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

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is covered. The description adds meaningful domain behavior: the summary compares confidence with last week, shows a trend, includes blockers from the past seven days, and is the same view the Owner receives each Friday. It does not add auth or rate-limit details, but those are not necessary for a read-only tool with an output 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 two sentences, front-loaded with what the tool returns and followed by concrete usage examples. Every clause adds useful information without redundancy.

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 the tool has one required parameter, full schema coverage, rich annotations, and an output schema, the description is complete enough for correct selection and invocation. It explains the summary contents and the intended use cases without needing to restate return values.

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 parameter's schema already documents that it accepts a full or partial initiative name with case-insensitive matching. The description adds no parameter-level detail beyond what the schema provides, so the baseline of 3 is appropriate.

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 ('Get') and resource ('weekly summary for one initiative in Genchi'), then enumerates the contents: confidence signal vs. last week, recent trend, and past-week blockers. This clearly distinguishes it from sibling tools like genchi_get_confidence and genchi_get_blockers because it is a composite weekly rollup, not a single-signal query.

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?

Provides clear use cases with example questions such as 'what changed this week' and 'give me the weekly update.' However, it does not explicitly state when to use this tool versus alternatives like genchi_get_confidence or genchi_get_blockers, so it lacks the exclusionary routing guidance that would merit a 5.

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