create_device_group

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

Annotations already declare readOnlyHint=false and destructiveHint=false, so the description does not need to restate mutation. It adds the auth prerequisite 'requires write permission', which is useful context. However, it does not disclose behavioral details such as duplicate-name handling, return values, or hierarchy side effects. The description does not contradict annotations.

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 a single sentence with the action and resource front-loaded)Skip any filler. The permission note is appended efficiently. Every word contributes to the message.

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 5 parameters, one required, a nested object, and no output schema, the description is too minimal. It does not explain the structure of custom_properties, the syntax of applies_to, or how parent_id affects hierarchy. An agent would need external knowledge to use the full parameter set correctly.

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 100%, so the baseline is 3. The description adds no additional meaning about parameters such as applies_to, parent_id, or custom_properties. It relies entirely on the schema's brief field descriptions.

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 states a specific verb and resource: 'Create a new device/resource group'. This clearly distinguishes it from sibling tools like update_device_group, delete_device_group, and create_collector_group. The permission note does not obscure the core purpose.

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 description gives no explicit guidance on when to use this tool versus alternatives. It does not mention that this is for creating device groups as opposed to updating or deleting them, nor does it compare with other group creation tools. Usage is only implied by the verb and resource name.

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