browser_resize · AWS IoT SiteWise MCP Server MCP

WHAT IT DOES

What browser_resize does on AWS IoT SiteWise MCP Server

AI agents call browser_resize as a supporting operation in AWS IoT SiteWise MCP Server workflows.

WHY IT NEEDS A POLICY

Why browser_resize needs a policy

The tool name suggests a browser window resize action, which is a UI/display operation with minimal security impact. However, the description is empty, making it impossible to confirm actual behavior. It seems out of place on an AWS IoT SiteWise MCP server, which further reduces confidence.

From the tool's definition Tool name is 'browser_resize' and description is empty or uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

browser_resize Rate-limited

browser_resize gets a rate cap, and everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "browser_resize": {
      "limits": [
        {
          "counter": "browser_resize_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

SET A RULE FOR THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about browser_resize

What does the browser_resize tool do? +

browser_resize. It is categorised as a Other tool in the AWS IoT SiteWise MCP Server MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on browser_resize? +

Register the AWS IoT SiteWise MCP Server MCP server in PolicyLayer and add a rule for browser_resize: 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 AWS IoT SiteWise MCP Server. Nothing to install.

What risk level is browser_resize? +

browser_resize is a Other tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit browser_resize? +

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

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

browser_resize is provided by the AWS IoT SiteWise MCP Server MCP server (awslabs.aws-iot-sitewise-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.