get_cardiovascular_age

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

No annotations are provided, so the description must convey behavioral traits. It describes the tool as retrieving an estimate based on unspecified metrics, but does not disclose data sources, computation method, accuracy, or whether it is read-only. The lack of detail leaves uncertainty about side effects and reliability.

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?

Two sentences with no wasted words. The purpose is stated in the first sentence, and the second adds the comparative context. Efficient and front-loaded.

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?

No output schema is provided, and the description fails to explain what the return value includes (e.g., a number, a range, a comparison chart). It mentions comparison but does not specify output format, making it incomplete for an agent to judge how to use the result.

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 clear parameter descriptions in the input schema (date format and defaults). The description does not add or clarify parameter usage further, meeting the baseline expectation for a well-documented schema.

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 retrieves estimated cardiovascular age and contrasts it with actual age. It distinguishes from sibling tools, none of which specifically target cardiovascular age. However, it vaguely references 'heart health metrics' without specifying what they are, which slightly reduces clarity.

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 on when to use this tool versus alternatives. The description implies its use for comparing ages, but does not state prerequisites, contraindications, or when another tool (e.g., get_heart_rate) might be more appropriate.

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