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nobulart

octane-mcp

by nobulart

octane_update_object

Update an existing object's attributes within a saved scene manifest and resave the scene to persist modifications.

Instructions

Update one object in a saved scene manifest and resave it.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
changesYes
scene_idYes
object_idYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior2/5

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

With no annotations, the description carries the full burden. It only states 'update' and 'resave', which implies mutation, but does not discuss permissions, side effects, or allowed changes beyond a basic update.

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 single sentence is concise and front-loaded, but it sacrifices necessary detail. It is not verbose, but could include more without losing conciseness.

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

Completeness2/5

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

Given the complexity (3 params, 0% schema coverage, no annotations, mutation behavior), the description is inadequate. It fails to explain what changes are valid, what the output is, or any prerequisites.

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

Parameters1/5

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

Schema description coverage is 0%. The description does not explain any of the three parameters: scene_id, object_id, or changes. The 'changes' object is left undefined, which is critical for correct invocation.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states it updates an object in a scene manifest and resaves it. The verb 'update' and resource 'object' are specific, and it implicitly distinguishes from add/remove siblings, though not explicitly.

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?

No guidance is provided on when to use this tool versus alternatives like octane_add_object or octane_remove_object. The description lacks context for usage.

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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