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

Annotations already declare readOnly/idempotent/non-destructive/closed-world, so safety is covered. The description adds genuinely useful behavior beyond annotations: result ordering (newest first) and the shape of returned fields (titles, summaries, dates, URLs). It omits pagination behavior given the limit parameter, which is a minor gap.

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 sentences, zero filler. Scope and ordering are front-loaded, filtering and return values follow. Every clause carries 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?

With no output schema, the description usefully enumerates returned fields and ordering, and annotations fully cover the safety profile. The only shortfall is the unexplained limit parameter and pagination behavior for a list 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 67% and the schema already documents kind (with values) and topic. The description restates those filterable fields and confirms both are optional, but adds no syntax or format detail beyond the schema; the limit parameter is undocumented in both places. Baseline 3 applies.

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 (List) and resource (Clarity Corner education library) with scope and ordering (newest first). It is clearly distinguished from the sibling tools by resource, though it does not explicitly contrast itself with search_answers, which could plausibly retrieve similar content.

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?

'Optionally filter by topic or kind' implies the filtering use case, but there is no statement of when to prefer this over search_answers or other retrieval siblings, and no exclusions or prerequisites. Usage is inferable rather than stated.

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