list_books

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

With no annotations, the description carries the burden of disclosing behavioral traits. It conveys listing behavior, default sort order, and filtering support, which is good for a read-oriented tool. However, it does not explicitly state that the operation is read-only/idempotent or describe any limitations beyond parameter ranges.

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 well-structured. The opener is one sentence, followed by a clear Args list where every line adds meaningful detail without redundancy or filler.

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 read-only listing tool with an output schema and four optional parameters, the description covers the key invocation details: defaults, sorting, and filtering. The main omission is guidance about when to use this tool instead of the search-related siblings, but that gap is largely a usage-guidelines issue rather than a completeness failure.

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?

Schema description coverage is 0%, but the description thoroughly documents all four parameters with defaults, allowed values, and examples (e.g., limit range 1-200, sort_by fields, order values, calibre search expression). This fully compensates for the bare schema.

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 clear operation ('Browse books in the library') and gives the resource and default ordering. It differentiates itself from sibling tools like search_books mostly through the verb 'browse', but it does not explicitly contrast with them, and the 'search' parameter introduces some overlap.

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 about when to use this tool versus alternatives such as search_books or search_in_book. The description only implies a listing/filtering use case but never states exclusions or the preferred tool for complex search scenarios.

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