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Roblox Studio MCP Server

mass_create_objects

Create multiple Roblox objects in one batch by specifying className and parent path, with optional names. Efficiently populate scenes and hierarchies.

Instructions

Create multiple objects at once (basic, without properties)

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
objectsYesArray of objects to create
Behavior2/5

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

No annotations are provided, so the description carries the full burden for disclosing behavioral traits. However, it only states the action ('create') and the scope ('multiple', 'basic'), without revealing anything about partial failure handling, atomicity, permissions, or return value. For a mutating tool, this is a significant gap.

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, concise sentence of 10 words. Every word contributes to defining the purpose, with no redundancy or unnecessary detail.

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?

The tool is simple with one well-documented parameter, and the description covers the core action. However, without an output schema, the description should mention return values or error behavior, which it does not. This leaves the context slightly incomplete for an agent deciding how to handle results.

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 provides 100% coverage, describing the 'objects' array and its items ('className', 'parent', 'name'). The description adds the note about 'without properties', which helps clarify what the array should not contain, but it does not add substantive syntax or format details beyond what the schema already offers.

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 tool's function: 'Create multiple objects at once' with a specific qualifier 'basic, without properties'. This verb-resource pair is unambiguous and distinguishes it from siblings like 'create_object' or 'mass_create_objects_with_properties'.

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

Usage Guidelines4/5

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

The phrase 'basic, without properties' provides clear context that this tool is for simple bulk creation when properties are not needed. It implies an alternative exists for property creation, but it does not explicitly name that tool or state specific when-not-to-use conditions, so it stops short of full explicit guidance.

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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