connect_app · Rn Debug MCP: Risk & Policy

WHAT IT DOES

What connect_app does on Rn Debug

AI agents invoke connect_app to trigger actions in Rn Debug. 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 connect_app needs a policy

This tool initiates a connection to an external application and starts an ongoing process (log collection), triggering external operations beyond simple data retrieval. It establishes a session with side effects, making it Execute rather than Read.

From the tool's definition Connect to a running React Native app session... and start log collection

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

connect_app Rate-limited

connect_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": {
    "connect_app": {
      "limits": [
        {
          "counter": "connect_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 Rn Debug, so you can run agents against it safely.

FAQ

Questions about connect_app

What does the connect_app tool do? +

Connect to a running React Native app session on Android emulator or iOS simulator and start log collection. It is categorised as a Execute tool in the Rn Debug MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on connect_app? +

Register the Rn Debug MCP server in PolicyLayer and add a rule for connect_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 Rn Debug. Nothing to install.

What risk level is connect_app? +

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

Can I rate-limit connect_app? +

Yes. Add a rate_limit block to the connect_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 connect_app completely? +

Set action: deny in the PolicyLayer policy for connect_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 connect_app? +

connect_app is provided by the Rn Debug MCP server (rn-debug-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.