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

With no annotations, the description carries the full burden of disclosing behavior, but it only mentions 'detection + hosting flag' without elaborating on what that means. It does not state whether the input is an IP address, domain name, or both; whether the tool performs external lookups; or what the output structure looks like. The behavior is too underspecified to set accurate expectations.

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 brief and front-loaded with a clear label. However, it is so terse that it sacrifices necessary information, and phrases like 'hosting flag' are ambiguous. It is not bloated, but it falls short of being genuinely useful.

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 has an output schema, the description does not need to describe return values, but it still omits essential context such as input semantics, use cases, and what differentiates a cloud provider from other hosting types. The tool is too poorly documented to be reliably invoked by an agent.

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 schema has one parameter 'q' with 0% description coverage, and the description never mentions 'q' or its meaning. An agent cannot tell whether 'q' expects a domain, IP, URL, or something else. The description fails to compensate for the absent schema documentation.

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 that the tool performs cloud provider detection (AWS/GCP/Azure/etc.) and returns a hosting flag. This is specific enough to distinguish it from most sibling tools focused on DNS, ASN, or IP lookups. However, it does not explicitly mention the input type (e.g., domain or IP), preventing a perfect score.

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 like infra_fingerprint, hosthunter, or ipwhois. There is no mention of prerequisites, recommended input types, or cases where the tool should not be used. Any usage context is only implied by the tool name and title.

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