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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so the safety profile is covered. The description adds useful behavior: results are ranked by upvotes and the valid week range spans all history. It does not add pagination, result size, or auth context, so it earns moderate but not rich credit above the 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?

A single sentence with the core action front-loaded, the example parenthetical placed where it is useful, and the scope caveat appended. No filler.

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?

With one required parameter, full schema coverage, an output schema, and complete read-only annotations, the definition covers what an agent needs to call it correctly. Minor gap: "full results" is not further characterized, but the output schema relieves that burden.

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 coverage is 100% and the schema already gives the "week-41-2026" example, so the description's inline example largely restates it. The only marginal addition is the "as in its URL" framing, which is a baseline-3 contribution.

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 one launch week's full results") plus the ranking criterion ("ranked by upvotes") and the scope ("any week since MakerRadar began"). This also implicitly separates it from the live-week sibling list_current_launches.

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 phrase "not only the live one" tells the agent this tool serves historical weeks, which is the key routing decision against list_current_launches. It stops short of naming that sibling explicitly or stating exclusions, so it is clear context rather than a full when/when-not guide.

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