renef_server_start

Starts renef_server on the connected Android device.

SERVERRenef SOURCEahmeth4n/renef-mcp

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/ahmeth4n-renef-mcp/renef-server-start.md

WHAT IT DOES

What renef_server_start does on Renef

AI agents invoke renef_server_start to trigger actions in Renef. 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.

RISK

Why renef_server_start is rated High

This tool executes a service that enables dynamic instrumentation and reverse engineering on a live Android device. While not permanently destructive, starting a hooking/interception server is an Execute action with high blast radius: it can intercept calls, manipulate memory, and alter app behavior in ways dependent on subsequent instrumentation setup.

From the tool's definition Tool starts a server (renef_server) on an Android device. The parent server description explicitly mentions 'native hooking, Java interception, and memory manipulation'—capabilities that execute code and modify runtime behavior.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs renef_server_start safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Renef, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For renef_server_start, this is the rule to start with:

renef_server_start Rate-limited

renef_server_start 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": {
    "renef_server_start": {
      "limits": [
        {
          "counter": "renef_server_start_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Renef, apply this rule, and every renef_server_start call is checked against it from then on.

FAQ

Questions about renef_server_start

What does the renef_server_start tool do? +

Starts renef_server on the connected Android device. It is categorised as a Execute tool in the Renef MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on renef_server_start? +

Register the Renef MCP server in PolicyLayer and add a rule for renef_server_start: 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 Renef. Nothing to install.

What risk level is renef_server_start? +

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

Can I rate-limit renef_server_start? +

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

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

renef_server_start is provided by the Renef MCP server (ahmeth4n/renef-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Renef, and thousands of servers like it.

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All 75 Renef tools → High-risk tools on this server →

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Guides

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