# hook_native_function

A execute tool on the Frida Game Hacking MCP MCP server.

Agent View of the PolicyLayer registry record for `hook_native_function`. HTML page: https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/hook-native-function

## Facts

- Tool: `hook_native_function`
- Server: Frida Game Hacking MCP (`0xhackerfren/frida-game-hacking-mcp`) — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp.md
- Homepage: https://github.com/0xhackerfren/frida-game-hacking-mcp
- Risk category: Execute (High risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "hook_native_function",
    "arguments": {}
  }
}
```

## Why hook_native_function is rated High

Function hooking involves intercepting and modifying the execution of native functions in running processes. This is an Execute-category action with critical severity because it allows arbitrary code injection and behavioral modification of external processes, which could be misused to manipulate any application, not just games.

From the tool's own definition: "Tool name 'hook_native_function' on a server described as enabling 'function hooking, and code injection across processes'"

## Use case

AI agents invoke hook_native_function to trigger actions in Frida Game Hacking MCP. 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.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Frida Game Hacking MCP:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "hook_native_function": {
      "limits": [
        {
          "counter": "hook_native_function_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Frida Game Hacking MCP (41)

- `clear_scan` — Destructive — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/clear-scan.md
- `attach` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/attach.md
- `call_rpc` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/call-rpc.md
- `detach` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/detach.md
- `focus_window` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/focus-window.md
- `hook_function` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/hook-function.md
- `intercept_module_function` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/intercept-module-function.md
- `load_script` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/load-script.md
- `remove_breakpoint` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/remove-breakpoint.md
- `replace_function` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/replace-function.md
- `resume` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/resume.md
- `send_key_to_window` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/send-key-to-window.md
- `set_breakpoint` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/set-breakpoint.md
- `spawn` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/spawn.md
- `unload_script` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/unload-script.md
- `check_installation` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/check-installation.md
- `get_documentation` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/get-documentation.md
- `get_module_exports` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/get-module-exports.md
- `get_module_imports` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/get-module-imports.md
- `get_module_info` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/get-module-info.md
- `get_scan_results` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/get-scan-results.md
- `get_session_info` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/get-session-info.md
- `list_breakpoints` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/list-breakpoints.md
- `list_capabilities` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/list-capabilities.md
- `list_hooks` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/list-hooks.md
- `list_memory_regions` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/list-memory-regions.md
- `list_modules` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/list-modules.md
- `list_processes` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/list-processes.md
- `list_windows` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/list-windows.md
- `read_memory` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/read-memory.md
- …and 11 more: https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=0xhackerfren-frida-game-hacking-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/0xhackerfren-frida-game-hacking-mcp