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Blender Copilot MCP Server

by dwgx

modifier_reorder

Move a modifier to any position in the modifier stack to change the order of effects on an object.

Instructions

Move a modifier to a specific position in the stack.

Args: object_name: Target object modifier_name: Modifier to move position: Target position (0 = top of stack)

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
positionYes
object_nameYes
modifier_nameYes
Behavior2/5

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

With no annotations, the description carries full behavioral disclosure burden. It only describes the basic action but does not disclose error handling, side effects (e.g., what if modifier doesn't exist or position is invalid), or any other behavioral traits.

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

Conciseness5/5

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

The description is extremely concise: two lines of purpose plus a parameter list. Every sentence is necessary, and the key information is front-loaded. No waste.

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

Completeness2/5

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

Given the tool complexity (reordering modifiers with stack semantics), no output schema, and no annotations, the description is incomplete. It does not cover return values, error conditions, or prerequisites (e.g., the object must have the modifier).

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?

Schema coverage is 0%, but the description adds meaning for 'position' (0 = top of stack). However, the other two parameters have no additional semantics beyond their names. This partially compensates for the schema's lack, but not fully.

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 the verb 'move', the resource 'modifier', and the context 'stack position'. It directly conveys the tool's function and distinguishes it from siblings like modifier_add, modifier_remove, and modifier_list.

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

Usage Guidelines2/5

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

No usage guidelines are provided. The description does not specify when to use this tool versus alternatives, nor does it mention prerequisites or when not to use it.

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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