List TMDB Movies

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

No annotations are provided, so the description carries the full burden for behavioral disclosure. It mentions no behavior beyond listing categories, omitting important details such as pagination behavior, language/region defaults, or response structure. For a tool that likely has default sorting and paging, this is a significant gap.

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 a single short sentence with no filler, making it technically concise. However, it is so minimal that it borders on under-specification rather than intentional brevity, and it does not front-load key usage constraints.

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 four parameters, no output schema, and no annotations, the description is far too sparse. It does not explain what the response contains, how pagination works, the effect of region/language, or the difference from similar list tools. This is insufficient for an agent to confidently select and invoke the tool correctly.

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. However, it only repeats the category enum values and provides no extra meaning for page, region, or language. The behavior of these parameters is left entirely to the reader's inference, failing to add value beyond the schema's type/default definitions.

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 it lists movies by category ('popular, top-rated, now-playing, or upcoming'), which specifies a concrete action and resource. It implicitly distinguishes from search/get tools by listing, but it does not explicitly contrast with sibling tools like discover or trending, so it misses some differentiation.

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 alternatives such as discover, trending, or search. The description only states what it does, not in which scenarios it is the preferred choice.

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