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

Annotations already declare readOnly, idempotent, closed-world, non-destructive, so safety is covered. The description adds one genuine piece of context—results are scoped to the linked Market Brew account—which is real value. It stops there, saying nothing about what the statistics contain or how freshness/pagination works.

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?

Two short sentences with no bloat, which is structurally clean. However the first sentence is pure filler and the substantive account-scoping constraint is buried in the second, so it is not front-loaded with useful information.

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?

There is no output schema, so the description carries the burden of conveying what comes back—yet it never says what a 'content-gap statistic' includes. For a stats-retrieval tool with nested query objects and nearby gap-listing siblings, more orientation is needed.

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% and the single optional 'query' filter is documented in the schema ('websiteId or serverHost'), so baseline 3 applies. The description adds nothing about filter semantics or defaults beyond what the schema already states.

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 essentially restates the title verbatim ('Use this when the user asks to get Launchpad content-gap statistics'). It names the resource but adds no distinguishing detail versus siblings like list_launchpad_keyword_gaps and list_launchpad_prompt_gaps. This is tautology rather than an independent statement of purpose.

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 trigger is circular—'use this when the user asks to get Launchpad content-gap statistics' just echoes the tool's own name. No when-to-use vs. when-not, and no mention of the closely related launchpad gap-listing siblings that an agent would need to choose between.

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