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wp_load_region

Loads a World Partition region in Unreal Editor by specifying center and extent, making the area available for editing.

Instructions

Load a World Partition editor region by bounding box.

KB: see knowledge_base/25_WORLD_PARTITION_AND_HLOD.md#mcp-world-partition-and-hlod-tools Example: wp_load_region(center=[0, 0, 0], extent=[50000, 50000, 50000], label="Downtown Edit Window")

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
labelNoMCP Loaded Region
centerNo
extentNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

B3.3/5.0
Behavior2/5

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

With no annotations provided, the description must carry the full behavioral burden. It only states what the tool does without disclosing side effects (e.g., whether it unloads other regions, affects streaming, or requires a specific editor state), potential performance implications, or return behavior. The description is too sparse to inform an agent about the operational impact.

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 concise, leading with the purpose, then a KB reference and a clear example. It is well-structured and front-loaded, with no wasted words. The example is helpful but could be improved by including parameter explanations.

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

Completeness3/5

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

For a simple load operation, the description is reasonably complete given the example and KB reference, but it omits important context: units, coordinate system, potential side effects, and return values (though an output schema exists). Since there are no annotations, the description should provide more behavioral context to be fully complete.

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?

The schema has 0% description coverage, so the description must compensate. It only shows an example with center, extent, and label values but does not explain their meaning (units, coordinate system, whether extent is half-extent or full, or label usage). The example provides minimal inferential value but leaves critical semantics undefined.

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 states a specific verb and resource: 'Load a World Partition editor region by bounding box.' This clearly distinguishes it from sibling tools like wp_unload_region (which unloads) and wp_create_data_layer (which creates data layers). The example reinforces the intended action.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies usage (load a region for editing) and provides an example, but it does not explicitly state when to use this tool versus alternatives like wp_unload_region or when to avoid it. There is no mention of prerequisites or conditions, only a KB reference that may contain more context but is not directly in the 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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