get_discover_movies_genre_by_genre_id

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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so the safe read-only nature is covered. The description adds the HTTP method GET and distinguishes path vs query parameters, but provides no additional behavioral context such as pagination behavior, language handling, or response characteristics beyond the existing output schema.

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 compact and front-loaded: a one-line purpose, the exact endpoint, and a clean parameter list. No filler or repetition.

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?

Given the simple GET operation, existing annotations, and an output schema, the description covers the essentials. However, it omits usage guidance and meaningful parameter explanations, leaving the agent to infer when to use this tool and what valid values for page/language look like.

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%, so the description must compensate. It only classifies genre_id, page, and language as path or query parameters without explaining valid values, defaults, or how page/language affect results. This adds minimal meaning beyond the schema's type and title information.

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 opens with a specific verb and resource: 'Discover movies by genre.' The endpoint 'GET /api/v1/discover/movies/genre/{genreId}' reinforces the exact operation and, combined with the name, clearly distinguishes it from siblings like get_discover_tv_genre_by_genre_id or get_discover_movies_language_by_language.

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 only states what the tool does and lists parameters; it gives no explicit guidance on when to choose it over alternatives such as list_discover_movies or get_discover_movies_studio_by_studio_id. No when-not-to-use or alternative routing is provided.

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