I got tired of the alt-tab loop. Write a Blender script. Hit an error. Switch to a browser. Paste the traceback to Claude. Copy the fix back. Re-run. Repeat.

So I built Claude Code for Blender , an extension that puts Claude in the Text Editor's sidebar with the active script as automatic context, scene-aware tools, and the ability to actually run the Python it generates. Here's what I learned building it.

The shape of the thing

The extension is pure Python — no native dependencies, no build step. About 5,200 lines across 12 files, packaged as a Blender 4.2+ extension manifest.…