get_daily_summary

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

No annotations are provided, so the description carries full burden for behavioral disclosure. It mentions the data returned (steps, calories, active minutes) but does not state whether the operation is read-only, requires authentication, or has any side effects. The date format and default are helpful, but key behavioral traits are missing.

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 consists of three short, front-loaded sentences with no wasted words. It immediately states what the tool returns, then provides format and default context. Every sentence serves a purpose.

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?

For a simple tool with two optional parameters and no output schema, the description is mostly adequate. It explains the daily summary metrics, date format, and default. However, it does not clarify whether the tool returns data for a single day or for a range, nor does it describe the output structure (e.g., array of daily summaries). This omission may leave an AI agent unsure of the response format.

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%, so the description must compensate. It adds format (YYYY-MM-DD) and default behavior (today if omitted) for both parameters. It does not differentiate start_date and end_date individually, but the two sentences provide practical, actionable guidance beyond the bare 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 provides a daily summary of steps, calories, and active minutes. It identifies the specific resource and action. However, it does not explicitly differentiate from sibling tools like get_activities or get_activity_detail, which could cause confusion for an AI agent choosing between them.

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 provides a usage guideline for default behavior ('if no dates, use today') and date format. However, it lacks guidance on when to use this tool versus siblings like get_activities for individual activities or get_recovery_metrics for recovery data.

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