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ujs204

BlenderMCP

by ujs204

get_sketchfab_status

Check if Sketchfab integration is enabled in Blender to verify availability of 3D model sharing features.

Instructions

Check if Sketchfab integration is enabled in Blender. Returns a message indicating whether Sketchfab features are available.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Implementation Reference

  • The primary handler function for the 'get_sketchfab_status' tool. It uses the @mcp.tool() decorator for registration and implements the logic by sending a 'get_sketchfab_status' command to the Blender addon via socket connection, processing the response to return a status message indicating if Sketchfab integration is enabled.
    @mcp.tool()
    def get_sketchfab_status(ctx: Context) -> str:
        """
        Check if Sketchfab integration is enabled in Blender.
        Returns a message indicating whether Sketchfab features are available.
        """
        try:
            blender = get_blender_connection()
            result = blender.send_command("get_sketchfab_status")
            enabled = result.get("enabled", False)
            message = result.get("message", "")
            if enabled:
                message += "Sketchfab is good at Realistic models, and has a wider variety of models than PolyHaven."        
            return message
        except Exception as e:
            logger.error(f"Error checking Sketchfab status: {str(e)}")
            return f"Error checking Sketchfab status: {str(e)}"
  • Helper prompt in asset_creation_strategy that instructs the AI on when and how to use the get_sketchfab_status tool to check Sketchfab integration status before using related tools.
    Sketchfab is good at Realistic models, and has a wider variety of models than PolyHaven.
    Use get_sketchfab_status() to verify its status
    If Sketchfab is enabled:
    - For objects/models: First search using search_sketchfab_models() with your query
    - Then download specific models using download_sketchfab_model() with the UID
    - Note that only downloadable models can be accessed, and API key must be properly configured
    - Sketchfab has a wider variety of models than PolyHaven, especially for specific subjects
  • The @mcp.tool() decorator registers the get_sketchfab_status function as an MCP tool.
    @mcp.tool()

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

TDQS

A4/5.0
Behavior3/5

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

With no annotations, the description carries the behavioral transparency burden. It does communicate a non-mutating status check and a message return, but it does not state whether the check is local-only or queries Sketchfab, nor any side-effect or error behavior. This is adequate but not rich.

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?

Two short sentences, front-loaded with the purpose and followed by the return behavior. No filler or duplication beyond a mild redundancy between 'enabled' and 'available'.

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

Completeness4/5

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

For a zero-parameter status check with no output schema, the description covers the essential aspects: what is checked and what the caller receives. It could be more specific about the exact structure/form of the returned message, but nothing critical is missing.

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 tool has zero parameters, so there is nothing for the description to document. The schema already covers 100% of the empty parameter surface, earning the zero-parameter baseline of 4.

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 uses a specific verb ('Check') and resource ('Sketchfab integration in Blender'), and clarifies the outcome ('Returns a message indicating whether Sketchfab features are available'). It is unambiguous and distinguishable from sibling status tools for other integrations by naming the exact integration.

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

Usage Guidelines3/5

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

Usage context is implied: an agent would call this when it needs to know whether Sketchfab is available in Blender. However, there is no explicit guidance about when not to use it, nor any comparison with sibling status tools like get_hyper3d_status or get_polyhaven_status.

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