rhino_group

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

Annotations already indicate that this is not a read-only operation (readOnlyHint false) and not destructive (destructiveHint false). The description adds no additional behavioral context, such as whether grouping modifies objects, is reversible, or has side effects. It relies entirely on 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, efficient sentence with no wasted words. It front-loads the core action and includes the optional name detail, which is directly relevant.

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 grouping tool with an output schema and supportive annotations, this minimal description is adequate. However, it could mention that grouping is distinct from joining objects or provide a note about how groups behave, but these are not critical 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?

The schema provides clear descriptions for both parameters (guids and group_name). The tool description adds no parameter information, but the schema coverage is sufficient, so the baseline score of 3 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 clearly states the action (group objects) and the optional naming aspect. It's specific enough to distinguish from rhino_ungroup, though it doesn't explicitly differentiate from similar tools like rhino_join.

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?

There is no information about when to use this tool versus alternatives, no prerequisites, and no context about grouping semantics. Sibling tools like rhino_ungroup or rhino_join exist but the description offers no guidance.

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