umbrella_domain_security_score

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

With no annotations, the description carries the full burden of behavioral disclosure. 'Get' signals a read-only operation and the listed signals indicate the kind of data returned, but the description does not address response shape, error cases, or any special behavior. This is adequate for a simple lookup but not richly transparent.

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 a single front-loaded sentence that names the action, resource, and representative output signals without wasted words. The parenthetical examples and 'etc.' efficiently convey the scope of returned data.

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 tool with only one required parameter and no output schema, the description is minimally viable: an agent can infer what to pass and generally what to expect. However, it lacks output structure details and does not help an agent choose between this tool and the similarly named domain_risk_score sibling, leaving meaningful context gaps.

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 for the undocumented domain parameter. It only restates that the tool works 'for a domain', adding little beyond the property name. It does not specify expected format, such as whether a full URL, bare domain, or subdomain is acceptable.

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 a clear action ('Get') and resource ('detailed security scoring signals for a domain'), with concrete examples such as DGA score, perplexity, entropy, and Secure Rank. It does not explicitly distinguish itself from the closely named sibling tool umbrella_domain_risk_score, so it stops short of full differentiation.

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 metric examples imply this tool is for domain security scoring use cases, but the description does not explicitly say when to use it instead of related siblings like umbrella_domain_risk_score or umbrella_domain_categorization. There is no 'when not to use' or alternative-routing guidance.

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