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

Annotations already declare readOnlyHint and idempotentHint, so the safety profile is covered. The description adds that results are 'most upvoted' and filterable by period/category, but it does not disclose pagination behavior, tie-breaking, or any other operational detail beyond the schema.

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 one focused sentence that front-loads the resource and immediately states the filtering dimensions. There is no filler, repetition, or ambiguity-added wording.

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 read-only tool with zero required parameters, full schema coverage, an output schema, and safe annotations, the description is largely complete. A minor gap is that it does not reference sibling tools like get_launch_weeks to help with launch week semantics, but this is not essential for correct invocation.

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 each parameter already has descriptions, defaults, and enums where applicable. The description adds only a light gloss — 'last 30 days' for the month period and optionality for category — which meets the baseline but does not substantially exceed the schema's own documentation.

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 names a specific resource — 'SaaSCity's most upvoted launches' — and the exact scope dimensions: current week, last 30 days, all time, and optional category. This clearly distinguishes the leaderboard tool from sibling search/list tools like search_listings or get_listing.

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 gives a clear context for use: retrieve ranked launches by selecting a period and optionally a category. It does not explicitly name alternatives or state when not to use it, but the scope is unambiguous enough that an agent can decide appropriately.

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