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

Discloses important non-obvious behavior beyond the readOnly/idempotent annotations: results come from a cached catalog snapshot with no upstream cost, a CVE absent from KEV is a normal result rather than an error, and the response includes derived fields such as days remaining/overdue and triage tier. No contradiction with annotations exists.

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 dense and front-loaded, leading with the core operation and batch constraint before enumerating return details. The long list of returned fields is informative but somewhat redundant given an output schema exists, so it is slightly broader than strictly necessary.

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?

For a one-parameter, read-only, idempotent tool with an output schema, the description covers input limits, performance characteristics, non-error semantics for missing CVEs, and integration with cisa_search_kev's CWE filter. No critical operational detail appears 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?

The input schema already documents cveIds thoroughly, including pattern, min/max items, and whitespace/case normalization. The description reinforces batch semantics and the dependency-audit use case but does not add substantial new parameter-level meaning beyond that 100% schema coverage.

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 operation and resource: checking CVE IDs against the CISA KEV catalog in batches of up to 200. The description also differentiates this from cisa_search_kev by emphasizing status checking and downstream chaining through CWE IDs.

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?

Clearly frames when this is useful, such as checking a full CVE alias list from a dependency audit in one call, and notes the cached-snapshot/no-upstream-cost behavior. It does not explicitly enumerate when to prefer sibling tools, but the batch-checking focus and the chaining hint toward cisa_search_kev give adequate context.

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