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aadeshrao123

Unreal-MCP

by aadeshrao123

add_function_input

Adds an input parameter to a Blueprint function, specifying name, type, and array option.

Instructions

Add an input parameter to a Blueprint function.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
is_arrayNo
param_nameYes
param_typeYes
function_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 provided, so description must carry full burden. It only states the action without disclosing side effects, required permissions, whether the blueprint needs to be compiled or saved, or what happens if inputs are invalid.

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?

Single sentence with no unnecessary words. Efficiently conveys the core action.

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 tool's complexity (5 params, required fields) and presence of an output schema, the description lacks details about return values, required preconditions, or integration with other blueprint tools. Incomplete for an AI agent to use reliably.

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 description coverage is 0%, yet description adds no explanation for parameters like param_type (allowed values) or is_array (effect on the parameter). The param names are somewhat self-explanatory but insufficient for correct invocation.

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?

Description clearly states the action (add), the object (input parameter), and the context (Blueprint function). It distinguishes from sibling tools like add_function_output and delete_blueprint_function.

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 versus alternatives like add_function_output or compile_blueprint. No prerequisites or conditions mentioned, which is needed given the many sibling tools.

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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