set_sky_texture

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

With no annotations, the description carries full burden of behavioral disclosure. It reveals the Nishita sky type and parameter meanings, but omits sun_intensity entirely and does not mention side effects (e.g., overwrites existing world texture), required user permissions, or irreversible changes.

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 brief but incomplete due to the missing sun_intensity parameter. It front-loads the purpose well but fails to cover all parameters, which is a significant omission.

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 lack of annotations, output schema, and four parameters, the description is insufficiently complete. It omits one parameter, does not describe the return behavior or effects on the scene, and provides no context for integration with other tools.

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?

Schema description coverage is 0%, so the description must compensate. It provides units and ranges for sun_elevation, sun_rotation, and turbidity, adding meaning beyond the bare schema. However, it completely omits the sun_intensity parameter, leaving it undocumented.

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 tool sets a procedural Nishita sky texture for outdoor lighting, specifying the parameter meanings for three of the four parameters. However, it does not explicitly distinguish this tool from other sky/texture or lighting tools among the siblings (e.g., set_world_hdri, add_light), which would push it to a 5.

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 provides no guidance on when to use this tool versus alternative lighting or sky-setting tools. It does not mention prerequisites, context, or scenarios where other tools would be more appropriate.

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