get_spo2_data

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

No annotations are provided, so the description bears full burden. It does not disclose behavioral traits such as read-only nature (implied by 'Get'), data range, rate limits, or whether multiple measurements may be returned for a single date. The minimal description adds no behavioral context beyond the action.

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 and front-loaded with the purpose. It wastes no words, but the lack of structure (e.g., sections for returns, examples) slightly reduces clarity. It is appropriate for the tool's simplicity.

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 simple input (one required parameter) but no output schema and no annotations, the description omits details about the return format, number of measurements, and data granularity. This is insufficient for an agent to understand what the tool returns, making it incomplete.

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 0% (no descriptions in schema). The description adds format information for 'cdate' ('YYYY-MM-DD'), which is valuable beyond the bare schema. However, it does not explain constraints like allowable date range or timezone, leaving some ambiguity.

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?

Description clearly states it retrieves daily SpO2 measurements, specifying the resource and verb. However, it does not explicitly differentiate from the sibling 'get_respiration_data' which may also include SpO2, but the focus on SpO2 and 'daily' provides sufficient 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 like 'get_respiration_data'. No prerequisites, limitations, or exclusions mentioned, leaving the agent without context for proper selection.

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