing Skill workflow Planned · bl emulate locale (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.4.2.3 · W3C WD 2026-06-29 Risk write Priority P1 Last verified 2026-07-09
	BIDI-045	emulation.setNetworkConditions	command	Set Network Conditions	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Emulation values are caller-supplied; active session/context is derived; reset semantics must be explicit. Exposure decision Advanced public CLI bl emulate network-conditions · Proposed · Advanced MCP browser_emulate · Proposed · Advanced · profile: testing Skill workflow Planned · bl emulate network-conditions (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.4.2.4 · W3C WD 2026-06-29 Risk write Priority P1 Last verified 2026-07-09
	BIDI-046	emulation.setScreenSettingsOverride	command	Test screen dimensions and DPR	Lifecycle alternative	`bl viewport`(partial)	`browser_set_viewport`(partial)	Documented	Integrated · test pending	Test pending
Implementation Viewport/DPR user intent is partially available via browsingContext.setViewport; full screen settings are not implemented. Source evidence `src/daemon; src/api` Arguments / defaults Do not equate viewport with full screen settings; expose screen-specific fields when implemented. Exposure decision Semantic public CLI bl viewport · Shipped (partial) · Advanced MCP browser_set_viewport · Shipped (partial) · Advanced · profile: testing Skill workflow Documented · bl viewport (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.4.2.5 · W3C WD 2026-06-29 Risk write Priority P1 Last verified 2026-07-09
	BIDI-047	emulation.setScreenOrientationOverride	command	Set Screen Orientation Override	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Emulation values are caller-supplied; active session/context is derived; reset semantics must be explicit. Exposure decision Advanced public CLI bl emulate screen-orientation · Proposed · Advanced MCP browser_emulate · Proposed · Advanced · profile: testing Skill workflow Planned · bl emulate screen-orientation (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.4.2.6 · W3C WD 2026-06-29 Risk write Priority P1 Last verified 2026-07-09
	BIDI-048	emulation.setUserAgentOverride	command	Set User Agent Override	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Emulation values are caller-supplied; active session/context is derived; reset semantics must be explicit. Exposure decision Advanced public CLI bl emulate user-agent · Proposed · Advanced MCP browser_emulate · Proposed · Advanced · profile: testing Skill workflow Planned · bl emulate user-agent (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.4.2.7 · W3C WD 2026-06-29 Risk write Priority P1 Last verified 2026-07-09
	BIDI-049	emulation.setScriptingEnabled	command	Set Scripting Enabled	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Emulation values are caller-supplied; active session/context is derived; reset semantics must be explicit. Exposure decision Advanced public CLI bl emulate scripting-enabled · Proposed · Advanced MCP browser_emulate · Proposed · Advanced · profile: testing Skill workflow Planned · bl emulate scripting-enabled (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.4.2.8 · W3C WD 2026-06-29 Risk write Priority P1 Last verified 2026-07-09
	BIDI-050	emulation.setScrollbarTypeOverride	command	Set Scrollbar Type Override	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Emulation values are caller-supplied; active session/context is derived; reset semantics must be explicit. Exposure decision Advanced public CLI bl emulate scrollbar-type · Proposed · Advanced MCP browser_emulate · Proposed · Advanced · profile: testing Skill workflow Planned · bl emulate scrollbar-type (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.4.2.9 · W3C WD 2026-06-29 Risk write Priority P1 Last verified 2026-07-09
	BIDI-051	emulation.setTimezoneOverride	command	Test time-zone-sensitive behavior	Native	Not exposed	`page_clock_set_timezone`	N/A	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_clock.rs:81` Arguments / defaults Time zone is caller-supplied; reset must be explicit; target is derived. Exposure decision Semantic public CLI bl emulate timezone <zone> · Not exposed · Advanced MCP page_clock_set_timezone · Shipped · Advanced · profile: testing Skill workflow Not applicable — no user-facing CLI workflow Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.4.2.10 · W3C WD 2026-06-29 Risk write Priority P1 Last verified 2026-07-09
	BIDI-052	emulation.setTouchOverride	command	Set Touch Override	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Emulation values are caller-supplied; active session/context is derived; reset semantics must be explicit. Exposure decision Advanced public CLI bl emulate touch · Proposed · Advanced MCP browser_emulate · Proposed · Advanced · profile: testing Skill workflow Planned · bl emulate touch (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.4.2.11 · W3C WD 2026-06-29 Risk write Priority P1 Last verified 2026-07-09
	BIDI-053	network.addDataCollector	command	Capture request or response bodies for forensic evidence	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Capture must be explicit, bounded and redacted; collector ids are internal. Exposure decision Internal CLI bl trace --network-bodies · Proposed · Advanced MCP browser_trace · Proposed · Advanced · profile: debugging Skill workflow Planned · bl trace --network-bodies (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.5.5.1 · W3C WD 2026-06-29 Risk dangerous Priority P1 Last verified 2026-07-09
	BIDI-054	network.addIntercept	command	Add a network route or mock	Native	Internal	Not exposed	N/A	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_network.rs:37` Arguments / defaults URL patterns/phases are caller-supplied; intercept id is internal. Exposure decision Advanced public CLI bl network route add · Internal · Advanced MCP browser_network · Not exposed · Advanced · profile: debugging Skill workflow Not applicable — no user-facing CLI workflow Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.5.5.2 · W3C WD 2026-06-29 Risk write Priority P1 Last verified 2026-07-09
	BIDI-055	network.continueRequest	command	Continue or modify an intercepted request	Native	Internal	Not exposed	N/A	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_network.rs:121` Arguments / defaults Request mutations are caller-supplied; request/intercept ids come from the event bus. Exposure decision Advanced public CLI bl network request continue · Internal · Advanced MCP browser_network · Not exposed · Advanced · profile: debugging Skill workflow Not applicable — no user-facing CLI workflow Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.5.5.3 · W3C WD 2026-06-29 Risk dangerous Priority P1 Last verified 2026-07-09
	BIDI-056	network.continueResponse	command	Continue Response	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Patterns, headers, credentials and bodies are caller-supplied; intercept, collector and request ids are engine-managed. Exposure decision Advanced public CLI bl network continue-response · Proposed · Advanced MCP browser_network · Proposed · Advanced · profile: debugging Skill workflow Planned · bl network continue-response (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.5.5.4 · W3C WD 2026-06-29 Risk write Priority P1 Last verified 2026-07-09
	BIDI-057	network.continueWithAuth	command	Continue With Auth	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Patterns, headers, credentials and bodies are caller-supplied; intercept, collector and request ids are engine-managed. Exposure decision Advanced public CLI bl network continue-with-auth · Proposed · Advanced MCP browser_network · Proposed · Advanced · profile: debugging Skill workflow Planned · bl network continue-with-auth (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.5.5.5 · W3C WD 2026-06-29 Risk write Priority P1 Last verified 2026-07-09
	BIDI-058	network.disownData	command	Disown Data	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Patterns, headers, credentials and bodies are caller-supplied; intercept, collector and request ids are engine-managed. Exposure decision Advanced public CLI bl network disown-data · Proposed · Advanced MCP browser_network · Proposed · Advanced · profile: debugging Skill workflow Planned · bl network disown-data (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.5.5.6 · W3C WD 2026-06-29 Risk write Priority P1 Last verified 2026-07-09
	BIDI-059	network.failRequest	command	Abort a matching network request	Native	Internal	Not exposed	N/A	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_network.rs:218` Arguments / defaults Pattern and failure policy are explicit; request ids remain internal in static routes. Exposure decision Advanced public CLI bl network route abort · Internal · Advanced MCP browser_network · Not exposed · Advanced · profile: debugging Skill workflow Not applicable — no user-facing CLI workflow Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.5.5.7 · W3C WD 2026-06-29 Risk dangerous Priority P1 Last verified 2026-07-09
	BIDI-060	network.getData	command	Get Data	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Patterns, headers, credentials and bodies are caller-supplied; intercept, collector and request ids are engine-managed. Exposure decision Advanced public CLI bl network get-data · Proposed · Advanced MCP browser_network · Proposed · Advanced · profile: debugging Skill workflow Planned · bl network get-data (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.5.5.8 · W3C WD 2026-06-29 Risk write Priority P1 Last verified 2026-07-09
	BIDI-061	network.provideResponse	command	Fulfill a request with a mocked response	Native	Internal	Not exposed	N/A	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_network.rs:188` Arguments / defaults Status, headers and body are caller-supplied; body size is bounded. Exposure decision Advanced public CLI bl network route fulfill · Internal · Advanced MCP browser_network · Not exposed · Advanced · profile: debugging Skill workflow Not applicable — no user-facing CLI workflow Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.5.5.9 · W3C WD 2026-06-29 Risk dangerous Priority P1 Last verified 2026-07-09
	BIDI-062	network.removeDataCollector	command	Remove Data Collector	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Patterns, headers, credentials and bodies are caller-supplied; intercept, collector and request ids are engine-managed. Exposure decision Advanced public CLI bl network remove-data-collector · Proposed · Advanced MCP browser_network · Proposed · Advanced · profile: debugging Skill workflow Planned · bl network remove-data-collector (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.5.5.10 · W3C WD 2026-06-29 Risk write Priority P1 Last verified 2026-07-09
	BIDI-063	network.removeIntercept	command	Remove a network route or mock	Native	Internal	Not exposed	N/A	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_network.rs:73` Arguments / defaults Caller selects Browserlane route name; intercept id is internal. Exposure decision Advanced public CLI bl network route remove · Internal · Advanced MCP browser_network · Not exposed · Advanced · profile: debugging Skill workflow Not applicable — no user-facing CLI workflow Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.5.5.11 · W3C WD 2026-06-29 Risk write Priority P1 Last verified 2026-07-09
	BIDI-064	network.setCacheBehavior	command	Set Cache Behavior	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Patterns, headers, credentials and bodies are caller-supplied; intercept, collector and request ids are engine-managed. Exposure decision Advanced public CLI bl network set-cache-behavior · Proposed · Advanced MCP browser_network · Proposed · Advanced · profile: debugging Skill workflow Planned · bl network set-cache-behavior (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.5.5.12 · W3C WD 2026-06-29 Risk write Priority P1 Last verified 2026-07-09
	BIDI-065	network.setExtraHeaders	command	Set request headers safely	Shimmed	Internal	Not exposed	N/A	Integrated · test pending	Test pending
Implementation Header behavior is implemented through Browserlane request interception; native setExtraHeaders is not yet used. Source evidence `src/api; src/agent` Arguments / defaults Headers/origin scope are caller-supplied; sensitive values must be redacted. Exposure decision Semantic public CLI bl network headers set · Internal · Advanced MCP browser_network · Not exposed · Advanced · profile: debugging Skill workflow Not applicable — no user-facing CLI workflow Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.5.5.13 · W3C WD 2026-06-29 Risk dangerous Priority P1 Last verified 2026-07-09
	BIDI-066	network.authRequired	event	Observe Auth Required	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Event filter and session are caller-supplied; subscription id, cursor and buffering are engine-managed. Exposure decision Advanced public CLI bl events tail --include network.authRequired · Proposed · Advanced MCP browser_events_read · Proposed · Advanced · profile: debugging Skill workflow Planned · bl events tail --include network.authRequired (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.5.6.1 · W3C WD 2026-06-29 Risk read Priority P1 Last verified 2026-07-09
	BIDI-067	network.beforeRequestSent	event	Observe Before Request Sent	Consumed event	Proposed	Proposed	Planned	Integrated · test pending	Test pending
Implementation Event is subscribed/routed by the Browserlane session, process or trace pipeline. Source evidence `src/api/router.rs:259` Arguments / defaults Event filter and session are caller-supplied; subscription id, cursor and buffering are engine-managed. Exposure decision Advanced public CLI bl events tail --include network.beforeRequestSent · Proposed · Advanced MCP browser_events_read · Proposed · Advanced · profile: debugging Skill workflow Planned · bl events tail --include network.beforeRequestSent (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.5.6.2 · W3C WD 2026-06-29 Risk read Priority P1 Last verified 2026-07-09
	BIDI-068	network.fetchError	event	Observe Fetch Error	Consumed event	Proposed	Proposed	Planned	Integrated · test pending	Test pending
Implementation Event is subscribed/routed by the Browserlane session, process or trace pipeline. Source evidence `src/api/recording.rs:672` Arguments / defaults Event filter and session are caller-supplied; subscription id, cursor and buffering are engine-managed. Exposure decision Advanced public CLI bl events tail --include network.fetchError · Proposed · Advanced MCP browser_events_read · Proposed · Advanced · profile: debugging Skill workflow Planned · bl events tail --include network.fetchError (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.5.6.3 · W3C WD 2026-06-29 Risk read Priority P1 Last verified 2026-07-09
	BIDI-069	network.responseCompleted	event	Observe Response Completed	Consumed event	Proposed	Proposed	Planned	Integrated · test pending	Test pending
Implementation Event is subscribed/routed by the Browserlane session, process or trace pipeline. Source evidence `src/api/router.rs:260` Arguments / defaults Event filter and session are caller-supplied; subscription id, cursor and buffering are engine-managed. Exposure decision Advanced public CLI bl events tail --include network.responseCompleted · Proposed · Advanced MCP browser_events_read · Proposed · Advanced · profile: debugging Skill workflow Planned · bl events tail --include network.responseCompleted (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.5.6.4 · W3C WD 2026-06-29 Risk read Priority P1 Last verified 2026-07-09
	BIDI-070	network.responseStarted	event	Observe Response Started	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Event filter and session are caller-supplied; subscription id, cursor and buffering are engine-managed. Exposure decision Advanced public CLI bl events tail --include network.responseStarted · Proposed · Advanced MCP browser_events_read · Proposed · Advanced · profile: debugging Skill workflow Planned · bl events tail --include network.responseStarted (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.5.6.5 · W3C WD 2026-06-29 Risk read Priority P1 Last verified 2026-07-09
	BIDI-071	script.addPreloadScript	command	Install an init script before page code	Native	Internal	Not exposed	N/A	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_storage.rs:380` Arguments / defaults Script is caller-supplied; preload id and cleanup are engine-managed. Exposure decision Advanced public CLI bl script preload add · Internal · Advanced MCP browser_script · Not exposed · Advanced · profile: debugging Skill workflow Not applicable — no user-facing CLI workflow Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.6.4.1 · W3C WD 2026-06-29 Risk dangerous Priority P1 Last verified 2026-07-09
	BIDI-072	script.disown	command	Release retained script handles	Missing	Not exposed	Proposed (raw)	N/A	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Normal callers never manage handles; engine cleanup is mandatory. Exposure decision Internal CLI bl bidi call script.disown · Not exposed · Raw MCP browser_bidi_call · Proposed (raw) · Raw · profile: protocol Skill workflow Not applicable — no user-facing CLI workflow Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.6.4.2 · W3C WD 2026-06-29 Risk read Priority P1 Last verified 2026-07-09
	BIDI-073	script.callFunction	command	Execute an engine function or element operation	Native	Internal	Internal	N/A	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_emulation.rs:224` Arguments / defaults Function, realm, ownership and handles are internal for semantic operations. Exposure decision Internal CLI bl eval · Internal · Advanced MCP browser_evaluate · Internal · Advanced · profile: core Skill workflow Not applicable — no user-facing CLI workflow Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.6.4.3 · W3C WD 2026-06-29 Risk dangerous Priority P0 Last verified 2026-07-09
	BIDI-074	script.evaluate	command	Evaluate JavaScript in the active page	Native	`bl eval <expression>`	`browser_evaluate`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_state.rs:560` Arguments / defaults Expression is explicit; default to no retained ownership and a dedicated sandbox. Exposure decision Semantic public CLI bl eval <expression> · Shipped · Advanced MCP browser_evaluate · Shipped · Advanced · profile: core Skill workflow Documented · bl eval <expression> (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.6.4.4 · W3C WD 2026-06-29 Risk dangerous Priority P0 Last verified 2026-07-09
	BIDI-075	script.getRealms	command	Get Realms	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Script and target intent are caller-supplied; realm, sandbox, handles, ownership and disown cleanup are engine-managed. Exposure decision Advanced public CLI bl script get-realms · Proposed · Advanced MCP browser_script · Proposed · Advanced · profile: debugging Skill workflow Planned · bl script get-realms (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.6.4.5 · W3C WD 2026-06-29 Risk dangerous Priority P1 Last verified 2026-07-09
	BIDI-076	script.removePreloadScript	command	Remove an installed init script	Missing	Not exposed	Proposed	N/A	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Caller selects a Browserlane script name; raw preload id is internal. Exposure decision Advanced public CLI bl script preload remove · Not exposed · Advanced MCP browser_script · Proposed · Advanced · profile: debugging Skill workflow Not applicable — no user-facing CLI workflow Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.6.4.6 · W3C WD 2026-06-29 Risk write Priority P1 Last verified 2026-07-09
	BIDI-077	script.message	event	Observe Message	Consumed event	Proposed	Proposed	Planned	Integrated · test pending	Test pending
Implementation Event is subscribed/routed by the Browserlane session, process or trace pipeline. Source evidence `src/api/router.rs:91` Arguments / defaults Event filter and session are caller-supplied; subscription id, cursor and buffering are engine-managed. Exposure decision Advanced public CLI bl events tail --include script.message · Proposed · Advanced MCP browser_events_read · Proposed · Advanced · profile: debugging Skill workflow Planned · bl events tail --include script.message (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.6.5.1 · W3C WD 2026-06-29 Risk read Priority P1 Last verified 2026-07-09
	BIDI-078	script.realmCreated	event	Observe Realm Created	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Event filter and session are caller-supplied; subscription id, cursor and buffering are engine-managed. Exposure decision Advanced public CLI bl events tail --include script.realmCreated · Proposed · Advanced MCP browser_events_read · Proposed · Advanced · profile: debugging Skill workflow Planned · bl events tail --include script.realmCreated (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.6.5.2 · W3C WD 2026-06-29 Risk read Priority P1 Last verified 2026-07-09
	BIDI-079	script.realmDestroyed	event	Observe Realm Destroyed	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Event filter and session are caller-supplied; subscription id, cursor and buffering are engine-managed. Exposure decision Advanced public CLI bl events tail --include script.realmDestroyed · Proposed · Advanced MCP browser_events_read · Proposed · Advanced · profile: debugging Skill workflow Planned · bl events tail --include script.realmDestroyed (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.6.5.3 · W3C WD 2026-06-29 Risk read Priority P1 Last verified 2026-07-09
	BIDI-080	storage.getCookies	command	List or retrieve cookies	Native	`bl cookies get\|list`	`browser_cookie_get / browser_cookie_list`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_storage.rs:23` Arguments / defaults Filters are caller-supplied; partition/userContext defaults to the active session. Exposure decision Semantic public CLI bl cookies get\|list · Shipped · Advanced MCP browser_cookie_get / browser_cookie_list · Shipped · Advanced · profile: testing Skill workflow Documented · bl cookies get\|list (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.7.3.1 · W3C WD 2026-06-29 Risk read Priority P0 Last verified 2026-07-09
	BIDI-081	storage.setCookie	command	Set a cookie	Native	`bl cookies set`	`browser_cookie_set`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_storage.rs:80` Arguments / defaults Cookie attributes are caller-supplied; default partition comes from the current session. Exposure decision Semantic public CLI bl cookies set · Shipped · Advanced MCP browser_cookie_set · Shipped · Advanced · profile: testing Skill workflow Documented · bl cookies set (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.7.3.2 · W3C WD 2026-06-29 Risk dangerous Priority P0 Last verified 2026-07-09
	BIDI-082	storage.deleteCookies	command	Delete matching cookies	Native	`bl cookies delete\|clear`	`browser_cookie_delete / browser_cookie_clear`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_storage.rs:142` Arguments / defaults Filters must be explicit enough to avoid cross-domain deletion. Exposure decision Semantic public CLI bl cookies delete\|clear · Shipped · Advanced MCP browser_cookie_delete / browser_cookie_clear · Shipped · Advanced · profile: testing Skill workflow Documented · bl cookies delete\|clear (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.7.3.3 · W3C WD 2026-06-29 Risk dangerous Priority P0 Last verified 2026-07-09
	BIDI-083	log.entryAdded	event	Inspect console output and page errors	Consumed event	Proposed	Proposed	Planned	Integrated · test pending	Test pending
Implementation Event is subscribed/routed by the Browserlane session, process or trace pipeline. Source evidence `src/api/handlers_network.rs:3` Arguments / defaults Subscribe at trace/debug level; buffer with limits and redact sensitive content. Exposure decision Semantic public CLI bl console list\|wait · Proposed · Advanced MCP browser_console · Proposed · Advanced · profile: debugging Skill workflow Planned · bl console list\|wait (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.8.3.1 · W3C WD 2026-06-29 Risk read Priority P0 Last verified 2026-07-09
	BIDI-084	input.performActions	command	Perform clicks, typing, mouse, touch and drag gestures	Native	`bl click\|type\|mouse\|drag`	`browser_click / browser_type / browser_mouse_* / browser_drag`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_interaction.rs:336` Arguments / defaults Semantic intent is caller-supplied; input source arrays, coordinates and timing are engine-generated. Exposure decision Internal CLI bl click\|type\|mouse\|drag · Shipped · Public MCP browser_click / browser_type / browser_mouse_* / browser_drag · Shipped · Public · profile: core Skill workflow Documented · bl click\|type\|mouse\|drag (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.9.3.1 · W3C WD 2026-06-29 Risk write Priority P0 Last verified 2026-07-09
	BIDI-085	input.releaseActions	command	Guarantee input-state cleanup	Missing	Internal	Internal	N/A	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Always run in cleanup/finally; never require user invocation. Exposure decision Internal CLI No dedicated CLI · Internal · Internal MCP No dedicated MCP tool · Internal · Internal · profile: internal Skill workflow Not applicable — no user-facing CLI workflow Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.9.3.2 · W3C WD 2026-06-29 Risk write Priority P0 Last verified 2026-07-09
	BIDI-086	input.setFiles	command	Upload local files	Native	`bl upload <locator> <files...>`	`browser_upload`	Documented	Integrated · test pending	Test pending
Implementation Direct BiDi command is present in the Browserlane source. Source evidence `src/api/handlers_interaction.rs:444` Arguments / defaults Locator/files are explicit; context and element handle are derived; enforce path policy. Exposure decision Semantic public CLI bl upload <locator> <files...> · Shipped · Public MCP browser_upload · Shipped · Public · profile: core Skill workflow Documented · bl upload <locator> <files...> (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.9.3.3 · W3C WD 2026-06-29 Risk dangerous Priority P0 Last verified 2026-07-09
	BIDI-087	input.fileDialogOpened	event	Detect and handle a file chooser	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Always-on while awaiting upload; dialog/context ids remain internal. Exposure decision Semantic public CLI bl upload / bl events wait input.fileDialogOpened · Proposed · Advanced MCP browser_event_wait · Proposed · Advanced · profile: debugging Skill workflow Planned · bl upload / bl events wait input.fileDialogOpened (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.9.4.1 · W3C WD 2026-06-29 Risk read Priority P1 Last verified 2026-07-09
	BIDI-088	webExtension.install	command	Install a browser extension	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Extension path/data is caller-supplied; extension id is returned and tracked by the engine. Exposure decision Advanced public CLI bl extension install · Proposed · Advanced MCP browser_extension · Proposed · Advanced · profile: debugging Skill workflow Planned · bl extension install (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.10.3.1 · W3C WD 2026-06-29 Risk dangerous Priority P2 Last verified 2026-07-09
	BIDI-089	webExtension.uninstall	command	Uninstall a browser extension	Missing	Proposed	Proposed	Planned	Not integrated	Not tested
Implementation No native command/event integration identified in the current Browserlane source audit. Source evidence — Arguments / defaults Extension path/data is caller-supplied; extension id is returned and tracked by the engine. Exposure decision Advanced public CLI bl extension uninstall · Proposed · Advanced MCP browser_extension · Proposed · Advanced · profile: debugging Skill workflow Planned · bl extension uninstall (teaches the CLI; not a separate implementation) Chrome browser BiDi support Not verified (browser-side, tracked independently) Chrome evidence wpt.fyi results Spec section §7.10.3.2 · W3C WD 2026-06-29 Risk dangerous Priority P2 Last verified 2026-07-09

Capability names link to their section in the tracked specification snapshot; source evidence cites the engine file and line the audit verified (the engine is closed-source, so the citation itself is the evidence). See the status model for what each label means.