arvan_s3_create_bucket

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

Annotations (readOnlyHint=false) indicate mutation, but the description does not disclose any behavioral traits beyond the basic create. It does not mention idempotency, error scenarios (e.g., bucket already exists), or side effects. The description adds minimal transparency over the annotation.

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 very short (one sentence plus acl clarification), which is efficient and front-loaded. However, it could benefit from a more structured format (e.g., listing parameters, behavior).

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 two-parameter create tool, the description covers the basic purpose and one parameter's options. But it lacks information on success/failure responses, prerequisites, or region requirements. Adequate but with clear 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. It adds meaning for the `acl` parameter by listing allowed values, but does not explain the `bucket` parameter (e.g., naming rules, region implications). Thus, partial value.

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 'Create a bucket' with a specific verb and resource. However, it does not differentiate from sibling S3 tools like `arvan_s3_delete_bucket` or `arvan_s3_list_buckets`, so the purpose is clear but not uniquely positioned.

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 alternatives. The description only says 'Create a bucket' without mentioning prerequisites, alternatives, or context such as when the bucket already exists or when to use other bucket operations.

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