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 a useful content inventory (including that recent articles are returned), but says nothing about authentication needs, rate limits, or whether the profile may 404 for contributors without pages.

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 compact sentence, front-loaded with the resource and the field list, with no redundant restatement of the tool name or filler.

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 the description needn't explain return values, and annotations cover the read-only/open-world profile. The remaining gap is the unexplained url parameter and the absence of any guidance on obtaining a valid author URL, which an agent needs to call this 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?

The single required parameter is 'url' with 0% schema description coverage, so the description must carry the burden and it does not. It never clarifies whether url should be an author-profile URL, an article URL containing the byline, or a site-relative path — a meaningful ambiguity for a 1-param lookup tool.

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 resource (a HuffPost author/contributor's public profile) and enumerates exactly what it contains: name, job title, headshot, biography, social links, and recent articles. It clearly distinguishes itself from siblings like huffpost_article or huffpost_headlines by being an author-profile lookup, though it does not explicitly name 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?

Usage is only implied: an agent can infer you call this when you have an author and want their profile, but there is no explicit 'use this when' statement, no mention of alternatives such as huffpost_article for fetching a specific story, and no prerequisite guidance on where the URL comes from.

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