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

Annotations already declare readOnlyHint and idempotentHint, so safety is covered; the description adds genuine behavioral context beyond that: results come newest-first and include the version ranges each CVE names. It does not mention pagination caps or what happens for an unknown product slug, which are the remaining behavioral gaps.

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, no filler: the first front-loads what is returned and in what order, the second disambiguates the filter values. Every clause carries information an agent would otherwise have to guess.

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 states the return shape (CVEs plus their named version ranges) and ordering, and covers the key filter semantics. Minor gaps remain: the 'affected_device' value is unexplained and pagination behavior is only in the schema, but nothing essential to a correct call is missing.

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%, so the baseline is 3, and the description earns above baseline by explaining the meaning of the two most consequential entry_kind values rather than just restating them. It leaves 'affected_device' (listed in the schema) undefined, which is a partial gap.

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 the resource precisely (CVEs recorded against a product) and adds scope and ordering (affected-version ledger, newest first, with version ranges). It implies a read/list operation distinct from a general CVE search, but never names a sibling, so differentiation is left to inference.

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 gives real guidance for choosing between entry_kind values ('affected' = product itself vulnerable, 'runs_on_platform' = vulnerable when running on it), which is the main decision an agent faces here. It offers no guidance on when to use this tool versus search_cves or lookup_cve, and no prerequisites or exclusions.

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