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0xhackerfren

Frida Game Hacking MCP

by 0xhackerfren

detach

Disconnect from the current game process to stop monitoring or modifying memory, values, or functions during reverse engineering.

Instructions

Detach from the current process.

Returns:
    Detach status.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes

Implementation Reference

  • The main handler function for the 'detach' tool. Detaches the Frida session from the currently attached process, unloads all active hooks and custom scripts, resets the global session state, and returns the status.
    @mcp.tool()
    def detach() -> Dict[str, Any]:
        """
        Detach from the current process.
        
        Returns:
            Detach status.
        """
        global _session
        
        if not _session.is_attached():
            return {"message": "No active session"}
        
        try:
            for hook_info in _session.hooks.values():
                try:
                    hook_info.script.unload()
                except:
                    pass
            
            for script in _session.custom_scripts.values():
                try:
                    script.unload()
                except:
                    pass
            
            _session.session.detach()
            old_name = _session.process_name
            _session.reset()
            
            return {"success": True, "message": f"Detached from {old_name}"}
        
        except Exception as e:
            _session.reset()
            return {"error": f"Error during detach: {str(e)}"}
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries full burden. It mentions 'Returns: Detach status' but doesn't disclose behavioral traits like whether this stops debugging, releases memory, requires specific permissions, or has side effects. For a tool with potential system impact, this is a significant gap in transparency.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is brief and front-loaded with the main action, followed by a returns statement. It's efficient with two sentences, though the returns line could be more informative. No wasted words, but slightly under-specified.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given 0 parameters and an output schema exists (which should detail return values), the description is minimally adequate. However, for a tool that likely interacts with processes (implied by sibling 'attach'), more context on effects and usage would improve completeness, especially without annotations.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has 0 parameters with 100% coverage, so no parameter documentation is needed. The description doesn't add param info, but that's acceptable here. Baseline is 4 for zero parameters, as it avoids unnecessary detail.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose3/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states 'Detach from the current process' which provides a clear verb ('detach') and resource ('current process'), but it's somewhat vague about what 'detach' entails operationally. It doesn't distinguish from sibling tools like 'resume' or 'unhook_function' which might have related functionality in debugging contexts.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is provided on when to use this tool versus alternatives. Given sibling tools like 'resume' (which might continue execution) or 'attach' (which might connect to a process), the description lacks context about when detaching is appropriate, such as after debugging or to release resources.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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