call_rpc

Call an RPC export from a loaded script.

SERVERFrida Game Hacking MCP SOURCE0xhackerfren/frida-game-hacking-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/0xhackerfren-frida-game-hacking-mcp/call-rpc.md

WHAT IT DOES

What call_rpc does on Frida Game Hacking MCP

AI agents invoke call_rpc to trigger actions in Frida Game Hacking MCP. 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 call_rpc is rated High

This tool executes RPC calls into scripts loaded within a target process via Frida. In a game hacking/reverse engineering context, this enables arbitrary code execution within the target process. The effects depend entirely on the loaded script and RPC function being called, which could range from reading memory to injecting code or modifying game state.

From the tool's definition Call an RPC export from a loaded script

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs call_rpc safely

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

call_rpc Rate-limited

call_rpc 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": {
    "call_rpc": {
      "limits": [
        {
          "counter": "call_rpc_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 Frida Game Hacking MCP, apply this rule, and every call_rpc call is checked against it from then on.

FAQ

Questions about call_rpc

What does the call_rpc tool do? +

Call an RPC export from a loaded script. It is categorised as a Execute tool in the Frida Game Hacking MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on call_rpc? +

Register the Frida Game Hacking MCP server in PolicyLayer and add a rule for call_rpc: 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 Frida Game Hacking MCP. Nothing to install.

What risk level is call_rpc? +

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

Can I rate-limit call_rpc? +

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

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

call_rpc is provided by the Frida Game Hacking MCP server (0xhackerfren/frida-game-hacking-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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