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

Annotations already declare readOnlyHint=true and openWorldHint=true, so safety is covered. The description adds that the article list is paginated to a single page, which is useful behavioral context, but says nothing about auth, rate limits, or what happens on an unknown author.

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?

One sentence, front-loaded with the resource and then the payload contents; no filler. Slight ambiguity is traded for brevity rather than padding.

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?

An output schema exists, so return fields need not be re-documented, and the description does name the profile fields. However, with 0% parameter coverage and no usage guidance, an agent still lacks the information needed to invoke it correctly.

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% and three parameters (url, slug, page) exist, yet the description never explains which identifier to supply or whether url and slug are interchangeable. Only pagination is loosely implied by 'one page of their recent articles'.

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 resource (one Newsweek author's public profile) and enumerates the returned fields, so an agent can tell it apart from newsweek_article or newsweek_headlines. It stops short of explaining how an author is identified, but the purpose itself is unambiguous.

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 guidance, no mention of alternatives, and no indication of how the agent is expected to obtain an author slug or URL before calling. The agent is left to infer the entry path entirely.

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