setup_lighting

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

No annotations are provided, so the description bears full responsibility for behavioral context. It only states the action of adding a light node without disclosing side effects, permissions, or default behaviors (e.g., default light properties or scene integration).

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 a single, focused sentence with no extraneous information. It efficiently conveys the core purpose while remaining concise.

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?

For a simple addition tool, the description is adequate but lacks depth. It doesn't explain default light behavior, return value, or interaction with the scene. Given no output schema and simple parameter schema, it meets minimum viability but has gaps.

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 coverage is 100% with descriptive parameter fields. The description adds no additional meaning beyond the schema (e.g., it lists types mentioned in schema). Thus, with high schema coverage, score is baseline 3.

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 adds a light node and lists the three specific types (DirectionalLight3D, OmniLight3D, SpotLight3D). This provides a specific verb+resource, distinguishing it from generic sibling tools like 'add_node'.

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 alternatives. While it is implicitly specialized for lights versus the generic 'add_node', it does not explicitly state use cases or when not to use it, such as for other node types.

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