nikto

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only states 'scanner', failing to mention potential destructive actions, network impact, or need for explicit consent. The consent parameter in schema hints at ethical concerns, but the description does not elaborate.

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 extremely short (one phrase), but this is under-specification rather than efficient conciseness. A meaningful description would include essential context without being verbose.

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 complex vulnerability scanner with required session management and consent, the description is grossly incomplete. No output schema, low schema coverage, and no behavioral details make it insufficient for correct tool selection and invocation.

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 only 25% (one param documented). The description adds no meaning to parameters like 'url', 'session_id', or 'consent'. The agent gets no help understanding how to use the session_id or the role of consent.

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 states 'Web server vulnerability scanner', which clearly indicates the tool's function and resource type. However, it lacks specificity to differentiate from sibling tools like nuclei or wafw00f, which also scan web servers. A 3 is appropriate for clear but generic purpose.

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?

No guidance on when to use this tool versus siblings, prerequisites, or conditions. For example, nikto can be intrusive and may require authorization, but the description omits all context for appropriate usage.

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