get_daily_summary

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

No annotations are provided, so the description carries the burden. It discloses date handling (ISO format, default last 7 days) and optional sleep stages flag. However, it does not mention potential rate limits, auth requirements, or that it is a read-only operation, though the read-only nature is implicit.

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 a single paragraph that lists metrics and key behaviors efficiently. It is front-loaded with the main output and then adds date and flag details. No wasted words, but a bulleted format could improve scannability.

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?

The tool has a simple schema with only 3 optional parameters and an output schema. The description covers the main output fields and the parameter semantics, making it adequate for an agent to call correctly. Minor gaps include not specifying the exact output structure, but the output schema likely covers that.

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 explains that dates are ISO YYYY-MM-DD and defaults to last 7 days, but does not clarify which parameter is 'from' vs 'to' (though names are self-explanatory). It also explains include_sleep_stages, but not the exact format of output.

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 per-day health and sleep data, listing specific metrics (steps, distance, calories, sleep stages). It distinguishes itself from siblings by focusing on daily summary, whereas siblings like get_workout_detail or get_health_metrics target other data types.

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 implies use for daily summaries and mentions date range defaults and optional sleep stages. It does not explicitly state when not to use it or name alternatives, but the context of siblings makes the distinction clear enough.

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