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

Annotations already declare readOnlyHint=true and openWorldHint=true, so safety profile is covered. The description adds that results are 'current dated article cards,' a useful hint about recency and result shape, but says nothing about pagination, ordering, or volume. With annotations doing the heavy lifting, this is adequate but not rich.

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 tight sentences, front-loaded with purpose and immediately followed by the input requirement. Zero waste.

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 unnecessary, and annotations cover read-only/open-world behavior. Purpose and the sole parameter's provenance are both covered, leaving only minor gaps like pagination or result count.

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 0% and the single 'section' param has no description, so the description must compensate. It does by specifying that the value is a section slug sourced from medicalnewstoday_sections, giving the agent a clear origin for the value even though the slug format itself is not spelled out.

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 (fetches) and resource (current dated article cards) scoped to one Medical News Today newsroom section. It distinguishes itself from the article/author tools by its section-scoped, card-level nature, though it doesn't explicitly contrast with the sibling medicalnewstoday_news.

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?

Explicitly tells the agent where the required input comes from ('a section slug returned by medicalnewstoday_sections'), establishing a clear prerequisite and routing to the right sibling for discovery. No explicit when-not conditions, but the usage context is unambiguous.

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