list_movies_popular

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

Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and non-destructive behavior. The description adds useful behavioral context beyond those: the concrete endpoint path and detailed pagination behavior including low default limits, endpoint maximums, and clamping of over-limit values. No contradiction with annotations exists.

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 organized as a readable parameter list with the endpoint front-loaded. However, the watchnow section is verbose and inconsistently formatted, and repeated 'Query parameter' lines add length without information. It is adequate but not especially crisp.

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 tool with 16 parameters and no schema-level descriptions, this definition is incomplete. It covers watchnow and pagination well, but leaves filter parameter formats, extended value options, and differentiation from sibling popular/trending/hot list tools undefined. The output schema and annotations cover some gaps, but not enough for reliable invocation of the filtering parameters.

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 carries the burden of explaining parameters. It provides real semantics for watchnow, limit, page, and the ignore_* flags, but eight parameters (genres, subgenres, years, ratings, start_date, end_date, runtimes, countries, certifications) are dismissed as 'Query parameter', adding no meaning beyond the schema property names. An agent cannot determine valid filter formats or value syntax.

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 clearly states the action and resource: 'Get popular movies' and the endpoint GET /movies/popular. However, it does not distinguish itself from closely related siblings like list_movies_trending, list_movies_hot, or list_movies_anticipated, so an agent must rely on the name alone to select among them.

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 guidance is provided about when to use this tool versus alternatives. The description only says 'Get popular movies', with no mention of how popular differs from trending, hot, anticipated, or boxoffice, and no exclusions or preference conditions.

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