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

Annotations already declare readOnlyHint=true, so the safety profile is covered by structured data rather than the description. The description does add a small amount of value by disclosing the shape of returned records (id, title, tags, difficulty, goal) with no output schema present, but says nothing about pagination behavior or result ordering.

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?

A single front-loaded sentence with no filler, and the returned-field list is compact rather than rambling. Its brevity borders on under-specification for a five-parameter tool, which keeps it from a 5.

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?

With five filter/pagination parameters at 0% coverage and no output schema, the description leaves too much unsaid for an agent to invoke it confidently — especially the tag/search semantics and paging. The returned-field list partially compensates for the missing output schema but not for the parameter 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?

Five optional parameters with 0% schema description coverage, and the description explains none of them. The parenthetical mention of 'tags' faintly gestures at the tag filter, but search, onlyMine, pageSize and pageNumber — including the pagination defaults and the max of 100 — are left entirely undocumented.

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?

Specific verb+resource ('List the coach's diet plan templates') and it enumerates the returned fields, which separates it from list_diet_plans and list_workout_plan_templates at a glance. It stops just short of naming the sibling alternatives explicitly, so it gets a 4 rather than a 5.

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 statement of when to use this versus list_diet_plans or get_diet_plan_template, and no prerequisites or exclusions. The agent must infer that this is the browse/collection operation and the others are the single-item or instance variants.

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