search_books

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

The description lacks behavioral disclosure beyond the search functionality. Without annotations, it does not mention pagination, rate limits, authentication needs, or behavior when no results are found. The phrase 'Search Hardcover' is ambiguous.

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 concise (one sentence) and front-loaded with the action. However, it could be more precise (e.g., clarifying 'Hardcover') without adding length.

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 description covers the main purpose and entity types, but lacks details on return format, pagination defaults, or result handling. With 4 parameters and no output schema, it is minimally viable 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?

Schema coverage is 100% with clear parameter descriptions. The tool description adds context about querying by title/author/ISBN and entity types, but this is largely redundant with the schema. Baseline 3 is appropriate.

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 clearly states it searches by title, author, or ISBN and supports multiple entity types, distinguishing it from single-entity retrieval tools like get_book or get_author. However, it does not explicitly differentiate from siblings, leaving room for 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?

No guidance is provided on when to use this tool versus alternatives such as get_book or search-specific entity tools. There are no exclusions or context for selecting among the many searchable entity types.

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