garmin_workout_step_formats

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

With no annotations provided, the description carries the full burden. It conveys that the tool is informational and focused on capabilities and limitations, which implies a read-only reference behavior. It does not explicitly state side effects, return behavior, or safety, but for a zero-parameter reference tool this is less critical.

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 compact sentence with no filler or repetition. It front-loads the main subject and then adds the limitation aspect. It is slightly abstract because it lacks a verb, but it remains appropriately sized for a simple reference 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 zero-parameter tool with an output schema, the description is largely complete: it identifies the subject matter and the key limitation angle. It could be stronger by explicitly linking to use cases like workout creation or preview, but nothing essential about how to call it is missing.

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 tool has zero parameters and schema description coverage is 100%, so the baseline is 4. The description adds useful context by mentioning 'programming rule' limitations, which helps the agent understand what kind of knowledge the tool provides even though no parameters need explanation.

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 tool as an informational reference for Garmin workout step formats and their expressive limitations. It is distinct from sibling tools like garmin_workouts or garmin_workout, but it lacks an explicit verb such as 'returns' or 'lists,' so it stops short of a fully explicit operation statement.

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 that this tool should be consulted to understand what Garmin's workout model can and cannot represent, especially around programming rules. However, it does not explicitly state when to use it versus alternatives, nor does it mention scenarios such as validating a workout plan before creation.

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