get_book_chart

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

Annotations already declare readOnlyHint=true, so the read-only nature is clear. The description adds no further behavioral details such as rate limits, pagination behavior (despite 'count' parameter), or response format. Without output schema, more context would be beneficial.

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 extremely concise (two sentences) and front-loaded with the core purpose. Every part adds value; no wasted words.

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?

Given no output schema and moderate complexity (2 parameters, one with enum), the description should explain what the output looks like (e.g., list of books with fields). It only covers the input 'kind' parameter. The absence of output format and behavior of 'count' leaves the agent underinformed.

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 description explains the 'kind' enum values (fiction, non_fiction, new) which adds meaning beyond the schema's bare enum list. However, the 'count' parameter is not described; its purpose (number of items) is only implicit from its default and bounds. Schema coverage is 0%, so the description partially compensates.

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 explicitly states 'get book chart' and lists the specific categories (fiction, non_fiction, new) supported by the 'kind' parameter. This clearly distinguishes it from sibling tools like 'get_book' (single book) or 'get_book_reviews' (reviews).

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 on when to use this tool versus alternatives like 'search_book' or 'get_movie_chart'. There is no mention of prerequisites, limitations, or contexts where this tool is preferred.

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