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Drive Blender via the catalog blender MCP, with bpy recipes.
Passed 7 of 13 test cases with the skill, and 5 of 13 without it.
and 5 more in the full report
6 fixed6 passed either way8 still failing2 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 6 test cases the skill fixed. Same model, same prompt, with and without the skill.
I am in a Hermes session but none of the Blender tools like `get_scene_info` are available. What exact CLI command should I run to fix this?
| Checked | Without skill | With skill |
|---|---|---|
| Instructs the user to run hermes mcp install blender. | Missed | Passed |
The instructions your model reads when the skill loads.
Companion skill for the blender entry in the Hermes MCP catalog. The MCP
server provides the connection to Blender; this skill teaches the bpy idioms
and pitfalls for driving it well. It does not cover Blender UI workflows —
everything here goes through the MCP tools against a live Blender session.
Use when the user wants to create or modify anything in a running Blender instance: meshes, materials, animations, lighting, renders. Requires the blender MCP server installed and a Blender desktop session with the addon connected.
Install the MCP server from the Nous catalog (one-time):
hermes mcp install blender
This configures the pinned blender-mcp stdio server with the curated
tool set: get_scene_info, get_object_info, get_viewport_screenshot,
execute_blender_code.
Install the addon inside Blender (one-time — the catalog entry's post-install notes cover this too):
Every session: start Blender FIRST, press N in the viewport, open the "BlenderMCP" tab, click "Connect to Claude" (starts the local bridge socket). Then start your Hermes session so the MCP tools are loaded.
The addon refuses to start under blender -b (background mode). On a
machine without a display, run Blender under a virtual one:
xvfb-run blender. GPU rendering works fine under Xvfb.
test cases passed, vs 5 / 13 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.