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

Annotations already declare readOnlyHint, openWorldHint, and idempotentHint, covering safety and idempotency. The description adds useful context about how it works (combining EPSS with criticality) and data sources (NVD, OpenCVE, AWS pricing), which helps the agent understand the tool's behavior beyond the annotations. No contradictions detected.

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 three sentences: a role-based hook, a concise input/output statement, and a use-case sentence. Each sentence adds unique value, and there is no redundant or filler content. It is front-loaded with the core purpose and efficiently structured.

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 presence of an output schema and strong annotations, the description covers the essential operational aspects: purpose, inputs, outputs, and use case. It could be slightly more complete by mentioning when not to use it or comparing to alternatives, but overall it is sufficient for a tool of moderate complexity.

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 provides 100% coverage for all four parameters, including descriptions for cveIds, awsServices, maxResults, and async. The description mentions the inputs but does not add significant meaning beyond the schema. The role of awsServices in asset criticality is already implied by the schema description, so baseline 3 is appropriate.

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 function: prioritizing unpatched CVEs by combining EPSS exploitability scores with cloud asset criticality. It specifies the input (CVE IDs and AWS service types) and output (ranked patching order with risk scores and cloud impact), and the unique combination of EPSS with asset criticality distinguishes it from sibling tools like cve_security_lookup or vuln_exploitability_forecast.

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 context by stating it is 'Ideal for vulnerability management and cloud security posture improvement,' which indicates when to use it. However, it does not explicitly mention alternatives or exclusion criteria compared to other vulnerability tools, so it falls short of a 5.

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