name_tab · Selenium MCP Server MCP: Risk & Policy

WHAT IT DOES

What name_tab does on Selenium MCP Server

AI agents use name_tab to create or update resources in Selenium MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Selenium MCP Server environment.

WHY IT NEEDS A POLICY

Why name_tab needs a policy

This tool modifies browser tab state (renaming/labeling) reversibly, making it a Write action. While not as severe as Execute operations (which trigger external effects) or Destructive operations (irreversible), it does alter application state.

From the tool's definition Tool name 'name_tab' suggests renaming or labeling a browser tab. In the context of Selenium WebDriver, this would modify tab metadata/state. The description is empty, which lowers confidence slightly.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

name_tab Rate-limited

name_tab stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "name_tab": {
      "limits": [
        {
          "counter": "name_tab_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Selenium MCP Server, so you can run agents against it safely.

FAQ

Questions about name_tab

What does the name_tab tool do? +

name_tab. It is categorised as a Write tool in the Selenium MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on name_tab? +

Register the Selenium MCP Server MCP server in PolicyLayer and add a rule for name_tab: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Selenium MCP Server. Nothing to install.

What risk level is name_tab? +

name_tab is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit name_tab? +

Yes. Add a rate_limit block to the name_tab rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block name_tab completely? +

Set action: deny in the PolicyLayer policy for name_tab. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides name_tab? +

name_tab is provided by the Selenium MCP Server MCP server (nayakprashant/selenium-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.