Withings Sleep Detail

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

Annotations already declare readOnlyHint=true, openWorldHint=true, idempotentHint=true, and destructiveHint=false. The description adds the required scope and states that data is not medical advice, but does not elaborate on return format, pagination behavior, or data completeness beyond the schema. No contradictions with annotations.

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 short with two sentences, front-loading the action and resource. It is efficient with no wasted words. However, it could be slightly more structured to include when to use, which would improve readability.

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 tool has no required parameters, a detailed output schema, and 8 optional parameters, the description is minimal. It does not explain key aspects like pagination, the meaning of 'detailed' sleep data, or the role of privacy_mode/response_format. While the output schema helps, more context would improve completeness.

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 high (88%), and each parameter already has a description. The tool description does not add any additional meaning or clarification to the parameters beyond what is in the schema, so the baseline score of 3 is appropriate.

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 action ('List'), resource ('detailed Withings sleep data'), and a prerequisite ('Requires user.activity scope'). It provides a caveat about medical advice. However, it does not explicitly distinguish itself from sibling tools like withings_list_sleep_summary, though 'detailed' implies a difference.

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 mentions a required scope and a disclaimer, but does not provide explicit guidance on when to use this tool versus alternatives, nor any exclusions. The usage context is implied by the resource type, but no direct comparisons or when-not-to-use advice is given.

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