switch_to_iframe · Selenium MCP Server MCP: Risk & Policy

WHAT IT DOES

What switch_to_iframe does on Selenium MCP Server

AI agents invoke switch_to_iframe to trigger actions in Selenium MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why switch_to_iframe needs a policy

Switching to an iframe changes the browser's active frame context, enabling subsequent interactions within that frame. This is a browser action that executes a WebDriver operation with real effects on the browser state. It falls under Execute as it triggers an external browser operation.

From the tool's definition 'switches to an iframe' — browser navigation/context switching action via Selenium WebDriver

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

switch_to_iframe Rate-limited

switch_to_iframe stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "switch_to_iframe": {
      "limits": [
        {
          "counter": "switch_to_iframe_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-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 switch_to_iframe

What does the switch_to_iframe tool do? +

switches to an iframe. It is categorised as a Execute tool in the Selenium MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on switch_to_iframe? +

Register the Selenium MCP Server MCP server in PolicyLayer and add a rule for switch_to_iframe: 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 switch_to_iframe? +

switch_to_iframe is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit switch_to_iframe? +

Yes. Add a rate_limit block to the switch_to_iframe 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 switch_to_iframe completely? +

Set action: deny in the PolicyLayer policy for switch_to_iframe. 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 switch_to_iframe? +

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