list_search_books

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

Annotations already declare the tool read-only, idempotent, and non-destructive, so the safety profile is covered. The description adds no behavioral context beyond the GET verb and endpoint, such as pagination, auth requirements, or result scoping.

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 short and free of filler, and the endpoint is front-loaded. However, 'Get search books' is redundant with the tool name and does not add real value, so the brevity is closer to under-specification than effective 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?

The output schema and annotations reduce the need to document return values and safety. Still, the description never explains what a 'search book' is, how results are scoped, or how this differs from the many sibling list_search_* tools, leaving an agent with insufficient context for confident selection.

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 and an empty input schema, so there is practically nothing for the description to clarify. With schema coverage at 100%, the baseline of 4 applies because no parameter documentation is needed.

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 search books' essentially restates the tool name and does not clarify what a 'search book' is or what this endpoint returns. The endpoint path adds some specificity, but it does not distinguish this tool from sibling search tools like list_search_authors, list_search_covers, or list_search_podcast.

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 about when to call this tool versus the many sibling search/list tools. The description only repeats the endpoint and gives no context, exclusions, or alternative selection criteria.

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