withings_get_workouts

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

With no annotations, the description carries full responsibility for behavioral disclosure. It explains cache-by-default behavior, the live fetch option, sorting by date, and prerequisites (sync). However, it does not explicitly state that the tool is read-only or mention rate limits or authentication, leaving minor gaps.

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 well-structured with a brief summary line followed by detailed 'Args:' section. Every sentence adds value, and it is front-loaded with key information. No redundancy or unnecessary text.

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 absence of annotations and low schema coverage, the description covers input parameters, return fields, behavior, and prerequisites. It also distinguishes from siblings. However, it lacks details on error handling, pagination, or exact data freshness, and does not reference the output schema that exists. Still, it is largely complete.

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 schema has 0% description coverage, so the description must fully explain parameters. It does so for all four: provides format and default for start_date (e.g., '90d', 'YYYY-MM-DD'), end_date (default today), category (case-insensitive partial match with examples), and live (boolean flag). This adds significant meaning beyond the schema's bare titles.

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 it retrieves workout sessions with specific data (type, duration, HR, calories). It distinguishes from the sibling tool withings_get_activity by specifying it is not for daily step/activity totals, providing a clear and unique purpose.

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?

Explicitly instructs users to run withings_sync first to populate the cache, explains default cache behavior versus live API usage via the 'live' parameter, and provides default date ranges. It also gives an explicit alternative (withings_get_activity) for daily totals, offering complete when-to-use guidance.

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