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sam-david

unreal-mcp

by sam-david

compile_blueprint

Compile a Blueprint by providing its asset path to ensure it builds without errors.

Instructions

Compile a Blueprint.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
blueprint_pathYesBlueprint asset path
Behavior1/5

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It merely states 'Compile a Blueprint' without revealing side effects, whether it saves/overwrites, what happens on compilation errors, or any required setup. This is too vague to inform an agent about potential impacts or prerequisites.

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 a single, front-loaded sentence with no filler or redundancy. It is efficiently minimal, though perhaps overly terse. It earns its place but leaves significant information unsaid, preventing a perfect score.

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?

For a compilation tool with no output schema, no annotations, and only one self-explanatory parameter, the description is insufficient. It does not mention expected outcomes, compilation errors, or whether the compiled asset is saved/updated, leaving the agent without critical context for such an operation.

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 already fully covers the single parameter 'blueprint_path' with a clear description ('Blueprint asset path'). The tool description adds no additional semantic detail about the parameter, but since schema coverage is 100%, the baseline of 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose3/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states a specific verb ('Compile') and resource ('Blueprint'), making the basic action clear. However, it lacks detail on what compiling entails and does not differentiate from related sibling tools like create_blueprint or get_blueprint_info beyond the verb itself. It is a minimal, generic statement rather than a fully clarifying one.

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?

There is no guidance on when to use this tool versus alternatives such as build_target, create_blueprint, or recompile_material. No prerequisites, expected usage context, or exclusions are provided. The description is purely a one-line action statement with no usage direction.

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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