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scene_load

Destructive

Load a .tbscene file into Marmoset Toolbag, replacing the current scene without prompting; save large scenes first because unsaved changes are lost.

Instructions

Load a .tbscene file. Unsaved changes in the current scene are lost without a prompt; save a large scene first (Toolbag 5.0.2 has crashed tearing big bake scenes down).

Input Schema

NameRequiredDescriptionDefault
pathYes
download_missing_library_assetsNo

Output Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

A3.9/5.0
Behavior5/5

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

Goes well beyond the destructiveHint=true annotation by spelling out the exact failure mode: current scene changes are lost with no confirmation prompt. It also flags a version-specific crash risk when tearing down large bake scenes, which is information an agent cannot get from any structured field.

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?

Two tight sentences, front-loaded with the action and immediately following with the consequence. Nothing is padding; the parenthetical adds real risk information rather than noise.

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?

The destructive-behavior side is thoroughly covered, and the output schema means return values need no explanation. The gap is the undocumented `download_missing_library_assets` flag, which matters when loading a scene whose library assets are absent.

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

Parameters2/5

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

Schema coverage is 0%, so the description must carry both parameters, but it only implies that `path` points at a .tbscene file and says nothing about `download_missing_library_assets`. An agent reading only the description would not know that missing library assets can be fetched automatically.

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

Purpose4/5

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

States a concrete verb and resource ("Load a .tbscene file"), which is unambiguous against siblings like scene_save and scene_new. It doesn't explicitly say how it differs from scene_import_model, but the file-format specificity does most of that work.

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

Usage Guidelines4/5

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

Gives a clear precondition (save first, because unsaved work is discarded without a prompt) and a situational warning for large bake scenes. It stops short of naming scene_save as the alternative action, so the routing is implied rather than explicit.

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