renef_hook_native
Installs a native hook at the specified offset in a library.
This record as markdown: /tools/ahmeth4n-renef-mcp/renef-hook-native.md
What renef_hook_native does on Renef
AI agents invoke renef_hook_native to trigger actions in Renef. 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.
Why renef_hook_native is rated High
Installing a native hook modifies runtime execution flow of a process by intercepting native ARM64 function calls. This is an active code instrumentation operation that affects how the target application executes. It is not a simple read or write, but an Execute-category operation because it alters program behavior and triggers external operations depending on arguments.
From the tool's definition "Installs a native hook at the specified offset in a library" — dynamically instruments native code execution by intercepting function calls at a memory offset
Attacks that exploit this kind of access
The rule that runs renef_hook_native 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_hook_native, this is the rule to start with:
renef_hook_native 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.
The button opens the PolicyLayer dashboard: create your workspace, connect Renef, apply this rule, and every renef_hook_native call is checked against it from then on.
Questions about renef_hook_native
Installs a native hook at the specified offset in a library. It is categorised as a Execute tool in the Renef MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Renef MCP server in PolicyLayer and add a rule for renef_hook_native: 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.
renef_hook_native is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the renef_hook_native 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.
Set action: deny in the PolicyLayer policy for renef_hook_native. 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.
renef_hook_native 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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