// SCAN REPORT

MCP Browser Tabs Server

4 tools. 3 can modify or destroy data without limits.

2 destructive tools with no built-in limits. Policy required.

Last updated: 12 Jun 2026

3 can modify or destroy data

1 read-only

4 tools total

Community server · catalogue entry verified 12/06/2026

How to control MCP Browser Tabs Server ↓

TOOL MAP

What MCP Browser Tabs Server exposes to your agents

Read (1) Write / Execute (1) Destructive / Financial (2)

Running more than one server? Check your whole stack →

MOST DANGEROUS TOOLS

Critical Risk

The most dangerous MCP Browser Tabs Server tools

Destructive · High close_tab Closing a browser tab is effectively irreversible — any unsaved data, form inputs, or session state in that tab is lost. Destructive · High close_tab_by_id Closing a browser tab is a destructive action: the tab's session, unsaved content, and navigation history are irrecoverably lost. Execute · Medium activate_tab_by_id This tool triggers an external browser operation (focusing/activating a tab) via AppleScript, which constitutes executing an action in an external application.

3 of MCP Browser Tabs Server's 4 tools can modify, destroy, or commit something on every call — and an agent calls them with no built-in limits.

POLICY

How to control MCP Browser Tabs Server

PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Browser Tabs Server, and nothing reaches the server without passing your rules. These are the rules we recommend:

Deny destructive operations

{
  "close_tab": {
    "deny_if": [
      {
        "conditions": [],
        "on_deny": "Blocked by default. Requires approval."
      }
    ]
  }
}

Destructive tools should never be available to autonomous agents without human approval.

Cap read operations

{
  "get_tabs": {
    "limits": [
      {
        "counter": "get_tabs_per_minute",
        "window": "minute",
        "max": 60,
        "scope": "grant"
      }
    ]
  }
}

Controls API costs and prevents retry loops from exhausting upstream rate limits.

Create a free account and register MCP Browser Tabs Server — nothing to install.
Add these rules — paste them, or build them visually. Tune the limits to your setup.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

ENFORCE POLICY ON MCP BROWSER TABS →

Free to start. No card required.

FULL CATALOGUE

All 4 MCP Browser Tabs Server tools

DESTRUCTIVE 2 tools

Destructive close_tab ⚠️ LEGACY DANGER: Close a specific tab using window/tab index. HIGH RISK of closing wrong tabs due to index sh Destructive close_tab_by_id 🔥 PREFERRED METHOD: Close a specific tab in Google Chrome using its unique tab ID. IMMUNE to tab reordering,

EXECUTE 1 tools

Execute activate_tab_by_id 🔥 PREFERRED METHOD: Activate (focus) a specific tab in Google Chrome using its unique tab ID. Brings the tab

READ 1 tools

Read get_tabs Get all open tabs from Google Chrome browser with unique tab IDs. Each tab has a stable, unique ID that persis

FAQ

Questions about MCP Browser Tabs Server

Can an AI agent delete data through the MCP Browser Tabs Server MCP server? +

Yes. The MCP Browser Tabs Server server exposes 2 destructive tools including close_tab, close_tab_by_id. These permanently remove resources with no undo. PolicyLayer blocks destructive tools by default so they never reach the upstream server.

How many tools does the MCP Browser Tabs Server MCP server expose? +

4 tools across 2 categories: Read, Write. 1 are read-only. 3 can modify, create, or delete data.

How do I enforce a policy on MCP Browser Tabs Server? +

Register the MCP Browser Tabs Server MCP server in PolicyLayer, apply the suggested rules above (adjust the limits to your use case), and point your AI client at the PolicyLayer proxy URL instead of the server directly. Your agents keep the same tools; PolicyLayer evaluates every call against policy before it executes. Nothing to install, live in minutes.

Enforce policy on every MCP Browser Tabs Server tool call.

Deterministic rules across all 4 MCP Browser Tabs Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

ENFORCE POLICY ON MCP BROWSER TABS →

Free to start. No card required.

4 MCP Browser Tabs Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.