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Simon Willison drove Blender from a coding agent on macOS and rendered a 3D pelican for $4.24 in Astra tokens
Posted 2026-09-05, this is a working recipe rather than a demo: install the full Blender Mac app to /Applications/Blender, tell the agent that path, and let gpt-6-astra write against Blender's Python API. The agent produced .blend files editable in Blender itself and could render stills and movies by rendering an image sequence and stitching it with ffmpeg. The whole session cost about $4.24 at API rates, though Willison ran it on a Codex subscription. The generalisable point for builders is that any application with a scripting API is now agent-drivable without an MCP server in between, and the cost of finding that out is a few dollars.
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