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

With no annotations, the description must carry the burden. It states it returns the most relevant passages, which implies a read-only operation, but does not explicitly declare non-destructive behavior, permissions, or other constraints. It adds scope context but lacks explicit behavioral disclosures.

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 filler. It efficiently conveys the purpose and scope without excess 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?

For a search tool with no output schema and no parameter descriptions, the description is incomplete. It does not explain the 'limit' parameter, the query format, or the structure of the returned passages. Significant gaps remain for a correct invocation.

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 0%, so the description must compensate. It indirectly covers the 'query' by describing the search, but completely ignores the 'limit' parameter. The description adds minimal value for understanding the parameters.

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 the action (search) and the specific resource (the full text of a specific book), and even enumerates the topics covered. This makes it unambiguous and distinct from the sibling tools, which are about tests, questions, and scoring.

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?

The description implies when to use it (when you need to search the book's content) and the sibling names make the distinction obvious. However, it does not explicitly state exclusions or alternative conditions, so it stops short of full 5.

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