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

Annotations already provide readOnly/openWorld/idempotent safety signals, and the description adds that matching occurs against CVE description text with an optional date range. It doesn't mention pagination, result format, or rate limits, but with annotations covering the safety profile this is acceptable.

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?

Single sentence that front-loads the core operation and packs the optional date range and match target into one compact phrase. No wasted words.

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 simple read-only search tool, the description plus schema gives an agent enough to call it correctly: keyword is required, optional dates and limit are documented, and the purpose is clear. No output schema exists, so a brief mention of the result shape would slightly improve completeness.

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 covers 100% of parameters with useful descriptions for keyword, limit, and date bounds, so the description doesn't need to repeat them. It adds minor clarification that keyword targets description text, but no syntax or format details beyond the schema.

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: free-text CVE search with optional date range, and clarifies the match target is CVE description text in NVD. This distinguishes it from sibling tools like cve_lookup, cve_recent, and cve_search_by_vendor without needing to open their schemas.

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?

The description implies use for keyword-based description searches and mentions date-range filtering, but it does not explicitly state when to use this tool instead of cve_search_by_vendor or cve_lookup. No exclusions or alternative routing are provided.

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