nemu_read_memory

Read raw bytes from guest memory at a given address. Returns a bounded preview by default; set includeDataBase64=true for full base64 within the configured cap.

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-read-memory.md

WHAT IT DOES

What nemu_read_memory does on Jshookmcp

AI agents call nemu_read_memory 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_read_memory is rated Low

Directly accesses and exfiltrates arbitrary memory contents, enabling sensitive data extraction from emulator process.

From the tool's definition Read raw bytes from guest memory at a given address

Attacks that exploit this kind of access

RECOMMENDED RULE

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

nemu_read_memory Allowed

nemu_read_memory 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_read_memory": {}
  }
}

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_read_memory call is checked against it from then on.

FAQ

Questions about nemu_read_memory

What does the nemu_read_memory tool do? +

Read raw bytes from guest memory at a given address. Returns a bounded preview by default; set includeDataBase64=true for full base64 within the configured cap. 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_read_memory? +

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

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

Can I rate-limit nemu_read_memory? +

Yes. Add a rate_limit block to the nemu_read_memory 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_read_memory completely? +

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

nemu_read_memory 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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