umbrella_top_categories

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

With no annotations, the description carries the full burden and only indicates a non-mutating 'report'. It does not disclose sorting semantics, timezone/inclusivity of the range, pagination behavior, whether results are blocked vs allowed categories, or what the response shape is.

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 sentence with no wasted words and puts the core intent up front. It is concise, though it leaves space for more useful detail.

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 report tool with 5 parameters, no output schema, and no annotations, the description is too thin: it doesn't explain paging, the additionalParams escape hatch, or the return structure. An agent would have to infer how limit/offset interact and what 'top' means.

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 100%, so the input schema already explains from, to, limit, offset, and additionalParams. The description adds no parameter-level detail beyond the phrase 'over a time range', which matches 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 states the resource (content/security categories) and the aggregation intent (most-requested over a time range), which distinguishes it from sibling top-destination or top-domain report tools. However, it is phrased as a noun phrase rather than an actionable verb, and it doesn't explicitly differentiate by 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 is given about when to choose this tool over sibling reporting tools such as umbrella_top_destinations or umbrella_top_most_seen_domains. The time-range mention is a factual scope, not a usage rule.

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