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whats2000

Isaac Sim MCP Server

by whats2000

search_usd

Search the NVIDIA USD asset library with a text description and load the best-matching 3D asset, placing it at a specified position and scale.

Instructions

Search the NVIDIA USD asset library by text description, then load the best match.

Args: text_prompt: Text description of the 3D asset to search for. target_path: Prim path for the loaded result. position: [x, y, z] world position. scale: [sx, sy, sz] scale factors.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
text_promptYes
target_pathNo/World/my_usd
positionNo
scaleNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior2/5

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

No annotations provided. Description lacks behavioral details such as side effects, whether the asset is fully loaded or referenced, or any prerequisites.

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?

Concise: one-line purpose followed by a well-structured args block. Every sentence provides essential information without redundancy.

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?

Covers purpose and parameters adequately, but lacks description of return values/output schema, failure behavior, or how the asset integrates into the scene.

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?

No schema descriptions (0% coverage), but the args block in description adds meaning: e.g., 'position: [x,y,z] world position' clarifies format and purpose beyond parameter names.

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?

Description clearly states verb 'Search...then load' and resource 'NVIDIA USD asset library', distinguishing it from sibling tools like load_usd which loads specific files.

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?

Implied usage for text-based asset search with auto-loading, but no explicit guidance on when not to use or comparison to alternatives like load_usd or create_object.

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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