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sam-david

unreal-mcp

by sam-david

get_blueprint_info

Retrieve a Blueprint's class, variables, functions, components, and graphs from Unreal Engine to understand its structure and behavior.

Instructions

Get Blueprint info: class, variables, functions, components, and graphs.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
blueprint_pathYesBlueprint asset path
Behavior2/5

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

No annotations are present, so the description carries the full burden. It states what info is retrieved but does not disclose that the operation is read-only, whether any errors are possible, or what happens if the blueprint_path is invalid. Even though 'Get' implies a query, the description lacks explicit 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.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, focused sentence that front-loads the core purpose and lists the included info categories. No redundant or filler content exists.

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?

There is no output schema, so the description must convey return value expectations. It lists five key categories (class, variables, functions, components, graphs), which gives a reasonable sense of the response content. However, it does not specify the format or nesting, which keeps it just short of complete.

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

Parameters3/5

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

The input schema fully documents the only parameter, blueprint_path, with its description 'Blueprint asset path'. The description adds no additional meaning beyond the schema, so the baseline of 3 applies.

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 action ('Get') and the resource ('Blueprint info'), and enumerates the specific categories of information included (class, variables, functions, components, graphs). This distinguishes it from sibling tools like get_asset_info or get_actor_properties, which target different resources.

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 is provided on when to use this tool versus alternatives. It does not mention contexts such as inspecting a Blueprint before editing, nor does it exclude cases like non-Blueprint assets. The agent must infer usage from the name and description.

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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