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aadeshrao123

Unreal-MCP

by aadeshrao123

set_asset_property

Set a property on an Unreal Engine asset by specifying the property name and its JSON-encoded value.

Instructions

Set a property on an asset.

Args: property_name: Property name (e.g. "two_sided", "blend_mode") property_value: JSON-encoded value (e.g. "true", "0.5", '"translucent"')

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
asset_pathYes
property_nameYes
property_valueYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior2/5

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

No annotations provided, so description must disclose behavior. It only says 'Set a property', omitting side effects, permissions, or result details.

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?

Description is brief and front-loaded with examples, no unnecessary text.

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?

Covers the basic operation but lacks asset_path explanation and usage context. Output schema exists but not described.

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?

Explains property_name and property_value with examples, adding value over schema. However, asset_path is undocumented, and schema coverage is 0%.

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?

The description clearly states it sets a property on an asset, with examples. It distinguishes from get_asset_properties, but does not explicitly differentiate from other set_* tools.

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 vs alternatives like set_actor_property. Agent must infer from the name.

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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