Ask HN: Examples of LLMs building with primitives MCP?

I saw several posts of Claude wired up to Blender via MCP and making these impressive models.

Here was one repo https://github.com/ahujasid/blender-mcp

I was thinking, or more hoping the LLM was actually providing instructions via primitives to make the 3d models. But digging into the code, it seems they are just calling text to 3d model LLMs under the hood.

Has anyone seen any examples where the LLM is using primitives via MCP to make something truly impressive?