Communication Style

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

Annotations already declare readOnlyHint=true, destructiveHint=false, idempotentHint=true, so the safety profile is set. The description adds no further behavioral context (e.g., that it returns astrological communication advice, that it requires birth data, or how results are formatted). Since annotations are present, the bar is lower, but the description still fails to add meaningful behavioral detail beyond the structured fields.

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 very concise at two sentences plus an example, which efficiently communicates the core purpose. However, it could be improved by front-loading the key information more clearly and perhaps removing the group tag if it adds little value. Still, brevity is a strength here.

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 moderate complexity (7 parameters) and no output schema, the description should explain what the tool returns and how it differs from dozens of sibling pet tools. It does not specify output format, content, or scope, leaving a significant gap in completeness for an AI agent to use it correctly.

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 100%, with each of the 7 parameters having a clear description (e.g., 'Birth date YYYY-MM-DD'). The tool description does not add any additional meaning beyond what the schema already provides, so it appropriately remains at the baseline of 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 states 'How best to communicate with this pet,' which clearly indicates the tool provides communication advice for a pet. However, among many pet-related siblings (e.g., pet_training_style, pet_play_style, pet_personality), it does not differentiate this tool from similar ones, missing a chance to clarify its unique focus.

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 like pet_personality or pet_training_style. The description lacks prerequisites, context for invocation, or exclusions, leaving the AI agent without decision support.

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