get_whats_new

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

No annotations are provided, so the description carries full burden for behavioral disclosure. It only mentions fetching from AWS What's New API but does not disclose rate limits, authentication requirements, or error handling (e.g., invalid month format or no data). This leaves significant transparency gaps.

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 extremely concise, with a clear one-line purpose followed by a parameter specification. Every sentence is necessary and the structure is front-loaded.

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?

Given the presence of an output schema (evidenced by context signals), the description does not need to explain return values. However, it lacks mention of potential errors or limitations (e.g., what happens if the month has no news or the format is wrong), making it somewhat incomplete for a real-world usage scenario.

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%, meaning the schema only defines the parameter as a string without description. The description adds the required format (YYYY/MM) and an example, which provides meaningful guidance beyond the schema.

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 news from AWS What's New API for a specific month, using a specific verb and resource. With no sibling tools, differentiation is not required, and the description is unambiguous.

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 indicates the tool is for fetching news for a specific month, but lacks guidance on when to use alternatives or when not to use it. Since there are no siblings, the need for exclusion is minimal, but still no explicit usage context.

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