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aadeshrao123

Unreal-MCP

by aadeshrao123

add_event_node

Add event nodes like ReceiveBeginPlay to Unreal Engine blueprints for defining event-driven behaviors.

Instructions

Add an event node (ReceiveBeginPlay, ReceiveTick, ReceiveDestroyed, etc.).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
pos_xNo
pos_yNo
event_nameYes
blueprint_nameYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior2/5

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

No annotations exist, so description carries full burden. Only says 'Add an event node', omitting side effects (e.g., blueprint modification, compilation requirements). Lacks detail on mutation scope.

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?

Single sentence with examples, no fluff. Brief but includes essential purpose and sample values. Could list more event types.

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?

With no annotations, 0% parameter descriptions, and an output schema not described, the tool is under-documented. Missing return value info, prerequisites, and detailed behavior.

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

Parameters2/5

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

Schema has 0% description coverage. Description only clarifies event_name via examples. No explanation for pos_x, pos_y (position) or blueprint_name, leaving these parameters unclear.

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?

Clearly states it adds an event node with specific examples (ReceiveBeginPlay, etc.). Distinguishes from general node addition tools like add_blueprint_node, though not explicitly.

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?

Provides no guidance on when to use this tool versus alternatives such as add_blueprint_node. No when-not or context provided.

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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