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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds useful behavior beyond that by disclosing the return payload ('titles, URLs, summaries and quick answers'), which matters because no output schema exists. It does not mention result limits or ranking behavior, keeping it short of a 5.

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 tightly packed sentences with the action and resource front-loaded. The parenthetical topic list is long but earns its place by scoping retrieval, and the return statement is appended efficiently. 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?

For a read-only search tool with no output schema, the description covers what the tool returns, which is the key gap it must fill. Remaining omissions are minor: the 'limit' parameter behavior and how queries are matched are unstated.

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% for two parameters. The description clarifies 'query' semantically by tying it to a natural-language question, but the 'limit' parameter (default 3, max 5) is never explained in the description or schema, so half the parameters remain undocumented.

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 uses a specific verb ('Find') plus resource ('Delve to Life style guide') and enumerates the topical scope (dress codes, weddings, funerals, interviews, weather, colour, proportion, screen-inspired style). This lets an agent distinguish it as a broad topical search versus siblings like explain_dress_code or list_dress_codes, though it never names those alternatives explicitly.

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?

Usage is implied by 'for a question' — an agent can infer this is the free-text lookup path — but there is no explicit when-to-use statement, no when-not-to-use, and no routing toward the more specific sibling tools (colour_combinations, suggest_outfit, list_dress_codes). Guidance is adequate but must be inferred.

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