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 one useful behavioral detail — that articles are returned as 'one page' of recent articles, disclosing pagination — but says nothing about rate limits, auth, or whether url/slug must match.

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?

A single tight sentence with the resource front-loaded and the returned fields enumerated. No wasted words, though it is bare enough that structure alone cannot carry the definition.

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 values need not be described. The remaining gap is parameter usage — with three undocumented params and no required marker, an agent lacks enough to know whether to pass url, slug, or both.

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?

Three parameters (url, page, slug) with 0% schema description coverage and none required. The description only alludes to 'page' via 'one page of their recent articles'; it never clarifies the relationship between url and slug or which to supply, leaving real ambiguity.

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 (a Live Science author's public profile) and enumerates what it returns: name, job title, biography, social links, and recent articles. An agent can distinguish this from livescience_article/headlines/news/sections, though the description never explicitly contrasts with those siblings.

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 prerequisites, and no explanation of how to choose between the url and slug parameters. The purpose is inferable from the name, but nothing routes the agent or states alternatives.

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