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aadeshrao123

Unreal-MCP

by aadeshrao123

get_niagara_emitter_attributes

Retrieve attributes (name, type, scope, source) from a Niagara emitter, with optional name filter for specific attributes like Color or Velocity.

Instructions

Get attributes defined on an emitter at a given scope.

Returns name, type, scope, and source per attribute. Includes both rapid iteration parameters and well-known particle attributes (Position, Velocity, Color, etc.). Use filter to narrow by attribute name substring.

Args: system_path: Path to the Niagara System asset emitter_name: Name of the target emitter scope: Attribute scope — "particle", "emitter", "system", "all" filter: Optional name filter (e.g. "Color", "Position", "Velocity", "Size")

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
scopeNoparticle
filterNo
system_pathYes
emitter_nameYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior3/5

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

No annotations provided, so the description carries full burden. It describes the return output but does not disclose side effects, permissions, or whether the operation is read-only. However, as a 'get' operation, it is implicitly non-destructive, but this is not explicitly stated.

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?

The description is efficiently structured with a clear main sentence followed by a bullet list of parameters. Each sentence adds value, though the parameter list could be slightly shorter if schema descriptions were used. Still, it is concise for the information provided.

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

Completeness4/5

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

Given the presence of an output schema and the tool's straightforward nature (read operation, 4 params, no nested objects), the description covers the essential aspects. It lists return fields and includes filter usage. Minor omissions like error handling are acceptable given the output schema.

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

Parameters5/5

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

Despite 0% schema description coverage, the description provides thorough parameter documentation: system_path and emitter_name paths, scope valid values ('particle', 'emitter', 'system', 'all'), and filter examples like 'Color' or 'Velocity'. This fully compensates for the schema gap.

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 tool's purpose: 'Get attributes defined on an emitter at a given scope.' It specifies the return fields (name, type, scope, source) and distinguishes from sibling tools like list_niagara_emitters or get_niagara_system_info by focusing on emitter attributes.

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?

The description provides no guidance on when to use this tool versus alternatives. It mentions filtering but does not explain when to use filters or contrast with other Niagara attribute tools. There is no 'when not to use' or prerequisite information.

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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