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whats2000

Isaac Sim MCP Server

by whats2000

transform_object

Set the position, rotation, and scale of any existing object in an Isaac Sim scene by specifying its prim path and desired transform values.

Instructions

Set the transform (position, rotation, scale) of an existing object.

Args: prim_path: The prim path of the object to transform. position: [x, y, z] new world position. rotation: [rx, ry, rz] new rotation in degrees. scale: [sx, sy, sz] new scale factors.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
prim_pathYes
positionNo
rotationNo
scaleNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior2/5

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

With no annotations provided, the description carries full burden for behavioral disclosure. It states 'set' implying mutation but lacks details on side effects, permissions, or constraints such as whether the transform is absolute or relative.

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 with a one-line summary followed by an Args section. It is well-structured and front-loaded, though the Args section adds minimal extra value over the schema.

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

Completeness5/5

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

Given the moderate complexity of a transform setter and the presence of an output schema (not shown but indicated), the description adequately covers the purpose and parameters. No gaps in understanding the operation.

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?

The description includes a docstring-style explanation for all four parameters, adding meaning beyond the schema (e.g., 'world position', 'degrees', 'scale factors'). Since schema coverage is 0%, this compensation is valuable, though the descriptions are brief.

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 'Set the transform (position, rotation, scale) of an existing object,' using a specific verb and resource. This distinguishes it from sibling tools like create_object or delete_object, which have different purposes.

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?

The description provides no guidance on when to use this tool versus alternatives. It does not mention when not to use it or suggest other tools for related operations like reading transforms.

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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