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SekaiNoOwari77

mcp-3d-modeling-agent

blender_object_list

Retrieve a complete list of objects in the Blender scene. Use the type filter to narrow results to meshes, lights, cameras, and more for efficient scene inspection.

Instructions

List all objects in the scene

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
type_filterNoFilter by object type

Schema Changelog

Changes observed during successful MCP inspections. Dates show when Glama detected each change.

  1. First observedv0.4.0

TDQS

A3.7/5.0
Behavior3/5

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

With no annotations provided, the description carries the full behavioral disclosure burden. It clearly indicates a read-only enumeration of all objects in the scene, but it does not state the return format, whether hidden objects are included, or how the type_filter parameter affects results. This is adequate but minimal.

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 a single sentence with no filler. It front-loads the action and resource, and is appropriately sized for a simple list tool.

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?

For a one-parameter list tool, this is nearly sufficient, but there is no output schema and the description does not specify what each listed object contains (e.g., name, ID, type). The optional type_filter is also only discoverable through the schema, not the description.

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 schema covers the only parameter (type_filter) completely with an enum and a description, so the baseline of 3 applies. The description adds no parameter-level meaning beyond what the schema already provides.

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 uses a specific verb ('List') and resource ('objects in the scene'), and its scope is clear. It is distinguishable from siblings like blender_object_get and blender_scene_info, even though those alternatives are not named.

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 implies when to use the tool: whenever you need to enumerate objects in the current scene. However, it provides no explicit guidance about when to prefer a sibling like blender_object_get for a single object or blender_collection_list for collections, so the routing burden is left to the agent.

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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