get_mania_recommendations

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. The description only says 'retrieve' and gives no information about output format, side effects, permissions, or whether it is a read-only operation. For a tool with zero annotation coverage, this is a significant gap.

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, efficient sentence with no filler. It is appropriately front-loaded with the action and resource, though its brevity borders on under-specification, which is more a completeness issue than a conciseness flaw.

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 tool with one parameter and no output schema, the description should at least clarify how the ISBN is used and what the response represents. It does neither. The lack of any explanation about the relationship between the input and the returned 'mania recommendations' leaves the agent uncertain about the tool's behavior.

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 input schema provides 100% coverage for the single required parameter 'isbn13', including its format and multiple-book syntax. The description adds no parameter-specific information beyond what the schema already states, so the baseline of 3 applies.

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 the verb '조회합니다' (retrieve) and the resource '마니아 추천도서' (mania recommendation books), which is a clear verb+resource pairing. However, it does not clarify how the ISBN parameter relates to the recommendations—whether it filters by ISBN, returns recommendations for a specific book, or lists mania recommendations associated with that ISBN. The name suggests 'recommendations' but the purpose is ambiguous regarding the input.

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 given on when to use this tool versus its sibling 'get_reader_recommendations' or other recommendation tools. The description does not mention any context, prerequisites, or alternatives, leaving the agent to infer usage from the name alone.

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