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

Annotations declare readOnlyHint and openWorldHint, covering safety and external fetch. The description adds that the profile includes public bio/social data and only one page of recent articles, which hints at pagination, but it does not add operational details like rate limits or auth behavior beyond what annotations imply.

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?

Single front-loaded sentence that enumerates the return payload without filler. Every element earns its place.

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 an output schema handling return structure, annotations covering safety, and full schema coverage for both parameters, the description supplies the necessary content summary. It omits explicit usage guidance, but that is primarily a separate guidance concern.

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%; both url and page are fully documented in the schema. The description mentions 'one page of their recent articles,' reinforcing the page parameter's meaning, but adds no syntax, format, or default beyond the 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 specific resource (Daily Mail author public profile) and enumerates returned fields (name, job title, bio, social accounts, recent articles). It distinguishes itself from sibling dailymail_article/headlines/news by focusing on one author's profile.

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 when-to-use or when-not-to-use guidance is provided, and no alternative sibling (e.g., dailymail_article for individual articles) is named. The agent can infer its purpose but must rely on the tool name alone to choose it over other dailymail_* endpoints.

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