Read a Roblox Weekly Recap

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

Annotations already declare readOnlyHint, openWorldHint, and destructiveHint, covering the safety profile. The description adds useful behavioral context: recaps are published every Friday, week steps backward through the archive, and list returns an archive index – details beyond the structured 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?

Three sentences, all substantive: scope, parameter modes, and a recommended workflow. The most identifying information is front-loaded, and there is no filler or repetition of schema details.

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 no output schema and five optional parameters, the description gives enough context to select and invoke the tool correctly. Minor gaps exist – max_tokens is undocumented and the response shape is not described – but these are secondary for a straightforward read-only recap tool.

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 80%, setting a baseline of 3. The description adds meaningful parameter semantics by explaining week offsets with examples ('0 = newest, 1 = the week before'), clarifying before as a jump to a past date, and defining list as the archive index. This goes beyond what the schema alone provides.

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?

Description opens with 'Read any Roblox Weekly Recap, current or historical' – a specific verb and resource. It also summarizes the recap contents (betas, engine updates, Marketplace and Studio changes), which clearly distinguishes it from sibling search and list 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?

It provides a concrete workflow: 'To find when a specific feature or regression landed, list the archive and read the recaps around that date.' It also explains when to use week, before, and list. It doesn't explicitly name alternatives or state exclusions, so it just misses the bar for a 5.

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