get_top_pages_tool

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

With no annotations, the description carries the full behavioral burden. It does disclose the mutual-exclusion rule and the default retention window (30 days), which is useful. It stops short of stating auth requirements, rate limits, or error behavior when both or neither zone identifier is passed, so it only partially covers the gap left by absent annotations.

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?

Front-loads the purpose, then the key constraint, then structured Args and Returns sections. The parameter lines duplicate defaults already present in the schema, but since the schema has zero descriptions this repetition is justified rather than wasteful.

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?

An output schema exists, so the agent does not need return values spelled out, and the description provides a brief one anyway. It covers all parameters, defaults, and the exclusivity constraint; only edge-case behavior (neither identifier, invalid format) is unaddressed, which is a minor shortfall.

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%, so the description must compensate, and it largely does: it documents all five parameters with formats (32-char hex zone ID, domain-style zone name, ISO dates) and defaults. The one gap is that 'limit' is only described as 'Number of results' with no bounds or max, but overall this adds substantial meaning beyond the bare 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?

States a specific verb and resource ('Get top pages by request count'), which cleanly distinguishes it from analytics siblings like get_zone_analytics_tool and get_traffic_by_country_tool. It does not, however, explicitly name or contrast against any sibling, which holds it below a 5.

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 'Provide either zone_id or zone_name, not both' constraint is genuine usage guidance about parameter exclusivity. However, it gives no guidance on when to prefer this tool over get_zone_analytics_tool or get_traffic_by_country_tool, and does not say what happens if neither identifier is supplied.

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