set_status_bar_demo · React Native Dev MCP: Risk & Policy

WHAT IT DOES

What set_status_bar_demo does on React Native Dev

AI agents invoke set_status_bar_demo to trigger actions in React Native Dev. 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 set_status_bar_demo needs a policy

This tool modifies system UI state on a device (the status bar appearance), which constitutes an external operation/system configuration change. It is not merely reading data, and while it can be reversed (enabled: false restores), it triggers an active device-level operation. It fits Execute as it applies a system-level configuration to a running device/simulator, impacting UI state.

From the tool's definition Set a clean, deterministic status bar (9:41, full battery, full signal) for stable screenshots — or restore the real one with enabled: false

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_status_bar_demo Rate-limited

set_status_bar_demo 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": {
    "set_status_bar_demo": {
      "limits": [
        {
          "counter": "set_status_bar_demo_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 React Native Dev, so you can run agents against it safely.

FAQ

Questions about set_status_bar_demo

What does the set_status_bar_demo tool do? +

Set a clean, deterministic status bar (9:41, full battery, full signal) for stable screenshots — or restore the real one with enabled: false. It is categorised as a Execute tool in the React Native Dev MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on set_status_bar_demo? +

Register the React Native Dev MCP server in PolicyLayer and add a rule for set_status_bar_demo: 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 React Native Dev. Nothing to install.

What risk level is set_status_bar_demo? +

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

Can I rate-limit set_status_bar_demo? +

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

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

set_status_bar_demo is provided by the React Native Dev MCP server (luizhbesper/react-native-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.