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aadeshrao123

Unreal-MCP

by aadeshrao123

create_niagara_scratch_pad_module

Create a new Niagara scratch pad module with a pre-wired graph by duplicating the editor's default template, ready for custom logic.

Instructions

Create a new scratch pad script on a Niagara System.

Duplicates the editor's default template (DefaultModuleScript / DefaultDynamicInputScript / DefaultFunctionScript from NiagaraEditorSettings) so the resulting graph is pre-wired with Input / MapGet / MapSet / Output just like clicking "Create New Module" in the Scratch Script Manager. Falls back to a manually-built minimal graph if the template asset is unavailable.

Args: system_path: Niagara System asset path module_name: Desired scratch script name (unique within the system's ScratchPadScripts) module_type: "module" (default), "dynamic_input", or "function"

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
module_nameNoScratchPadModule
module_typeNomodule
system_pathYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior4/5

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

With no annotations provided, the description carries the full burden. It explains the template duplication process, fallback to minimal graph, and the resulting graph structure (Input/MapGet/MapSet/Output). Missing return value details, but the behavioral insight is strong.

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 front-loaded with the purpose, followed by a concise behavioral paragraph and a clear Args list. Every sentence adds value without unnecessary verbosity.

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?

Despite lacking output schema documentation and not explicitly stating constraints like uniqueness or error conditions, the description covers the main workflow, template handling, and parameter details. For a tool with moderate complexity and many siblings, it is nearly complete.

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?

The schema has 0% description coverage, so the description's Args section fully compensates: it explains system_path as 'Niagara System asset path', module_name as 'Desired scratch script name (unique within the system's ScratchPadScripts)', and module_type with its three enumerated values and default.

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 first line clearly states 'Create a new scratch pad script on a Niagara System.' This specific verb+resource combination, along with the detailed explanation of template duplication and fallback behavior, strongly distinguishes it from sibling tools like duplicate, delete, or rename.

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 usage by explaining it creates from a template, but it does not explicitly contrast with siblings like duplicate_niagara_scratch_pad_module. An explicit 'when to use vs alternatives' statement is missing.

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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