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

readOnlyHint=true already tells the agent this is a safe read, lowering the bar. The description adds useful behavioral context by stating the response contains full detail including every exercise, which signals the payload can be large. It does not mention error behavior for a missing id or any auth requirements.

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?

One short sentence that is front-loaded with the resource and scoped by the depth qualifier; every clause carries information. It is terse to the point of being a fragment, but there is no waste.

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 one-parameter read with no output schema, the description establishes what is returned ('full detail... every exercise'), which is adequate. It leaves the id format and failure modes unspecified, and there is no output schema to fill that gap.

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?

Schema description coverage is 0% and the single 'id' parameter has no description in the schema. The description only implies the id identifies a template; it says nothing about whether it is a UUID, slug, or numeric identifier, so it fails to compensate for the coverage gap.

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 names a specific verb (retrieve full detail) and resource (one workout plan template), and the phrase 'including every exercise' clarifies the depth of the record. It distinguishes itself from list_workout_plan_templates by emphasizing 'one' template with full detail, but never names that sibling explicitly.

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 explicit when-to-use guidance, no prerequisites, and no mention of the alternative sibling (list_workout_plan_templates) that would be used to enumerate templates. Usage is only implied by 'one workout plan template'.

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