Добавление поддоменов к S3-хранилищу

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

The description reveals that each subdomain gets a status (success, empty_cname, duplicate, failed), which is beyond what annotations provide. It also implies the tool performs a write operation (adding subdomains) and does not contradict annotations. It doesn't mention side effects like idempotency or potential partial failures, but the status list gives useful behavioral insight.

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 two concise sentences. The first states the core action, the second lists return statuses and gives a clear next step. No redundant information, well front-loaded.

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 no output schema, the description adequately covers the return statuses and follow-up action. It could be slightly more complete by specifying the exact response structure or mentioning possible error conditions, but the information provided is sufficient for an agent to understand the tool's behavior in context.

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 already describes both parameters (bucket_id and subdomains) with detailed examples, achieving 100% coverage. The description adds no additional parameter semantics beyond the schema, so a 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 a specific verb ('Добавляет' - adds) and resource (subdomains to S3 bucket), distinguishing it from siblings like add_bucket_subdomain_certificate or delete_bucket_subdomains. It also lists expected return statuses, making the purpose unambiguous.

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?

It provides clear context (adding subdomains to S3) and explicitly mentions the follow-up action of issuing SSL via add_bucket_subdomain_certificate, which guides the agent on next steps. However, it doesn't explicitly state when not to use this tool or contrast with alternatives like delete_bucket_subdomains.

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