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

Annotations already declare destructiveHint=false, so the agent knows the operation is non-destructive. The description's 'Data is preserved' reinforces this but adds little beyond the annotation; it does not disclose permissions, side effects on the deployment, or reattach behavior.

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 action and immediately followed by the key data-preservation clarification. Every sentence earns its place for a tool of this simplicity.

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 one-parameter tool with no output schema, the description covers the operation and its non-destructive outcome, and annotations cover safety. However, it omits parameter semantics and usage context, leaving gaps in an otherwise simple definition.

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 coverage is 0% and the single required volumeId has no description in the schema. The description mentions 'the volume' but gives no format, source, or example for the identifier, failing to compensate for the missing schema documentation.

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 (detach) and resource (volume), and scopes the action to 'its current deployment.' The phrase 'Data is preserved' implicitly distinguishes it from a delete operation, but no sibling tool is named explicitly, so it falls short of the highest clarity tier.

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 explicit when-to-use, when-not-to-use, or alternative reference. The action 'detach' implies use when removing a volume from a deployment without data loss, but the description provides no routing guidance to siblings like nexusai_volume_delete or nexusai_volume_attach.

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