Manage tab groups for session isolation. Multiple users/agents sharing one browser MUST create a tab group first, then pass the groupId to browser_tabs and other tools. This ensures each session only sees and controls its own tabs.

Actions:

• 'create': Create a new tab group. Returns a groupId to use with all other browser tools.

• 'list': List all tab groups with tab counts.

• 'delete': Delete a tab group and optionally close its tabs.

⚡ IMPORTANT: Always create a tab group before opening tabs with browser_tabs.

Manage browser tabs. When using tab groups (recommended for multi-user), pass groupId to scope operations to your group's tabs only.

Actions:

• 'list': Show tabs. With groupId → only your group's tabs. Without → all tabs.

• 'new': Create a tab. If groupId is provided, the tab is added to that group.

• 'close': Close a tab by index or targetId.

• 'select': Focus a tab by index or targetId.

⚡ IMPORTANT: Create a tab group first for multi-user isolation. Ungrouped tabs remain available as a fallback for local manual testing.

Navigate to a URL in a specific tab. Use targetId from browser_tabs to specify which tab.

Capture accessibility tree snapshot of the current page. Returns element references (e1, e2, etc.) that can be used with other browser tools like click, type, etc.

Click an element by its ref (e1, e2, etc. from snapshot)

Type text into an element

Hover over an element

Press a keyboard key

Fill multiple form fields at once

Wait for a condition (text, selector, load state, time, etc.)

Execute JavaScript in the page context via Playwright's page.evaluate(). Use for interacting with elements not in the accessibility snapshot (portal divs, framework overlays, shadow DOM). Can run arbitrary JS — click hidden elements, extract data, manipulate the DOM. Optionally scope to a specific element via ref.

Take a screenshot of the current page or a specific element. By default saves to file and returns the path (saves context window tokens). Use ref to screenshot a specific element (from snapshot refs like e1, e2), or element for a CSS selector. Omit both for a full page screenshot.

Capture a structured checkpoint for the current page or a specific tab. Stores checkpoint artifacts and a manifest under the server-managed checkpoint directory.

Generate an HTML, Markdown, or MDX report from stored MCP checkpoint manifests.