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

Annotations already indicate readOnlyHint=true and openWorldHint=true, so safety and external network behavior are covered. The description adds that it returns 'metadata and body paragraphs,' which clarifies the scope of data, but doesn't mention rate limits, authentication needs, or whether the article is paywalled. Given annotations, this is adequate.

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 a single, well-structured sentence that front-loads the key information. It is concise with no wasted words.

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?

The tool has an output schema, so the description needn't detail return values. However, it lacks information on how to use the tool (e.g., where to get the URL) and doesn't leverage the existence of the output schema to avoid redundancy. It is minimally complete for a simple fetch-by-URL tool but leaves gaps in usage context.

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 description coverage is 0% and there is no description for the 'url' parameter in the schema. The tool description does not explain the parameter at all, leaving the agent to infer it from the name. However, the description mentions 'one public Deadline article,' implying a URL is needed, but no format or example is provided. Baseline 3 given one parameter and the implicit context.

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 (retrieve, implied) and resource (one public Deadline article), and specifies what data is returned (metadata and body paragraphs). It's clear what the tool does, but it doesn't differentiate from siblings like deadline_headlines or deadline_author beyond the resource name.

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?

No guidance on when to use this tool versus alternatives such as deadline_news or deadline_headlines. While the tool name suggests it fetches a single article, the description doesn't explicitly state that it requires a URL from another tool (e.g., deadline_headlines) or when an agent should choose this over other article retrieval tools.

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