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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds the useful fact that the response bundles recent articles alongside the profile, but says nothing about pagination, how many recent articles are returned, or author identification limits.

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 efficient sentence with the resource front-loaded and no filler. Slightly terse given the tool has an undocumented parameter that could have been covered in the same sentence.

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-value detail is not required, and the description does enumerate the main returned fields. However, the lone input parameter's expected format is left completely unspecified, which is a real gap for an agent preparing a call.

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?

The single 'url' parameter has 0% schema description coverage and the description never mentions it at all — no format, no source, no example. With one undocumented parameter the description should compensate, and it does not.

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 New York Magazine author's public profile) and enumerates the returned fields (name, job title, bio, recent articles), which distinguishes it from sibling nymag_article/news/headlines. It does not name those siblings explicitly, but the resource is clear enough for an agent to select correctly.

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 guidance on when to use this tool versus nymag_article or nymag_news, and no stated prerequisite that an author URL is required. The agent must infer usage entirely from the name and returned-field list.

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