CVE MCP Server

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It mentions fetching data and showing patch availability and affected products, but lacks details on rate limits, authentication needs, error handling, or response format. The description does not contradict annotations (since none exist), but it is insufficient for a tool with no annotation coverage.

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 appropriately sized and front-loaded, with the core purpose stated first, followed by a brief parameter explanation. It avoids redundancy and uses clear language, though the parameter section could be slightly more integrated into the flow.

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's moderate complexity (fetching advisories from multiple vendors), no annotations, and the presence of an output schema (which handles return values), the description is minimally adequate. It covers the purpose and parameter semantics but lacks behavioral context and usage guidelines, leaving gaps in 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 description coverage is 0%, so the description must compensate. It adds meaningful semantics by explaining the 'cve_id' parameter as a 'CVE identifier' with an example ('CVE-2021-44228'), which clarifies usage beyond the bare schema. Since there is only one parameter, this is adequate, though not exhaustive.

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 clearly states the tool's purpose: 'Fetch vendor security advisories for a CVE from Microsoft (MSRC), Red Hat, and Ubuntu. Shows patch availability and affected products.' It specifies the verb ('fetch'), resource ('vendor security advisories'), and scope (three specific vendors), but does not explicitly differentiate it from sibling tools like 'lookup_cve' or 'get_cve_summary'.

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 provides no guidance on when to use this tool versus alternatives. It mentions fetching advisories from specific vendors but does not indicate scenarios where this is preferred over other sibling tools (e.g., 'lookup_cve' or 'get_cve_summary'), nor does it specify prerequisites or exclusions.

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