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Blender Copilot MCP Server

by dwgx

sculpt_smooth_groups

Apply targeted smoothing to sculpted meshes using mask, boundary, or curvature based operations. Preserve volume with adjustable iterations and strength.

Instructions

Targeted smoothing operations for sculpted meshes.

action: 'smooth_by_mask' — Smooth only masked region 'smooth_boundary' — Smooth only mesh boundaries/seams 'smooth_high_curvature' — Smooth only high-curvature areas 'laplacian_smooth' — Volume-preserving Laplacian smooth (whole mesh) 'relax_topology' — Equalize edge lengths without changing shape

iterations: Number of smooth passes. factor: Smooth strength per pass (0.0-1.0). preserve_volume: Scale mesh back to original volume after smoothing.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
actionNosmooth_by_mask
factorNo
mesh_nameYes
iterationsNo
preserve_volumeNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries full burden. It explains the effect of each action and parameters like iterations and preserve_volume, but does not cover side effects or performance implications.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is structured with clear bullet points for actions and parameter list. It is relatively concise with minimal redundancy.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given 5 parameters and an output schema, the description covers actions adequately but lacks prerequisites, mesh compatibility details, or error scenarios.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The description semantically explains the 'action' parameter with detailed sub-options, but other parameters like mesh_name, iterations, factor, and preserve_volume are only listed without additional meaning beyond schema defaults.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states it's for 'targeted smoothing operations for sculpted meshes' and lists specific actions like smooth_by_mask and smooth_boundary, which distinguishes it from other sculpt tools.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description explains what each action does but does not explicitly state when to use this tool versus alternatives like sculpt_brush_stroke or other smoothing tools. Context is implied but not directly guided.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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