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add_asset_to_scene

Instantiates a specified asset from the AssetDatabase into the active Unity scene at an optional position.

Instructions

Adds an asset from the AssetDatabase to the Unity scene

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
guidNoThe GUID of the asset
parentIdNoThe instance ID of the parent GameObject
positionNoPosition in the scene (defaults to Vector3.zero)
assetPathNoThe path of the asset in the AssetDatabase
parentPathNoThe path of the parent GameObject in the hierarchy
Behavior3/5

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

Annotations indicate a write operation, and the description 'Adds' aligns. However, it omits details like side effects, failure conditions, or behavioral constraints beyond the bare action.

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?

Single sentence with 10 words, front-loaded and efficient, no fluff.

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?

With 5 parameters and no output schema, the description covers the core function but misses context on parameter relationships (e.g., guid vs assetPath) and return behavior.

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 description coverage is 100%, so baseline is 3. The description adds no additional meaning beyond the schema.

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 'Adds an asset from the AssetDatabase to the Unity scene' provides a specific verb, resource, and destination, clearly differentiating it from sibling tools like load_scene or manage_asset.

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 guidance on when to use this tool versus alternatives (e.g., create_prefab, prefab) or prerequisites (e.g., asset must exist in AssetDatabase).

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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