nemu_capabilities

Report native-emulator backend availability, supported features, and explicit ISA/SIMD gaps. Unsupported opcodes fail loudly instead of being reported as emulated.

SERVERJshookmcp SOURCE@jshookmcp/jshook

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-vmoranv-jshookmcp/nemu-capabilities.md

WHAT IT DOES

What nemu_capabilities does on Jshookmcp

AI agents call nemu_capabilities to retrieve information from Jshookmcp without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why nemu_capabilities is rated Low

Queries emulator capabilities and reports diagnostic information without modifying or executing code.

From the tool's definition Report native-emulator backend availability, supported features, and explicit gaps.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs nemu_capabilities 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 nemu_capabilities, this is the rule to start with:

nemu_capabilities Allowed

nemu_capabilities is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "nemu_capabilities": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about nemu_capabilities

What does the nemu_capabilities tool do? +

Report native-emulator backend availability, supported features, and explicit ISA/SIMD gaps. Unsupported opcodes fail loudly instead of being reported as emulated. It is categorised as a Read tool in the Jshookmcp MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on nemu_capabilities? +

Register the Jshook MCP server in PolicyLayer and add a rule for nemu_capabilities: 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 nemu_capabilities? +

nemu_capabilities is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit nemu_capabilities? +

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

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

nemu_capabilities 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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