Feature Comparison¶

This document compares w3pilot against VibiumDev clients (Java/JS/Python), the VibiumDev MCP server, Playwright MCP, and ChromeDevTools MCP.

Overview¶

Project	Language	Type	Repository
w3pilot	Go	SDK + MCP Server	plexusone/w3pilot
VibiumDev	Go + JS/Python/Java	Daemon + MCP + Clients	VibiumDev/vibium
Playwright MCP	TypeScript	MCP Server	microsoft/playwright-mcp
ChromeDevTools MCP	TypeScript	MCP Server	ChromeDevTools/chrome-devtools-mcp

Part 1: MCP Server Comparison¶

Compare the three MCP servers for LLM agent integration.

Architecture¶

┌───────────────────────────────────────────────────────────────────┐
│                             w3pilot MCP                           │
├───────────────────────────────────────────────────────────────────┤
│  w3pilot-mcp ──► w3pilot SDK ──► BiDi Client ──► Chrome           │
│       │                                                           │
│       └── Uses official Go MCP SDK                                │
│       └── 100+ tools, comprehensive automation                    │
└───────────────────────────────────────────────────────────────────┘

┌───────────────────────────────────────────────────────────────────┐
│                           VibiumDev MCP                           │
├───────────────────────────────────────────────────────────────────┤
│  vibium mcp ──► clicker ──► BiDi Client ──► Chrome                │
│       │                                                           │
│       └── Hand-rolled JSON-RPC                                    │
│       └── ~25 tools, core automation                              │
└───────────────────────────────────────────────────────────────────┘

┌───────────────────────────────────────────────────────────────────┐
│                          Playwright MCP                           │
├───────────────────────────────────────────────────────────────────┤
│  @playwright/mcp ──► Playwright ──► CDP/BiDi ──► Chromium         │
│       │                                                           │
│       └── Official TS MCP SDK                                     │
│       └── ~45 tools (with opt-in caps)                            │
│       └── Snapshot-based (accessibility tree)                     │
└───────────────────────────────────────────────────────────────────┘

Implementation Details¶

Aspect	w3pilot	VibiumDev	Playwright MCP
Language	Go	Go	TypeScript
MCP SDK	Official Go SDK	Hand-rolled	Official TS SDK
Protocol	WebDriver BiDi	WebDriver BiDi	CDP + BiDi
Tool prefix	None	`browser_`	`browser_`
Tool count	100+	~25	~45 (with caps)
Browser	Chrome	Chrome	Chromium/Firefox/WebKit

Tool Comparison Matrix¶

Legend: :white_check_mark: = Supported, :x: = Not supported, (opt) = Requires opt-in flag

Browser Management¶

Tool	w3pilot	VibiumDev	Playwright MCP
Launch browser	`browser_launch`	`browser_start`	(auto-launch)
Quit browser	`browser_quit`	`browser_stop`	`browser_close`
Resize viewport	`set_viewport`	:x:	`browser_resize`
Get viewport	`get_viewport`	:x:	:x:

Tool	w3pilot	VibiumDev	Playwright MCP
Navigate	`navigate`	`browser_navigate`	`browser_navigate`
Back	`back`	:x:	`browser_navigate_back`
Forward	`forward`	:x:	:x:
Reload	`reload`	:x:	:x:
Scroll	`scroll`	`browser_scroll`	:x:

Element Interaction¶

Tool	w3pilot	VibiumDev	Playwright MCP
Click	`click`	`browser_click`	`browser_click`
Double-click	`dblclick`	:x:	`browser_click` (doubleClick)
Type	`type`	`browser_type`	`browser_type`
Fill	`fill`	:x:	`browser_type`
Clear	`clear`	:x:	:x:
Press key	`press`	`browser_keys`	`browser_press_key`
Check/Uncheck	`check`, `uncheck`	:x:	:x:
Select option	`select_option`	`browser_select`	`browser_select_option`
Hover	`hover`	`browser_hover`	`browser_hover`
Focus	`focus`	:x:	:x:
Drag	`drag_to`	:x:	`browser_drag`
Tap (touch)	`tap`	:x:	:x:
Set files	`set_files`	:x:	`browser_file_upload`
Fill form	`fill_form`	:x:	`browser_fill_form`
Dispatch event	`dispatch_event`	:x:	:x:

Element State¶

Tool	w3pilot	VibiumDev	Playwright MCP
Get text	`get_text`	`browser_get_text`	`browser_snapshot`
Get value	`get_value`	:x:	:x:
Get innerHTML	`get_inner_html`	`browser_get_html`	:x:
Get outerHTML	`get_outer_html`	:x:	:x:
Get innerText	`get_inner_text`	:x:	:x:
Get attribute	`get_attribute`	:x:	:x:
Get bounding box	`get_bounding_box`	:x:	:x:
Is visible	`is_visible`	:x:	:x:
Is hidden	`is_hidden`	:x:	:x:
Is enabled	`is_enabled`	:x:	:x:
Is checked	`is_checked`	:x:	:x:
Is editable	`is_editable`	:x:	:x:
Get role	`get_role`	:x:	:x:
Get label	`get_label`	:x:	:x:

Page State¶

Tool	w3pilot	VibiumDev	Playwright MCP
Get title	`get_title`	`browser_get_title`	:x:
Get URL	`get_url`	`browser_get_url`	:x:
Get content	`get_content`	:x:	:x:
Set content	`set_content`	:x:	:x:
Accessibility snapshot	`accessibility_snapshot`	:x:	`browser_snapshot`

Screenshots & PDF¶

Tool	w3pilot	VibiumDev	Playwright MCP
Screenshot	`screenshot`	`browser_screenshot`	`browser_take_screenshot`
Full page screenshot	`screenshot` (fullPage)	:x:	`browser_take_screenshot` (fullPage)
Element screenshot	`element_screenshot`	:x:	`browser_take_screenshot` (ref)
PDF	`pdf`	:x:	:x:

JavaScript¶

Tool	w3pilot	VibiumDev	Playwright MCP
Evaluate	`evaluate`	`browser_evaluate`	`browser_evaluate`
Element eval	`element_eval`	:x:	`browser_evaluate` (ref)
Add script	`add_script`	:x:	:x:
Add style	`add_style`	:x:	:x:
Run Playwright code	:x:	:x:	`browser_run_code`

Waiting¶

Tool	w3pilot	VibiumDev	Playwright MCP
Wait for element state	`wait_until`	`browser_wait`	`browser_wait_for`
Wait for selector	`wait_for_selector`	:x:	:x:
Wait for URL	`wait_for_url`	:x:	:x:
Wait for load	`wait_for_load`	:x:	:x:
Wait for function	`wait_for_function`	:x:	:x:
Wait for text	`wait_for_text`	:x:	`browser_wait_for` (text)
Wait for time	:x:	:x:	`browser_wait_for` (time)

Input Controllers¶

Tool	w3pilot	VibiumDev	Playwright MCP
Keyboard press	`keyboard_press`	`browser_keys`	`browser_press_key`
Keyboard down/up	`keyboard_down`, `keyboard_up`	:x:	:x:
Keyboard type	`keyboard_type`	:x:	:x:
Mouse click	`mouse_click`	:x:	:x:
Mouse move	`mouse_move`	:x:	:x:
Mouse down/up	`mouse_down`, `mouse_up`	:x:	:x:
Mouse wheel	`mouse_wheel`	:x:	:x:
Mouse drag	`mouse_drag`	:x:	`browser_drag`
Touch tap	`touch_tap`	:x:	:x:
Touch swipe	`touch_swipe`	:x:	:x:

Tab/Page Management¶

Tool	w3pilot	VibiumDev	Playwright MCP
New page	`new_page`	`browser_new_page`	`browser_tabs` (new)
List pages	`get_pages`, `list_tabs`	`browser_list_pages`	`browser_tabs` (list)
Switch page	`select_tab`	`browser_switch_page`	`browser_tabs` (select)
Close page	`close_page`, `close_tab`	`browser_close_page`	`browser_tabs` (close)
Bring to front	`bring_to_front`	:x:	:x:

Frame Management¶

Tool	w3pilot	VibiumDev	Playwright MCP
Get frames	`get_frames`	:x:	:x:
Select frame	`select_frame`	:x:	:x:
Select main frame	`select_main_frame`	:x:	:x:

Tool	w3pilot	VibiumDev	Playwright MCP
Get cookies	`get_cookies`	:x:	`browser_cookie_list` (opt)
Get cookie	:x:	:x:	`browser_cookie_get` (opt)
Set cookies	`set_cookies`	:x:	`browser_cookie_set` (opt)
Clear cookies	`clear_cookies`	:x:	`browser_cookie_clear` (opt)
Delete cookie	`delete_cookie`	:x:	`browser_cookie_delete` (opt)

LocalStorage¶

Tool	w3pilot	VibiumDev	Playwright MCP
Get item	`localstorage_get`	:x:	`browser_localstorage_get` (opt)
Set item	`localstorage_set`	:x:	`browser_localstorage_set` (opt)
List items	`localstorage_list`	:x:	`browser_localstorage_list` (opt)
Delete item	`localstorage_delete`	:x:	`browser_localstorage_delete` (opt)
Clear	`localstorage_clear`	:x:	`browser_localstorage_clear` (opt)

SessionStorage¶

Tool	w3pilot	VibiumDev	Playwright MCP
Get item	`sessionstorage_get`	:x:	`browser_sessionstorage_get` (opt)
Set item	`sessionstorage_set`	:x:	`browser_sessionstorage_set` (opt)
List items	`sessionstorage_list`	:x:	`browser_sessionstorage_list` (opt)
Delete item	`sessionstorage_delete`	:x:	`browser_sessionstorage_delete` (opt)
Clear	`sessionstorage_clear`	:x:	`browser_sessionstorage_clear` (opt)

Storage State¶

Tool	w3pilot	VibiumDev	Playwright MCP
Get storage state	`get_storage_state`	:x:	`browser_storage_state` (opt)
Set storage state	`set_storage_state`	:x:	`browser_set_storage_state` (opt)
Clear storage	`clear_storage`	:x:	:x:

Network¶

Tool	w3pilot	VibiumDev	Playwright MCP
Route (mock)	`route`	:x:	`browser_route` (opt)
Route list	`route_list`	:x:	`browser_route_list` (opt)
Unroute	`unroute`	:x:	`browser_unroute` (opt)
Network offline	`network_state_set`	:x:	`browser_network_state_set` (opt)
Get requests	`get_network_requests`	:x:	`browser_network_requests`
Clear requests	`clear_network_requests`	:x:	:x:

Console¶

Tool	w3pilot	VibiumDev	Playwright MCP
Get console messages	`get_console_messages`	:x:	`browser_console_messages`
Clear console	`clear_console_messages`	:x:	:x:

Dialogs¶

Tool	w3pilot	VibiumDev	Playwright MCP
Handle dialog	`handle_dialog`	:x:	`browser_handle_dialog`
Get dialog info	`get_dialog`	:x:	:x:

Emulation¶

Tool	w3pilot	VibiumDev	Playwright MCP
Emulate media	`emulate_media`	:x:	:x:
Set geolocation	`set_geolocation`	:x:	:x:
Network throttling	`emulate_network` (CDP)	:x:	:x:
CPU throttling	`emulate_cpu` (CDP)	:x:	:x:

Profiling (CDP)¶

Tool	w3pilot	VibiumDev	Playwright MCP
Heap snapshot	`take_heap_snapshot` (CDP)	:x:	:x:
Direct CDP access	`cdp_send`	:x:	:x:

Recording & Tracing¶

Tool	w3pilot	VibiumDev	Playwright MCP
Start recording	`start_recording`	:x:	:x:
Stop recording	`stop_recording`	:x:	:x:
Export script	`export_script`	:x:	:x:
Start trace	`start_trace`	:x:	`browser_start_tracing` (opt)
Stop trace	`stop_trace`	:x:	`browser_stop_tracing` (opt)
Trace chunks	`start_trace_chunk`, `stop_trace_chunk`	:x:	:x:
Trace groups	`start_trace_group`, `stop_trace_group`	:x:	:x:
Start video	`start_video`	:x:	`browser_start_video` (opt)
Stop video	`stop_video`	:x:	`browser_stop_video` (opt)

Testing & Assertions¶

Tool	w3pilot	VibiumDev	Playwright MCP
Assert text	`assert_text`	:x:	:x:
Assert element	`assert_element`	:x:	:x:
Verify value	`verify_value`	:x:	:x:
Verify text	`verify_text`	:x:	:x:
Verify visible	`verify_visible`	:x:	:x:
Verify hidden	`verify_hidden`	:x:	:x:
Verify enabled	`verify_enabled`	:x:	:x:
Verify disabled	`verify_disabled`	:x:	:x:
Verify checked	`verify_checked`	:x:	:x:
Verify list visible	`verify_list_visible`	:x:	:x:
Generate locator	`generate_locator`	:x:	:x:
Get test report	`get_test_report`	:x:	:x:
Reset session	`reset_session`	:x:	:x:
Set target	`set_target`	:x:	:x:

Human-in-the-Loop¶

Tool	w3pilot	VibiumDev	Playwright MCP
Pause for human	`pause_for_human`	:x:	:x:

Configuration¶

Tool	w3pilot	VibiumDev	Playwright MCP
Get config	`get_config`	:x:	`browser_get_config` (opt)
Add init script	`add_init_script`	:x:	:x:

Tool Count Summary¶

MCP Server	Core Tools	Opt-in Tools	Total
w3pilot	100+	-	100+
Playwright MCP	~20	~25	~45
VibiumDev	~25	-	~25

Unique Features by Server¶

w3pilot Only¶

Feature	Description
Script Runner	YAML/JSON test execution via `w3pilot run`
Session Recording	Capture actions as replayable scripts
Human-in-the-Loop	`pause_for_human` for SSO, CAPTCHA, 2FA
Test Reports	Structured reports (box, diagnostic, JSON)
Verification Tools	`verify_*` tools with detailed output
Frame Selection	`select_frame`/`select_main_frame`
Trace Chunks/Groups	Fine-grained trace control
CDP Integration	Direct Chrome DevTools Protocol access
- Heap Snapshots	V8 memory profiling
- Network Emulation	Slow 3G, Fast 3G, 4G presets
- CPU Throttling	Simulate slower CPUs

Playwright MCP Only¶

Feature	Description
`browser_run_code`	Execute arbitrary Playwright code
`browser_snapshot`	Accessibility tree snapshots
Multi-browser	Chromium, Firefox, WebKit
Opt-in capabilities	`--caps=network,storage,devtools`

VibiumDev Only¶

Feature	Description
Daemon mode	HTTP API for multi-client scenarios
Multi-language clients	Official JS, Python, Java SDKs

ChromeDevTools MCP Comparison¶

ChromeDevTools MCP is an official Chrome DevTools MCP server with 29 tools. W3Pilot provides equivalent functionality plus additional features.

Tool Mapping¶

ChromeDevTools MCP (29 tools)	W3Pilot Equivalent	Notes
Input Automation
`click`	`element_click`	✅
`drag`	`element_drag_to`	✅
`fill`	`element_fill`	✅
`fill_form`	Multiple `element_fill`	Use multiple calls
`handle_dialog`	`dialog_handle`	✅
`hover`	`element_hover`	✅
`press_key`	`input_keyboard_press`	✅
`type_text`	`element_type`	✅
`upload_file`	`element_set_files`	✅
Navigation
`close_page`	`tab_close`	✅
`list_pages`	`tab_list`	✅
`navigate_page`	`page_navigate`, `page_go_back`, `page_go_forward`, `page_reload`	✅ Split into specific tools
`new_page`	`page_new`	✅
`select_page`	`tab_select`	✅
`wait_for`	`wait_for_text`, `wait_for_selector`	✅ Multiple wait tools
Emulation
`emulate`	`page_emulate_media`, `cdp_emulate_network`, `cdp_emulate_cpu`	✅ Split into specific tools
`resize_page`	`page_set_viewport`	✅
Performance
`performance_start_trace`	`trace_start`	✅
`performance_stop_trace`	`trace_stop`	✅
`performance_analyze_insight`	`cdp_get_performance_metrics`	Core Web Vitals (LCP, CLS, INP)
`take_memory_snapshot`	`cdp_take_heap_snapshot`	✅
Network
`list_network_requests`	`network_get_requests`	✅
`get_network_request`	`cdp_get_response_body`	✅
Debugging
`evaluate_script`	`js_evaluate`	✅
`list_console_messages`	`console_get_messages`	✅
`get_console_message`	`console_get_messages`	✅ Filter by ID
`lighthouse_audit`	`cdp_run_lighthouse`	✅
`take_screenshot`	`page_screenshot`	✅
`take_snapshot`	`accessibility_snapshot`	✅

Additional W3Pilot Features (not in ChromeDevTools MCP)¶

Category	W3Pilot Tools
Session Recording	`record_start`, `record_stop`, `record_export`, `record_status`, `record_clear`
Video Capture	`video_start`, `video_stop`
Storage Management	`storage_get_cookies`, `storage_set_cookies`, `storage_local_get`, `storage_local_set`, `storage_session_get`, `storage_session_set`, `storage_get_state`, `storage_set_state`, `storage_clear_all`
Network Interception	`network_route`, `network_unroute`, `network_route_list`, `network_set_offline`
Code Coverage	`cdp_start_coverage`, `cdp_stop_coverage`
Test Assertions	`test_assert_text`, `test_assert_element`, `test_verify_value`, `test_verify_visible`, `test_verify_enabled`, `test_verify_checked`, `test_generate_locator`, `test_get_report`
Semantic Selectors	Find by role, label, placeholder, testid, alt, title, xpath, near
Frame Navigation	`frame_select`, `frame_select_main`, `frame_list`
Human-in-the-Loop	`human_pause`
Init Scripts	`js_init_script`, `js_add_script`, `js_add_style`
Trace Control	`trace_chunk_start`, `trace_chunk_stop`, `trace_group_start`, `trace_group_stop`
Clock Control	Time manipulation for testing
Geolocation	Location spoofing

Tool Count Comparison¶

MCP Server	Tools
W3Pilot	169
ChromeDevTools MCP	29
Playwright MCP	~45
VibiumDev MCP	~25

When to Use Which¶

Use Case	Recommendation
Comprehensive automation	W3Pilot (169 tools)
Simple debugging tasks	ChromeDevTools MCP
Performance tracing only	ChromeDevTools MCP
Test automation with assertions	W3Pilot
Session recording & export	W3Pilot
Storage/cookie management	W3Pilot

Part 2: Client Library Comparison¶

Compare w3pilot SDK with VibiumDev client libraries.

Language & Integration¶

Aspect	w3pilot	vibium-js	vibium-py	vibium-java
Language	Go	JavaScript/TS	Python	Java
Async model	Context-based	Promises	async/await	CompletableFuture
Error handling	Error returns	try/catch	try/except	Exceptions
Package manager	go modules	npm	pip	Maven/Gradle
Type safety	Strong	TypeScript	Type hints	Strong

Core Features¶

Feature	w3pilot	vibium-js	vibium-py	vibium-java
Launch browser	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
Headless mode	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
Connect remote	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
Multiple contexts	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:

Element Finding¶

Feature	w3pilot	vibium-js	vibium-py	vibium-java
CSS selector	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
Semantic selectors
- By role	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
- By text	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
- By label	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
- By placeholder	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
- By alt text	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
- By title	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
- By testid	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
- By xpath	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
- By proximity	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
FindAll	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
Scoped find	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:

Interactions¶

Feature	w3pilot	vibium-js	vibium-py	vibium-java
Click/Type/Fill	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
Check/Uncheck	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
Select option	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
Drag and drop	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
File upload	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
dispatchEvent	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
Highlight element	:white_check_mark:	:x:	:x:	:white_check_mark:

Input Controllers¶

Feature	w3pilot	vibium-js	vibium-py	vibium-java
Keyboard	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
Mouse	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
Touch	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:

Event Listeners¶

Feature	w3pilot	vibium-js	vibium-py	vibium-java
onConsole	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
onError	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
onRequest/onResponse	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
onDialog	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
onDownload	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
onPage/onPopup	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
onWebSocket	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:

Recording/Tracing¶

Feature	w3pilot	vibium-js	vibium-py	vibium-java
Trace recording	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
Trace chunks	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
Trace groups	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
Video recording	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:

Storage¶

Feature	w3pilot	vibium-js	vibium-py	vibium-java
Cookies	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
LocalStorage	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
SessionStorage	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
Full storage state	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
Init scripts	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
Delete single cookie	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:

Network¶

Feature	w3pilot	vibium-js	vibium-py	vibium-java
Route/mock	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
Offline mode	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
Extra headers	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:

Clock Control¶

Feature	w3pilot	vibium-js	vibium-py	vibium-java
Install/fastForward	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
pauseAt/resume	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
setFixedTime	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
setTimezone	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:

Accessibility¶

Feature	w3pilot	vibium-js	vibium-py	vibium-java
a11yTree	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
interestingOnly option	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:
root element option	:white_check_mark:	:white_check_mark:	:white_check_mark:	:white_check_mark:

When to Use Which¶

MCP Server Selection¶

Use Case	Recommendation
Comprehensive LLM automation	w3pilot MCP (100+ tools)
Simple browser control	VibiumDev MCP or Playwright MCP
Accessibility-focused	Playwright MCP (`browser_snapshot`)
Human-in-the-loop flows	w3pilot MCP (`pause_for_human`)
Test automation with reports	w3pilot MCP (verification + reports)
Multi-browser support	Playwright MCP

Client Library Selection¶

Use Case	Recommendation
Go application	w3pilot SDK
JavaScript/TypeScript app	vibium-js
Python application	vibium-py
Java/JVM application	vibium-java
Script-based automation	w3pilot (`w3pilot run`)

Relationship Between Projects¶

┌────────────────────────────────────────────────────────────────────┐
│                      VibiumDev/vibium                              │
│                                                                    │
│   ┌─────────┐  ┌─────────┐  ┌─────────┐                            │
│   │vibium-js│  │vibium-py│  │vibium-  │                            │
│   │ Client  │  │ Client  │  │java Cli │                            │
│   └────┬────┘  └────┬────┘  └────┬────┘                            │
│        └────────────┼───────────┘                                  │
│                     │ HTTP API                                     │
│                     ▼                                              │
│               ┌──────────┐                                         │
│               │ clicker  │                                         │
│               │ (binary) │                                         │
│               └────┬─────┘                                         │
│                    │ BiDi                                          │
│                    ▼                                               │
│                 Chrome                                             │
└────────────────────────────────────────────────────────────────────┘

┌────────────────────────────────────────────────────────────────────┐
│                    plexusone/w3pilot                              │
│              (dual-protocol architecture)                          │
│                                                                    │
│   ┌────────────────────────────────────────────────────────────┐   │
│   │                    w3pilot SDK                            │   │
│   │         BiDi client (automation) + CDP client (profiling)  │   │
│   └────────────────────────┬───────────────────────────────────┘   │
│                            │                                       │
│         ┌──────────────────┼──────────────────┐                    │
│         │                  │                  │                    │
│         ▼                  ▼                  ▼                    │
│    w3pilot-mcp         w3pilot run        Direct SDK             │
│         │                  │                  │                    │
│         └──────────────────┼──────────────────┘                    │
│                    ┌───────┴───────┐                               │
│                    │               │                               │
│                    ▼               ▼                               │
│               BiDi (clicker)    CDP (direct)                       │
│                    │               │                               │
│                    └───────┬───────┘                               │
│                            ▼                                       │
│                         Chrome                                     │
│                  (single browser instance)                         │
└────────────────────────────────────────────────────────────────────┘

Key point: w3pilot uses clicker (from VibiumDev) for BiDi automation commands via pipe mode, and direct CDP for profiling features. This dual-protocol architecture provides comprehensive automation with advanced performance profiling capabilities.

Legend¶

Symbol	Meaning
:white_check_mark:	Supported
:x:	Not supported
(opt)	Requires opt-in flag

Feature Comparison¶

Overview¶

Part 1: MCP Server Comparison¶

Architecture¶

Implementation Details¶

Tool Comparison Matrix¶

Browser Management¶

Navigation¶

Element Interaction¶

Element State¶

Page State¶

Screenshots & PDF¶

JavaScript¶

Waiting¶

Input Controllers¶

Tab/Page Management¶

Frame Management¶

Cookie Management¶

LocalStorage¶

SessionStorage¶

Storage State¶

Network¶

Console¶

Dialogs¶

Emulation¶

Profiling (CDP)¶

Recording & Tracing¶

Testing & Assertions¶

Human-in-the-Loop¶

Configuration¶

Tool Count Summary¶

Unique Features by Server¶

w3pilot Only¶

Playwright MCP Only¶

VibiumDev Only¶

ChromeDevTools MCP Comparison¶

Tool Mapping¶

Additional W3Pilot Features (not in ChromeDevTools MCP)¶

Tool Count Comparison¶

When to Use Which¶

Part 2: Client Library Comparison¶

Language & Integration¶

Core Features¶

Element Finding¶

Interactions¶

Input Controllers¶

Event Listeners¶

Recording/Tracing¶

Storage¶

Network¶

Clock Control¶

Accessibility¶

When to Use Which¶

MCP Server Selection¶

Client Library Selection¶

Relationship Between Projects¶

Legend¶