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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so safety is covered. The description earns credit beyond that by naming the three backup categories, listing the returned fields with their unit (epoch ms), and explicitly disclaiming restore/delete capability. Pagination or result-size behavior is not disclosed.

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?

Two short sentences, front-loaded with the resource and scope, then the field list, then the capability disclaimer and raw endpoint. No filler and no repetition of the schema.

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?

With no output schema, the description carries the burden of describing returns and does so by listing the fields and their time unit, plus a clear capability boundary. It is close to complete for a single-parameter read tool; only pagination/volume behavior is absent.

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?

Only one parameter (environment_id) exists and its schema description already covers 100% of the semantics, including where to obtain the UUID. The description adds nothing about the parameter, so the baseline 3 for fully schema-covered parameters applies.

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 names the exact resource ('The backups of one environment') and scopes it to manual, scheduled and system backups, then enumerates the returned fields (id, name, note, type, creation time). That is concrete enough to separate it from kinsta_create_manual_backup. It loses a point only because the operation verb is implied rather than stated.

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?

'Backups cannot be restored or deleted from here' establishes a boundary and implies where such actions live, which is useful negative guidance. However, it never states when to choose this tool over siblings such as kinsta_create_manual_backup, so the guidance remains implied rather than explicit.

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