usmagazine_news

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

With no annotations, the description carries the behavioral burden. It does disclose that the tool reads from a public RSS feed and returns fresh stories, implying a safe, read-only operation with no auth required. However, it does not describe the response shape, result count, or any limits, so coverage is partial.

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 short sentences with no filler. The main action and resource are front-loaded, and the second sentence adds the useful context of a public RSS feed. Every word earns its place.

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?

This is a simple zero-parameter tool with no output schema, so the description need not be extensive. It tells the agent what the tool returns and its source, but does not explain the structure of the returned stories or any pagination details. It is minimally viable but leaves some ambiguity for an agent expecting a precise return format.

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 tool has zero parameters, so the baseline is 4. The description reinforces that no inputs are needed by stating the tool simply returns the top stories. There is nothing further it needs to add about parameters.

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 states a clear verb-resource pair: 'Get Us Weekly top stories.' It adds the source ('public RSS feed') and freshness, which gives a concrete sense of the tool's purpose. However, it does not explicitly distinguish itself from sibling tools like usmagazine_headlines or usmagazine_sections, so it stops short of full 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 gives no guidance on when to use this tool versus alternatives such as usmagazine_headlines, usmagazine_article, or usmagazine_sections. The only implied usage is 'when you want top stories,' but no exclusions or alternative routes are mentioned, leaving an agent to guess among similarly named siblings.

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