justwatch_title_media

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

No annotations are provided, so the description must fully disclose behavior. It implies a read operation by saying 'Get' and mentions the returned data (credits, clips, backdrops), but does not clarify auth requirements, rate limits, or any side effects. It adds moderate transparency.

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 concise sentence followed by an example. It is front-loaded with the core purpose. Slightly lacking structure, but no redundant information.

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?

There is no output schema, so the description should describe the return format more thoroughly. It only says 'returns normalized credits, clips, and backdrops', which is vague. The role of 'country' and 'language' parameters in filtering media is not explained. For a media retrieval tool with 3 parameters, more detail is needed.

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?

The schema has 100% coverage for parameters. The description adds value by providing an example ID format ('tm92641') and clarifying that the ID is a 'raw JustWatch movie/show id'. However, it does not explain the effect of 'country' and 'language' parameters on the returned media.

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 tool retrieves 'JustWatch title media' and specifies it returns 'normalized credits, clips, and backdrops' for a given movie/show ID, with an example ID 'tm92641'. This distinguishes it from sibling tools like 'justwatch_title' or 'justwatch_title_offers'.

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 provides context by mentioning the input ID format and example, but does not explicitly state when to use this tool versus alternatives like 'justwatch_title' or 'justwatch_title_by_id'. No guidance on when not to use it.

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