three.ws Blender

io.github.nirholas/blender-mcp

Drive a local Blender headlessly: inspect, convert, render and script 3D files.

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Connect this server

Add this to your MCP client config — claude_desktop_config.json (Claude Desktop) or .cursor/mcp.json (Cursor).Suits: Claude Desktop · Cursor.

{
  "mcpServers": {
    "blender-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@three-ws/blender-mcp@0.5.0"
      ],
      "env": {
        "BLENDER_MCP_TIMEOUT_MS": "300000",
        "BLENDER_MCP_ALLOW_PYTHON": "1",
        "BLENDER_MCP_INLINE_IMAGE_BYTES": "1500000",
        "BLENDER_MCP_INLINE_IMAGE_PX": "768",
        "BLENDER_MCP_MAX_CONCURRENCY": "2",
        "THREE_WS_BASE": "https://three.ws",
        "THREE_WS_FORGE_TIMEOUT_MS": "600000",
        "THREE_WS_FORGE_PROVIDER_KEY": "<your THREE_WS_FORGE_PROVIDER_KEY>"
      }
    }
  }
}
Environment variables
  • BLENDER_MCP_TIMEOUT_MSCeiling for one Blender job in milliseconds. Renders and heavy conversions are the slow ones.
  • BLENDER_MCP_ALLOW_PYTHONSet to 0 to withdraw blender_run_python, which executes caller-supplied Python inside Blender, from the advertised tool list.
  • BLENDER_MCP_INLINE_IMAGE_BYTESCeiling on inlined image bytes. Past this the image stays on disk and the response says where.
  • BLENDER_MCP_INLINE_IMAGE_PXLongest edge of the render copy returned inline in a tool result. The full-resolution PNG is always written to disk.
  • BLENDER_MCP_MAX_CONCURRENCYHow many Blender processes may run at once. Further calls queue rather than compete for memory.
  • THREE_WS_BASEBase URL of the three.ws deployment backing blender_forge_import.
  • THREE_WS_FORGE_TIMEOUT_MSCeiling for one text-to-3D generation in milliseconds.
  • THREE_WS_FORGE_PROVIDER_KEYsecretMeshy/Tripo API key for the bring-your-own-key geometry lane. The default image lane is free and needs no key.

A starting point — check the repository for exact arguments and setup. Restart your client after editing the config.

Category
Developer Tools
Version
0.5.0
Registry
active
Published
9/30/2026

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