ncloud_datafence_list_buckets

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

Annotations already declare readOnlyHint=true, so the safe-read nature is covered. The description adds the permission caveat that a sub account may lack Object Storage access, which is real added behavioral context, but it stops short of describing scope limits, pagination, or what 'available' means (all buckets in the account vs. only Datafence-linked ones).

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?

A single front-loaded sentence with the core action first and the caveat second; nothing is redundant or padded. It is efficient, though the parenthetical is slightly compressed rather than fully integrated.

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 no-parameter, read-only listing tool with no output schema, the description covers the essential action and one important operational caveat. Missing only the finer points of scope (which buckets count as 'available') and result handling.

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 tool takes zero parameters, so the baseline is 4. The schema is empty and there is nothing for the description to clarify about argument semantics.

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?

States a specific verb and resource (List Object Storage buckets) and scopes it to the Datafence service, which separates it from generic siblings like ncloud_list_buckets or ncloud_ncs_list_buckets. It does not, however, explicitly name or contrast with those siblings.

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 parenthetical notes a prerequisite ('a sub account may need Object Storage permission'), which is a useful precondition, but there is no statement of when to prefer this over other bucket-listing tools or what context triggers its use. Usage is implied rather than spelled out.

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