renef_mem_read_u64

Reads an unsigned 64-bit integer from memory.

SERVERRenef SOURCEahmeth4n/renef-mcp

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/ahmeth4n-renef-mcp/renef-mem-read-u64.md

WHAT IT DOES

What renef_mem_read_u64 does on Renef

AI agents call renef_mem_read_u64 to retrieve information from Renef without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why renef_mem_read_u64 is rated Low

This tool performs a read-only operation on memory without creating, modifying, or deleting data. However, severity is elevated from 'low' to 'medium' because reading arbitrary memory on an Android device can expose sensitive data (cryptographic keys, tokens, PII) depending on what is in memory and an AI agent's access to memory addresses.

From the tool's definition Tool name contains 'read' and description states 'Reads an unsigned 64-bit integer from memory' — a data retrieval operation with no modification or side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs renef_mem_read_u64 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_mem_read_u64, this is the rule to start with:

renef_mem_read_u64 Allowed

renef_mem_read_u64 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": {
    "renef_mem_read_u64": {}
  }
}

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

The button opens the PolicyLayer dashboard: create your workspace, connect Renef, apply this rule, and every renef_mem_read_u64 call is checked against it from then on.

FAQ

Questions about renef_mem_read_u64

What does the renef_mem_read_u64 tool do? +

Reads an unsigned 64-bit integer from memory. It is categorised as a Read tool in the Renef MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on renef_mem_read_u64? +

Register the Renef MCP server in PolicyLayer and add a rule for renef_mem_read_u64: 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_mem_read_u64? +

renef_mem_read_u64 is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit renef_mem_read_u64? +

Yes. Add a rate_limit block to the renef_mem_read_u64 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_mem_read_u64 completely? +

Set action: deny in the PolicyLayer policy for renef_mem_read_u64. 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_mem_read_u64? +

renef_mem_read_u64 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.

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