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

Annotations already declare readOnly, idempotent, non-destructive and closed-world, so safety is covered. The description adds that only *published* reviews are returned, which is real behavioral context, but says nothing about pagination behavior, default result size, or what happens when multiple filters are combined.

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 sentence with no filler, and the returned content is front-loaded before the scoping clause. Efficient, though the parenthetical could be tightened.

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?

An output schema exists, so return-shape explanation is unnecessary, and the description covers what is returned and how to scope it. The remaining gap is the absence of pagination and filter-combination behavior for an 8-parameter, zero-required tool.

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 coverage is 50%, and the description names four of the eight parameters (clinic_id, practitioner, treatment_id, product_id) and frames them as alternative scopes, which is meaning beyond the schema. It says nothing about page/page_size or how rating interacts with the scope filters.

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 states the resource (published reviews plus an aggregate summary of average, count and distribution) and the four scoping dimensions. It is clear what the tool returns, though it never uses an explicit verb like 'list' and doesn't name a contrasting sibling.

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 phrase 'for one clinic_id, practitioner, treatment_id or product_id' hints that these are mutually exclusive scoping options, which is genuinely useful. However, it gives no when-to-use/when-not guidance, no mention of what happens with no filter at all, and no reference to any alternative tool.

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