set_world_color

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

No annotations are provided, so the description carries the full burden. It discloses that the background becomes a solid color with a given RGB and strength, but does not mention side effects (e.g., clearing other world settings) or whether the change is reversible. For a simple mutation, this is adequate but not thorough.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is two sentences long, front-loaded with the primary action, and every sentence adds value. There is no waste, and the structure is optimal for quick understanding.

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

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

Given the tool's simplicity, the description covers the essential information: what it does, parameter usage, and a use case. It lacks details about default values (e.g., default color if null) but that is partly in the schema. No output schema exists, so return format is not needed. It is complete enough for safe invocation.

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

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

The description adds clear meaning to both parameters: 'Color is [R,G,B] (0-1 range)' explains the array structure and value space, and 'Strength controls brightness' clarifies the purpose of the strength parameter. This fully compensates for the 0% schema coverage indicated.

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

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

The description clearly states the action: 'Set the world background to a solid color.' It specifies the resource (world background) and the result (solid color). The added note 'Good for studio-style renders' provides context that differentiates it from sibling tools like set_world_hdri or set_sky_texture.

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

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

The description includes a usage hint: 'Good for studio-style renders,' indicating when this tool is appropriate. However, it does not explicitly state when not to use it or name alternative tools, but the context is sufficient for a simple tool.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.