get_muscle_group_summary

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

With no annotations, the description provides only the default date range behavior. It does not disclose read-only nature, aggregation method, or other traits, leaving significant gaps for the agent.

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 extremely concise: one sentence plus parameter list, front-loaded with purpose and default. Every sentence is essential, no fluff.

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 presence of an output schema, the description covers basic usage for date parameters. However, it lacks explanation of what 'sets and volume summary' entails and how to interpret results, making it minimally 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 description adds value by specifying date format (YYYY-MM-DD) and default 7-day range. However, it does not explain behavior when parameters are omitted or the relationship between start and end dates.

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 'muscle group sets and volume summary', identifying the specific resource and action. It is distinct from siblings like get_workout_history, though it does not explicitly differentiate.

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. The description only mentions default date range, lacking context on when to prefer this over other workout-related tools.

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