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

Annotations already cover the read-only, open-world profile, so the description only needs to add operational detail — and it does: exactly one page per call, path-based pagination, and the shape of the payload (profile stats, expertise, story cards). No auth or rate-limit notes, but the bar is lowered by the annotations.

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?

Two dense sentences, no filler, with the call's scope and the required input provenance front-loaded before the return summary.

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 two-parameter read tool with full schema coverage, an output schema, and safety annotations, this is nearly self-sufficient. Only minor gaps (e.g., how many story cards per page, pagination termination) remain.

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 100%, so the schema already documents both the 1-based page default and the author slug source. The description largely restates the slug provenance and optionality without adding new syntax or format detail, so 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?

States a specific verb (fetch) and a precisely scoped resource: one contributor profile plus one page of its article archive. It also implicitly separates itself from yahoo_shopping_article by positioning itself as the follow-up profile lookup.

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?

Gives a concrete entry point: take the author slug from author_url on yahoo_shopping_article. That establishes the when-to-use chain clearly, though there are no explicit exclusions or guidance about when not to call it.

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