unidbg_call

Call a JNI function in a running Unidbg emulator session.

SERVERJshookmcp SOURCE@jshookmcp/jshook

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/io-github-vmoranv-jshookmcp/unidbg-call.md

WHAT IT DOES

What unidbg_call does on Jshookmcp

AI agents invoke unidbg_call to trigger actions in Jshookmcp. 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 unidbg_call is rated High

Executes native JNI functions inside an emulator, triggering arbitrary native code execution.

From the tool's definition Call a JNI function in a running Unidbg emulator session

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs unidbg_call safely

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

unidbg_call Rate-limited

unidbg_call 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": {
    "unidbg_call": {
      "limits": [
        {
          "counter": "unidbg_call_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 Jshookmcp, apply this rule, and every unidbg_call call is checked against it from then on.

FAQ

Questions about unidbg_call

What does the unidbg_call tool do? +

Call a JNI function in a running Unidbg emulator session. It is categorised as a Execute tool in the Jshookmcp MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on unidbg_call? +

Register the Jshook MCP server in PolicyLayer and add a rule for unidbg_call: 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 Jshookmcp. Nothing to install.

What risk level is unidbg_call? +

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

Can I rate-limit unidbg_call? +

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

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

unidbg_call is provided by the Jshook MCP server (@jshookmcp/jshook). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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