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

Annotations already declare readOnlyHint=true and openWorldHint=true, covering the safety profile. The description adds nothing beyond that — no note on what the genre detail contains, whether an id/url/path is required, or how pagination (offset/sort/sortDir) behaves. It neither contradicts nor enriches the annotations.

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?

It is short, but brevity here reflects under-specification rather than efficient communication. There is no front-loaded statement of purpose, scope, or required inputs — just a four-word fragment.

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 values need not be described. However, for a six-parameter, zero-required tool with no schema documentation, the description supplies no input guidance, no usage context, and no sibling differentiation, leaving the definition materially incomplete.

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?

Six parameters (id, url, path, sort, offset, sortDir) with 0% schema description coverage and none of them explained in the description. The description does not compensate at all for the total absence of parameter documentation, leaving the agent unable to know how to target a genre or control sorting/pagination.

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 'Box Office Mojo genre detail' essentially restates the tool name and adds no distinguishing information. It does not clarify how this differs from the sibling boxofficemojo_genres (likely a genre list) or what 'detail' entails. This is close to a tautology rather than a specific verb+resource 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?

There is no guidance on when to use this tool versus boxofficemojo_genres, boxofficemojo_title, or any other sibling. No prerequisites, no conditions, no alternatives are mentioned; the agent must guess from the name alone.

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