Список поддоменов S3-хранилища

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

The description implies a pure read operation ('Возвращает все поддомены'), but the annotations set readOnlyHint to false, creating a direct contradiction. The description adds no clarifying behavioral details such as side effects, permissions, or rate limits, and the contradiction makes the tool's safety profile unclear.

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, well-structured sentence that front-loads the main action and enumerates the returned fields. Every word contributes to the understanding of the tool, making it concise and easy to parse.

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 simple list operation with one parameter, the description lists the returned fields, which is helpful, but it lacks details about pagination, error conditions, or the meaning of SSL statuses. More critically, the contradiction between the description and the readOnlyHint leaves the agent uncertain about potential side effects, reducing completeness.

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 only parameter bucket_id is fully documented in the schema with a description, so schema coverage is 100%. The tool description does not add any additional semantic context beyond what the schema already provides, thus the baseline score of 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 action (возвращает / returns) and the specific resource (поддомены, привязанные к S3-хранилищу), along with the precise fields returned. It distinguishes itself from sibling tools like add_bucket_subdomains and delete_bucket_subdomains by being the list operation.

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 explicit guidance on when to use this tool versus alternatives, nor does it mention any preconditions or exclusions. While the purpose is clear, there is no context about when to choose list_bucket_subdomains over related tools such as get_bucket or list_buckets.

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