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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the description need not repeat safety. It adds value by specifying the analytics types (views, clicks, submissions) and 'private', but it does not mention response format, pagination, or any rate limits. No contradiction.

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?

A single, efficient sentence that front-loads the action and scope. It conveys the key analytics domains without wasted words. Could add a tiny bit more context but remains well-structured.

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 it is a read-only analytics tool with 3 parameters and an output schema, the description is minimally adequate. It names the resource but does not mention the required parameters or how days affects the query. The output schema covers return values, which helps, but parameter context is lacking.

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 carries the burden, but it only mentions 'selected landing page' which maps to landing_project_id. The other parameters (project_id, days) are not described; days is self-explanatory by name and default, but project_id's role is unclear. Partially compensates for the coverage gap.

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 'Retrieve private view, click, and submission analytics for a selected landing page.' clearly states the verb (Retrieve), the resource (view/click/submission analytics), and the scope (selected landing page). It distinguishes this from other landing tools, though it does not explicitly differentiate from campaign_stats or other analytics tools.

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 for retrieving landing page analytics but does not specify when to use this tool versus alternatives like campaign_stats or landing.get_leads. It also does not state prerequisites such as an existing landing_project_id. Usage context is implied but not explicit.

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