select · Chromium ARM64 Browser MCP: Risk & Policy

WHAT IT DOES

What select does on Chromium ARM64 Browser

AI agents use select to create or update resources in Chromium ARM64 Browser — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Chromium ARM64 Browser environment.

WHY IT NEEDS A POLICY

Why select needs a policy

Selecting a dropdown option modifies the page's interactive state and form inputs, qualifying as a Write action rather than Read (which would be passive retrieval). It does not execute arbitrary code (Execute), delete data (Destructive), or move money (Financial).

From the tool's definition The tool "Select an option from a dropdown" modifies form state by selecting a value, which changes data in the browser's DOM and form state. This is a form-filling action that creates or updates data reversibly, consistent with Write operations.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

select Rate-limited

select 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": {
    "select": {
      "limits": [
        {
          "counter": "select_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 Chromium ARM64 Browser, so you can run agents against it safely.

FAQ

Questions about select

What does the select tool do? +

Select an option from a dropdown. It is categorised as a Write tool in the Chromium ARM64 Browser MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on select? +

Register the Chromium ARM64 Browser MCP server in PolicyLayer and add a rule for select: 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 Chromium ARM64 Browser. Nothing to install.

What risk level is select? +

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

Can I rate-limit select? +

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

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

select is provided by the Chromium ARM64 Browser MCP server (nfodor/mcp-chromium-arm64). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.