ray

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

With no annotations, the description bears full burden. It does not disclose any behavioral traits such as side effects, state changes, or requirements. An agent cannot infer safety or impact from 'Performs ray-tracing' alone.

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 extremely brief (three words), but this is under-specification rather than effective conciseness. It does not earn its place as it omits critical information for tool selection and invocation.

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 complexity of ray-tracing and the lack of annotations, the description is completely inadequate. Even though an output schema exists, the description fails to explain what the tool returns or how it transforms the scene, leaving major 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?

The input schema has 0% description coverage for parameters 'width' and 'height'. The description adds no explanation of their meaning or purpose, leaving the agent unable to correctly set these arguments.

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 'Performs ray-tracing' states a verb and resource but is too vague. It does not explain what ray-tracing accomplishes (e.g., image generation, scene modification) or how it differs from siblings like 'png' or 'draw'.

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?

No guidance is provided on when to use this tool versus alternatives. The description lacks any context about prerequisites, typical use cases, or conditions that favor ray-tracing over other rendering or export tools.

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