reload_app · React Native Dev MCP: Risk & Policy

WHAT IT DOES

What reload_app does on React Native Dev

AI agents invoke reload_app 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 reload_app needs a policy

This tool triggers a direct action on a running application (full JS reload), which is characteristic of Execute category—it runs an operation whose effects depend on the current state of the app and the code being reloaded. While not destructive (the reload is reversible), it is more impactful than a simple Write operation because it actively executes a complex operation on external infrastructure.

From the tool's definition 'Trigger a full JS reload of the running React Native app' indicates the tool executes an action that resets the application state and reloads JavaScript code in a live running process.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

reload_app Rate-limited

reload_app 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": {
    "reload_app": {
      "limits": [
        {
          "counter": "reload_app_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 reload_app

What does the reload_app tool do? +

Trigger a full JS reload of the running React Native app (same as pressing. 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 reload_app? +

Register the React Native Dev MCP server in PolicyLayer and add a rule for reload_app: 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 reload_app? +

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

Can I rate-limit reload_app? +

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

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

reload_app 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.