assess_security_posture

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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the description doesn't need to repeat those. It adds context about the scope of the assessment (policies, named lists, etc.) and the return contents, which is useful but not deep behavioral disclosure. No additional constraints like pagination or permission requirements are mentioned, so a mid-score is appropriate.

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 tightly packed: a one-line purpose, explicit usage guidance, alternative tool references, return value summary, and example. Every sentence earns its place with no redundancy or filler.

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 zero parameters, a read-only annotation, and a separate output schema, the description covers all necessary context: what the tool does, when to use it, what it returns, and how it differs from related tools. No gaps remain for the agent to operate effectively.

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 tool has zero parameters, so the baseline is 4. The description provides an example call with no arguments, clarifying that the tool takes no input. There is nothing more to explain beyond what the schema already shows (empty properties).

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?

Description clearly states the tool assesses overall DNS security posture with specific areas (policies, named lists, category filters, compliance, analytics). It distinguishes from sibling tools like investigate_threat and triage_security_insight by explicitly naming them as alternatives.

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?

Explicitly instructs to use for security audits and compliance reporting, and provides direct alternatives for active threat investigation and triage actions. This gives clear when-to-use and when-not-to-use guidance, referencing sibling tools by name.

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