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 useful scope context by enumerating the profile fields and noting it includes recent articles (i.e., nested content beyond the profile itself), but says nothing about pagination, freshness of 'recent', or error behavior when a URL is invalid.

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 front-loaded sentence that identifies the entity and enumerates the returned content with zero filler. Nothing redundant or padded.

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 single-parameter lookup with an output schema and annotations covering safety, the description is essentially complete. The only omission an agent might want is guidance on when to choose this over a related author/article tool, which is minor given the clear resource focus.

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?

With a single parameter at 100% schema description coverage, the schema already states that url is the canonical contributor URL. The description's phrasing ('one contributor's profile') only reinforces single-entity lookup and adds no format or example beyond the schema, so the baseline 3 applies.

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 names a specific verb and resource: retrieving one The New Yorker contributor's public profile, and itemizes what that profile contains (name, photo, biography, links, recent articles). This cleanly separates it from siblings like newyorker_article or newyorker_headlines, though it never names an alternative 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 only implied: an agent infers that this tool is for looking up a contributor given a URL, as opposed to fetching an article or a headline list. There is no explicit when-to-use statement, no prerequisite, and no routing to alternative tools.

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