Get TMDB Movie

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

With no annotations, the description carries full burden for behavioral disclosure. It states the tool 'gets' data, which implies a read-only operation, and lists the output categories. However, it does not disclose how the 'region' and 'language' parameters affect the response, nor any potential side effects or error conditions, leaving some ambiguity.

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, well-structured sentence that front-loads the main purpose ('Gets a movie's details') and then succinctly lists complementary output areas. No words are wasted; it effectively conveys the tool's scope without unnecessary elaboration.

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?

The tool has no output schema and no annotations, so the description must convey what will be returned. It does cover the key facets (details, director, cast, trailer, watch providers), but 'details' is somewhat broad and the impact of input parameters on the output is not explicitly spelled out. Still, the description gives a solid high-level picture.

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 mentions 'regional watch providers', indirectly referencing the 'region' parameter, but does not explain the 'language' parameter at all. The meaning of 'movieId' is inferable from the resource name, but the description adds no direct parameter-level detail.

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 uses the specific verb 'Gets' and identifies the resource as 'a movie', then enumerates the exact information returned (details, director, top cast, trailer, regional watch providers). This clearly distinguishes it from sibling tools like tmdb_search_movies or tmdb_discover_movies, which serve different purposes.

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 implies usage for fetching details about a single, known movie, but does not explicitly state when to choose this over alternatives such as search or discover. It lacks any exclusionary guidance or explicit mention of needing a movieId, relying on the schema for that cue.

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