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frrazer

roblox-devproducts-mcp

by frrazer

bulk_create_developer_products

Creates multiple Roblox developer products for a universe in a single call, with automatic rate limiting and per-item error handling so one failure doesn't stop the rest.

Instructions

Create many developer products in one call. Use this instead of calling create_developer_product repeatedly. Items are created sequentially with automatic rate limiting (the API allows 3 writes/second). Returns a summary plus a per-item result (created 'id' or error); one failing item does not stop the rest.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
itemsYesThe developer products to create.
universeIdYesThe Roblox universe (game) ID.
Behavior4/5

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

With no annotations provided, the description carries full behavioral disclosure burden. It discloses sequential creation, automatic rate limiting, and the partial failure behavior ('one failing item does not stop the rest'). It could add details about required permissions or whether the operation is atomic, but the existing disclosure is strong.

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 paragraph of three sentences, front-loading the key action and immediately providing the use-case alternative. Every sentence adds distinct value: purpose, usage guidance, and behavioral details. No wasted words.

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?

Given the tool has 2 parameters, no output schema, and no annotations, the description covers the core functionality well. It explains input behavior (what happens to items), return structure, and partial failure semantics. It could mention what happens to the rest of the items on a failure (are they aborted or continue?) or specify the exact return type, but overall it's complete for the complexity level.

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

Parameters4/5

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

Schema description coverage is 100%, so baseline is 3. The description adds value by explaining the overall behavior (sequential, rate limited) and return format (summary plus per-item result), which goes beyond what the schema provides. However, it doesn't elaborate on what specific constraints each parameter must satisfy beyond the schema.

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 purpose: creating many developer products in one call. It specifies the action ('create'), the resource ('developer products'), and distinguishes itself from the sibling tool 'create_developer_product' by emphasizing the bulk operation.

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

Usage Guidelines5/5

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

The description explicitly says to use this instead of calling create_developer_product repeatedly, which provides clear guidance. It also mentions automatic rate limiting (3 writes/second), implying when this batch tool is appropriate for efficiency.

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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