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renderdoc_close_capture

Close the currently open RenderDoc capture file to release system resources and prepare for new debugging sessions.

Instructions

Close the currently open RDC capture file and release resources.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Implementation Reference

  • The MCP tool handler for renderdoc_close_capture. This function calls the wrapper's close_capture method and returns a success message.
    elif name == "renderdoc_close_capture":
        wrapper.close_capture()
        return [TextContent(type="text", text="Capture closed successfully.")]
  • Tool schema definition for renderdoc_close_capture, defining its name, description, and input schema (which requires no parameters).
    Tool(
        name="renderdoc_close_capture",
        description="Close the currently open RDC capture file and release resources.",
        inputSchema={
            "type": "object",
            "properties": {},
            "required": [],
        },
    ),
  • The actual implementation of close_capture in the RenderDocWrapper class. It shuts down the replay controller and clears the current file reference.
    def close_capture(self) -> None:
        """Close the current capture."""
        if self.controller:
            self.controller.ShutdownReplay()
            self.controller = None
        self.current_file = None
Behavior3/5

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

With no annotations provided, the description carries the full burden. It discloses that the tool releases resources, which is a key behavioral trait beyond just closing. However, it lacks details on side effects, error conditions, or confirmation of success, leaving gaps in transparency for a tool that likely involves resource management.

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

Conciseness5/5

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

The description is a single, efficient sentence that front-loads the core action ('Close the currently open RDC capture file') and adds necessary context ('and release resources'). There is zero waste, making it highly concise and well-structured for quick understanding.

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 the tool's simplicity (0 parameters, no output schema, no annotations), the description is adequate but minimal. It covers the basic purpose and resource release, yet lacks information on what happens after closing (e.g., state changes, error handling), which could be useful for an agent in a workflow with sibling tools like 'renderdoc_open_capture'.

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 appropriately does not discuss parameters, focusing on the tool's action. A baseline of 4 is applied as it effectively handles the lack of parameters without unnecessary detail.

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

Purpose5/5

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

The description clearly states the specific action ('Close') and resource ('currently open RDC capture file'), distinguishing it from sibling tools like 'renderdoc_open_capture' and 'renderdoc_analyze_draw_call'. It precisely defines what the tool does without being vague or tautological.

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

Usage Guidelines4/5

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

The description implies usage context by specifying 'currently open RDC capture file', suggesting it should be used when a capture is open. However, it does not explicitly state when not to use it or name alternatives, such as whether it's required before opening another capture or if other tools can be used while a capture is open.

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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