Tabs

browser_tabs

Manage browser tabs — list, create, close, or select a tab.

Parameter	Type	Required	Description
action	string	yes	list, new, close, or select
index	number	no	Tab index, used for close/select. If omitted for close, the current tab is closed
url	string	no	URL to navigate to in the new tab, used for new

Every action returns the resulting tab list.

List all tabs

→ browser_tabs { action: "list" }

  - 0: [](about:blank)
  - 1: (current) [React • TodoMVC](https://demo.playwright.dev/todomvc)
  - 2: [Example Domain](https://example.com)

Tabs are numbered from 0, the active one is marked (current), and a crashed tab is marked [crashed].

Open a new tab

→ browser_tabs { action: "new", url: "https://example.com" }
→ Returns a snapshot of the new tab

Omit url to open a blank tab.

Switch to a tab

→ browser_tabs { action: "select", index: 1 }

Close a tab

→ browser_tabs { action: "close" }           // close current tab
→ browser_tabs { action: "close", index: 2 } // close specific tab

Workflow: comparing two pages

You: Open staging and production, compare the headers.

→ browser_navigate { url: "https://staging.example.com" }
→ browser_snapshot   // snapshot of staging
→ browser_tabs { action: "new", url: "https://example.com" }
→ browser_snapshot   // snapshot of production
  // LLM compares the two snapshots