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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so safety is covered. The description adds real value beyond that by disclosing what is searched (titles, descriptions, paths) and what is returned (path and URL), which matters because there is no output schema.

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?

Two compact sentences plus a docs URL, with the core scope front-loaded and the chaining hint immediately after the return-shape statement. No filler sentences.

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?

With no output schema, the description correctly compensates by describing the return payload (matches with path and URL) and the handoff to get_page. Remaining gaps are minor: no mention of result-set behavior relative to the limit cap or locale effects, though both are documented in the schema.

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 100%, with limit, query and locale all documented inline including examples and defaults, so the schema does the heavy lifting. The description adds only marginal meaning by clarifying that matching runs against titles, descriptions and paths; 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?

States a specific verb and resource ('Full-text search over the published pages of cyberlibrary.com') and enumerates the searched fields (titles, descriptions, paths). The 'published pages' scope implicitly separates it from sibling search_planned_topics, and the description makes the tool's output concrete (best matches with path and URL).

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?

Gives clear follow-up context: 'pass a path to get_page to read it,' which routes the agent into the correct next tool. It does not, however, state when to prefer this over search_planned_topics or list_topics, so the alternative-selection guidance is implied rather than explicit.

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