get_book_next

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

The readOnlyHint annotation already indicates this is a safe read operation, and the description doesn't contradict that. It adds minimal context beyond the annotation, such as that it operates relative to a series, but it doesn't disclose edge cases (e.g., what happens if the book is the last in the series).

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, front-loaded sentence with no wasted words. It conveys the core purpose efficiently and is appropriately sized for a simple tool.

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?

The tool is simple with one parameter and an output schema, so the description doesn't need to explain return values. However, it omits useful context such as how series order is determined and what happens when no next book exists, making it adequate but not fully complete.

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 has one required parameter, book_id, with no description (coverage 0%). The tool description does not mention book_id at all, failing to compensate for the schema's lack of detail. The parameter name is somewhat self-explanatory, but the description should have clarified that book_id refers to the current book in the series.

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 'Get the next book in the series' clearly identifies the action (get) and the resource (the next book in a series), distinguishing it from siblings like get_book_previous. However, it doesn't explicitly define what 'next' means (e.g., order by publication date or series position), leaving slight ambiguity.

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 explicit guidance on when to use this tool versus alternatives like get_book_previous or search_series. The context implies it is for retrieving the next book after a given one, but it lacks stated conditions, prerequisites, or exclusions.

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