get_daily_steps_range

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

With no annotations, the description carries the full burden of behavior disclosure. It does communicate the output content (steps, distance, step goal per day) and the default date-range behavior. It does not, however, mention read-only behavior, timezone assumptions, inclusive/exclusive boundaries, or any limits, which would further help the agent understand operational behavior.

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 compact and well-structured: a one-line summary followed by a minimal Args block. Every sentence adds value, and the default behaviors are placed in the most relevant section without unnecessary filler.

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 low complexity, the presence of an output schema, and the thorough documentation of both optional parameters and their defaults, the description provides everything an agent needs to invoke this tool correctly. No critical contextual information is missing for this retrieval tool.

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?

The input schema provides no description coverage and only generic null/string types with null defaults. The description compensates fully by specifying the exact format (YYYY-MM-DD) and the meaningful default for each parameter (14 days ago, today), making both parameters semantically clear.

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 identifies the resource: daily steps, distance, and step goal over a date range. It is specific about the granularity ('per day') and scope ('over a date range'), though it lacks an explicit verb and does not differentiate itself from similar step-related siblings like get_steps_timeline or get_steps_and_calories.

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 useful invocation context by explaining default date behavior (last 14 days, end_date defaults to today). However, it gives no guidance about when to use this tool instead of the many closely related analytics tools in the sibling list, and it does not state any exclusions or alternative-use conditions.

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