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aadeshrao123

Unreal-MCP

by aadeshrao123

apply_and_save_niagara_scratch_pad

Apply and save Niagara scratch pad module changes to the system asset, mirroring the editor's Apply & Save button.

Instructions

Apply a scratch pad module's edit-copy AND save the asset (Apply & Save button).

Mirrors FNiagaraScratchPadScriptViewModel::ApplyChangesAndSave.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
module_nameYes
system_pathYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior2/5

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

With no annotations provided, the description carries the full burden. It indicates a write/mutation operation (apply and save) but does not disclose potential side effects, permissions required, or whether the action is reversible. The brief mention of mirroring an internal method adds little practical behavioral context.

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 short and front-loaded with the main action. The second sentence adds technical reference. While every sentence earns its place, the structure could be improved by ordering information more logically.

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

Completeness2/5

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

Given the lack of annotations and incomplete parameter descriptions, the description does not provide sufficient context for a mutation tool. The existence of an output schema helps with return values, but the description still fails to cover error conditions, preconditions, or success criteria.

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

Parameters1/5

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

Schema description coverage is 0%, and the description does not explain any parameters. It only references 'system_path' and 'module_name' in the schema, but the description itself adds no meaning, leaving the agent with no understanding of what these parameters represent or how to use them.

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 the tool applies a scratch pad module's edit-copy and saves the asset, referencing the 'Apply & Save' button and a specific method. This distinguishes it from similar tools like 'apply_niagara_scratch_pad' by emphasizing the save action. However, the term 'edit-copy' is somewhat vague.

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 such as 'apply_niagara_scratch_pad' (which may not save). There is no mention of prerequisites, context, or exclusions, leaving the agent without decision support.

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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