log_workout

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It only states that a workout is logged and a confirmation is returned; it does not disclose whether the log is persisted, where it is stored, whether it overwrites previous entries, or any side effects. This is a significant transparency gap.

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 front-loaded with the core purpose, followed by a clear Args/Returns structure. There is no fluff or filler; every line contributes to understanding how to call the tool.

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 three-parameter tool with an output schema, the description covers the necessary invocation details: what to pass and what to expect back. However, the existence of a nearly-named sibling ('log_workout_session_to_dynamodb') creates ambiguity about where the workout is being logged and whether this is the right tool to use. That missing context keeps this at the minimum viable level.

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 zero property descriptions, so the description must compensate. It does so by defining each parameter: 'exercise' as the name of the exercise, 'sets' as the number of sets, and 'reps' as repetitions per set. It does not add constraints like positive integers or allowed exercise names, but it clearly conveys meaning for all three params.

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 a specific action ('Log') and a specific resource ('workout session'), and the Returns line clarifies what the result will look like. However, it does not distinguish this tool from the sibling 'log_workout_session_to_dynamodb', so it stops short of full clarity.

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?

There is no guidance on when to use this tool versus alternatives such as 'log_workout_session_to_dynamodb' or 'save_workout_plan_to_dynamodb'. The description gives no context about storage, persistence, or selection criteria, so the agent must infer when this tool is appropriate.

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