android_uiautomator_set_text · Android MCP Server MCP

WHAT IT DOES

What android_uiautomator_set_text does on Android MCP Server

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

WHY IT NEEDS A POLICY

Why android_uiautomator_set_text needs a policy

This tool modifies application UI state by setting text fields, which is a reversible write operation. While the actual impact depends on which UI elements are targeted and what application is running, the ability to programmatically set arbitrary text in UI fields (passwords, messages, form data, sensitive inputs) represents a high-severity write capability.

From the tool's definition Tool name includes 'set_text' indicating data modification. Description states 'Set text on a UI element', which is a write operation that modifies UI state on the Android device.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

android_uiautomator_set_text Rate-limited

android_uiautomator_set_text 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": {
    "android_uiautomator_set_text": {
      "limits": [
        {
          "counter": "android_uiautomator_set_text_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 Android MCP Server, so you can run agents against it safely.

FAQ

Questions about android_uiautomator_set_text

What does the android_uiautomator_set_text tool do? +

Set text on a UI element by resource ID using UIAutomator. It is categorised as a Write tool in the Android 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 android_uiautomator_set_text? +

Register the Android MCP Server MCP server in PolicyLayer and add a rule for android_uiautomator_set_text: 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 Android MCP Server. Nothing to install.

What risk level is android_uiautomator_set_text? +

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

Can I rate-limit android_uiautomator_set_text? +

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

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

android_uiautomator_set_text is provided by the Android MCP Server MCP server (jduartedj/android-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.