seerr_list_backdrops

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

The annotation 'readOnlyHint: true' already informs the agent of the read-only nature. The description adds the scope 'trending items' but does not disclose additional behavioral traits such as pagination, response structure, or whether it returns only a single backdrop or multiple. Given the presence of an output schema and the readOnlyHint, the description provides marginal added value, landing at a baseline 3.

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 that front-loads the verb and resource. It contains no redundant or verbose language, earning a perfect score for conciseness.

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 zero-parameter, read-only tool with an output schema, the description is reasonably complete. It explains what the tool returns (backdrops) and the context (trending items). However, it does not clarify what constitutes 'trending items' (e.g., movies and TV shows), which could be inferred from sibling tools but is not explicitly stated. This minor gap keeps it from a 5.

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 tool has zero parameters, so there are no parameter semantics to clarify. The description does not need to add anything; the baseline for no parameters is 4, which is appropriate given the simplicity.

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's function: 'Get backdrops of trending items' - a specific verb ('Get') and resource ('backdrops') with a scope ('trending items'). It is easy to understand, though it does not explicitly differentiate from the similar sibling tool 'seerr_list_discover_trending' which likely returns the trending items themselves.

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. The description does not mention any prerequisites, use cases, or exclusions. With sibling tools like 'seerr_list_discover_trending' available, the usage context is only implied, not stated.

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