pagesix_headlines

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It mentions that headlines are 'fresh' and from a 'public RSS section', which adds some context about data source and recency. However, it does not disclose potential failure modes (e.g., section not found), rate limits, or whether it returns article metadata. This is a gap for a tool with no annotation support.

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?

The description is two sentences, concise and to the point. It front-loads the primary function and adds a brief note about freshness and source. No wasted words; it is appropriately sized for a simple headline-fetching tool.

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 tool with one parameter, an enum, and no output schema, the description is adequate but not complete. It doesn't specify the return format (e.g., list of strings or objects), which the agent might need. Since there's no output schema, the description should ideally note what the headlines look like, but it's missing. Overall, it's minimally sufficient for a simple tool.

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 schema has 100% coverage with the parameter 'section' described as 'Page Six RSS section slug' and an enum of valid values. The description adds minimal beyond this—it doesn't explain how to select a section or that the slug is case-sensitive. Baseline is 3 because the schema covers everything, and the description does not compensate further.

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 clearly states the tool fetches Page Six section headlines, which is a specific verb and resource. It distinguishes from siblings like pagesix_article and pagesix_author by focusing on headlines. However, it does not explicitly mention the sibling alternatives or contrast with them, so it's close to a 5 but lacks direct differentiation.

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?

The description provides no guidance on when to use this tool versus alternatives like pagesix_news or pagesix_sections. It doesn't mention whether the agent should use this for a specific section or general headlines. The presence of a section parameter implies usage, but there is no explicit context or exclusion of alternatives.

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