BlenderMCP

Instructions

Implementation Reference

• src/blender_mcp/server.py:559-575 (handler)

  The handler function decorated with @mcp.tool(), which registers and implements the get_sketchfab_status tool. It connects to the Blender addon, sends a 'get_sketchfab_status' command, and returns the formatted 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)}"
• src/blender_mcp/server.py:559-559 (registration)

  The @mcp.tool() decorator registers the get_sketchfab_status function as an MCP tool.
  @mcp.tool()
• src/blender_mcp/server.py:887-938 (helper)

  Documentation in the asset_creation_strategy prompt that references and explains usage of get_sketchfab_status.
  2. Sketchfab 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 3. Hyper3D(Rodin) Hyper3D Rodin is good at generating 3D models for single item. So don't try to: 1. Generate the whole scene with one shot 2. Generate ground using Hyper3D 3. Generate parts of the items separately and put them together afterwards Use get_hyper3d_status() to verify its status If Hyper3D is enabled: - For objects/models, do the following steps: 1. Create the model generation task - Use generate_hyper3d_model_via_images() if image(s) is/are given - Use generate_hyper3d_model_via_text() if generating 3D asset using text prompt If key type is free_trial and insufficient balance error returned, tell the user that the free trial key can only generated limited models everyday, they can choose to: - Wait for another day and try again - Go to hyper3d.ai to find out how to get their own API key - Go to fal.ai to get their own private API key 2. Poll the status - Use poll_rodin_job_status() to check if the generation task has completed or failed 3. Import the asset - Use import_generated_asset() to import the generated GLB model the asset 4. After importing the asset, ALWAYS check the world_bounding_box of the imported mesh, and adjust the mesh's location and size Adjust the imported mesh's location, scale, rotation, so that the mesh is on the right spot. You can reuse assets previous generated by running python code to duplicate the object, without creating another generation task. 3. Always check the world_bounding_box for each item so that: - Ensure that all objects that should not be clipping are not clipping. - Items have right spatial relationship. 4. Recommended asset source priority: - For specific existing objects: First try Sketchfab, then PolyHaven - For generic objects/furniture: First try PolyHaven, then Sketchfab - For custom or unique items not available in libraries: Use Hyper3D Rodin - For environment lighting: Use PolyHaven HDRIs - For materials/textures: Use PolyHaven textures Only fall back to scripting when: - PolyHaven, Sketchfab, and Hyper3D are all disabled - A simple primitive is explicitly requested - No suitable asset exists in any of the libraries - Hyper3D Rodin failed to generate the desired asset - The task specifically requires a basic material/color """