vitro

Thirty-eight tools.

Identical through MCP, the CLI and the HTTP API. All three call one registry, so none of them can drift out of step with the others.

Sessions

create_session
Isolated context. Returns a lease, once.
list_sessions
Yours unless you ask for all. Never a lease.
session_info
Owner and page ids.
reattach
Recover sessions and leases after a restart.
close_session
Close it, free the slot.
status
Live sessions, quota, browser.

Pages

new_page
Open and wait.
navigate
Go somewhere, wait.
list_pages
Ids, URLs, titles.
get_page_state
URL, title, real HTTP status, viewport. Cheap.
wait_for
Until text appears, goes, or a predicate holds.
close_page
Close it, free the slot.

Acting on a page

snapshot
Accessibility tree. The only source of things you can click.
click · hover
Refused, with a reason, if covered or disabled.
fill · type_text
Replace a value, or type it key by key.
select_option
By value, label or text.
press_key
No element involved.
drag
One element onto another.
upload_file
Onto a file input.
handle_dialog
Alert, confirm, prompt, beforeunload.
evaluate
JavaScript in the page, value back.

What happened

get_events
Browser events and the agent's own calls, one timeline.
get_errors
Exceptions, failed requests, Chrome's audit issues.
get_console_logs
Filterable by level.
list_network_requests
By status class, type or URL.
get_network_request
In full, body included.
get_html · screenshot
Markup, or a picture by reference.

Conditions and performance

emulate · resize
Device, viewport, UA, scheme, touch.
set_network_conditions
Throttle, add latency, go offline.
get_storage_state
Cookies and storage.
set_storage_state
Put them back. Logins are reusable.
get_performance_metrics
Timings and Web Vitals. No queue.
run_audit · get_audit
Real Lighthouse, own browser, one slot. Returns a ticket.