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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only says 'Get' without mentioning read-only nature, pagination, return format, or what 'featured' means operationally. The agent gets minimal behavioral context beyond the schema's limit parameter.

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, clear sentence that says exactly what the tool does without waste. It is appropriately concise and easy to parse.

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 simple tool with one optional parameter and no output schema, the description conveys the core purpose but omits return value details. Given the existence of sibling tools like get_movie_details, the agent might need to know whether this returns summaries or full details, which the description does not address.

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 fully documents the single 'limit' parameter with range and default values, so schema coverage is 100%. The description does not add any parameter-specific meaning, but the schema already handles the semantics, making the baseline 3 appropriate.

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 gets currently featured and recommended Blu-ray movies, using a specific verb 'get' and a clear resource. It does not explicitly differentiate from sibling tools like browse_movies or search_movies, but the focus on 'featured and recommended' provides a distinct purpose.

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 retrieving featured movies, but provides no explicit when-to-use guidance or mention of alternatives. There are no siblings referenced or exclusions, so the usage is inferred from the purpose rather than clearly stated.

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