type_text_to_element_by_selector

THE RISK

Medium Risk

Why type_text_to_element_by_selector needs a policy

This tool writes/inputs text into UI elements in macOS applications. It modifies the state of UI elements by entering text, which is a write operation. It could be misused to enter malicious input into forms, terminal windows, or other text fields, but effects are generally reversible (text can be cleared/changed).

From the tool's definition Type text into a UI element using JSONPath selector

Documented attack patterns abuse exactly the kind of access type_text_to_element_by_selector gives an agent:

POLICY

How to control type_text_to_element_by_selector

PolicyLayer is an MCP gateway — it sits between your AI agents and Playwright MCP for macOS, and nothing reaches the server without passing your rules. This is the rule we recommend for type_text_to_element_by_selector:

policy.json

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

type_text_to_element_by_selector 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.

Create a free account and register Playwright MCP for macOS — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Playwright MCP for macOS tools

Execute click_at_position Click at a specific screen position using coordinates. Execute click_element_by_selector Click a UI element using accessibility actions (AXPress) via JSONPath selector. Read check_accessibility_permissions Check if accessibility permissions are properly configured. Read find_elements Find UI elements matching a JSONPath selector. Read find_elements_in_app find_elements_in_app Read get_app_overview Get a quick overview of all running applications with shallow UI inspection. Read get_element_details Get detailed information about a specific UI element. Read list_running_applications List all currently running applications with basic info.

All 9 Playwright MCP for macOS tools →

Write tools on other servers

M-Team MCP Server download_torrent YouTube MCP Server generate_video_title Android Forensics ADB MCP Server combine_reports 0xarchive web3_signup

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about type_text_to_element_by_selector

What does the type_text_to_element_by_selector tool do? +

Type text into a UI element using JSONPath selector. It is categorised as a Write tool in the Playwright MCP for macOS MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on type_text_to_element_by_selector? +

Register the Playwright MCP for macOS MCP server in PolicyLayer and add a rule for type_text_to_element_by_selector: 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 Playwright MCP for macOS. Nothing to install.

What risk level is type_text_to_element_by_selector? +

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

Can I rate-limit type_text_to_element_by_selector? +

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

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

type_text_to_element_by_selector is provided by the Playwright MCP for macOS MCP server (mb-dev/macos-ui-automation-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Playwright MCP for macOS tool call.

Start from Playwright MCP for macOS, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →