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justwatch_title_by_id

Look up a movie or show on JustWatch by its raw GraphQL ID (e.g., tm92641 or ts287292). Supports country and language for localized results.

Instructions

Get JustWatch title by raw id. Looks up a movie or show by raw JustWatch GraphQL id such as tm92641 or ts287292.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
idYesRaw JustWatch movie/show id matching tm[0-9]+ or ts[0-9]+
countryNoTwo-letter country code
languageNoTwo-letter language code
Behavior2/5

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It only states it is a lookup, omitting details on authentication, rate limits, error handling, or return structure. For a read-only operation, this is minimal.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single front-loaded sentence (22 words) that immediately states the tool's purpose, followed by an illustrative example. No wasted words.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With no output schema, the description should explain what a 'title' includes or any pagination/error behavior. It does not, making it incomplete for an agent needing to interpret results.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, setting a baseline of 3. The description adds value for the 'id' parameter by providing example formats (tm..., ts...), but adds nothing beyond schema for 'country' and 'language'.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool retrieves a JustWatch title using a raw GraphQL id, distinguishing it from search or other lookup tools. Examples of ids (e.g., tm92641, ts287292) clarify the input format.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies use when a raw id is available, but does not explicitly contrast with sibling tools like justwatch_search or justwatch_title. No when-not-to-use or alternative guidance is provided.

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

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