get_article_groups

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

With no annotations provided, the description carries the full burden for disclosing behavioral traits. It does not explicitly state that this is a read-only operation, nor does it mention permissions, pagination, error behavior, or return format. The only added context is the definition of 'article groups,' which is helpful but insufficient for a fully transparent description.

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 concise and well-structured: a clear one-line purpose, a brief clarification of the key concept, and a compact parameter spec. Every sentence earns its place with no redundancy or filler.

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 simple read-only getter with one parameter, the description covers the essential purpose, parameter format, and default. It does not describe return value structure or potential errors, but given the simplicity and no output schema, it is reasonably complete. It loses one point for not clarifying how it differs from sibling tools, which would help contextual selection.

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 input schema provides only the parameter name and type (string/null) with no description. The description compensates fully by specifying the date format (YYYY-MM-DD), that it is optional, and the default behavior (defaults to today). This is exactly the semantic information an agent needs 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's function with a specific verb ('Get') and resource ('main articles groups') scoped to a date. It also explains what article groups are, adding clarity. However, it does not explicitly differentiate from sibling tools like get_articles_by_date or get_categories, so it lacks direct sibling comparison.

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 implies usage when you need article groups for a date, but it gives no explicit guidance on when to choose this tool over alternatives or any prerequisites. There is no mention of exclusions or alternative tools, so the agent is left to infer context solely from the purpose.

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