touch · Sl Test MCP: Risk & Policy

WHAT IT DOES

What touch does on Sl Test

AI agents invoke touch to trigger actions in Sl Test. 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 touch needs a policy

This tool triggers external operations (touch input events) on a device/simulator UI, which can cause arbitrary actions depending on what UI elements are at the target coordinates. Misuse could trigger unintended UI actions including destructive or financial operations within the app under test.

From the tool's definition Perform touch down/up events at specific coordinates

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

touch Rate-limited

touch 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": {
    "touch": {
      "limits": [
        {
          "counter": "touch_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 Sl Test, so you can run agents against it safely.

FAQ

Questions about touch

What does the touch tool do? +

Perform touch down/up events at specific coordinates. Use describe_ui for precise coordinates (don. It is categorised as a Execute tool in the Sl Test MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on touch? +

Register the Sl Test MCP server in PolicyLayer and add a rule for touch: 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 Sl Test. Nothing to install.

What risk level is touch? +

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

Can I rate-limit touch? +

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

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

touch is provided by the Sl Test MCP server (sampsonky/xcodebuildmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.