get_libraries_by_id_narrators

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

The annotations already declare readOnlyHint true, idempotentHint true, and destructiveHint false, and the description adds no behavioral detail beyond restating the GET endpoint. No side effects, authorization requirements, or response behavior are disclosed.

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 compact and front-loaded, with the endpoint and argument list presented clearly. It wastes few words, though 'Get libraries narrators' and the endpoint express overlapping 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?

For a single-parameter read-only tool with an output schema present, the core call path is adequately documented. However, it omits usage context and any behavioral notes, leaving the description minimally viable rather than fully self-sufficient.

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?

With 0% schema description coverage, the description compensates by identifying id as a path parameter, and the endpoint shows it is the library ID. This goes beyond the schema title 'Id' and gives enough meaning to invoke the tool correctly.

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 states a specific verb ('Get') and resource ('libraries narrators'), and the endpoint path clarifies that it returns the narrators for a given library. It is distinguishable from sibling library subresource tools such as get_libraries_by_id_authors, though it does not explicitly contrast itself with them.

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?

No guidance is provided about when to use this tool instead of alternatives. There is no mention of exclusions, prerequisites, or any relation to sibling operations like get_libraries_by_id_authors or delete_libraries_by_id_narrators_by_narrator_id.

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