groups_update

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

With no annotations provided, the description must fully disclose behavioral traits, but it only states the basic action. It does not mention any side effects, permission requirements, uniqueness constraints, or what happens to the old name, leaving the agent without important operational context.

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, front-loaded sentence with no wasted words. It clearly states the action, the resource, and the specific attribute being updated, achieving maximum conciseness while remaining unambiguous.

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?

The tool is simple with only two required parameters fully described in the schema. However, since there is no output schema and no annotations, the description could benefit from noting return behavior or side effects. The lack of such context makes it adequate but not complete for a mutation tool.

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 input schema has 100% coverage for both parameters (id and name), so the schema already documents their meaning. The description adds no additional parameter semantics beyond what is already in the schema, which is the baseline 3 according to the rubric.

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 'Update a group's name' uses the specific verb 'Update' with a clear resource ('group') and the specific field being changed ('name'). This distinguishes it from sibling tools like groups_create, groups_delete, and groups_info, which have different purposes.

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 implies usage but provides no explicit guidance on when to use this tool versus alternatives, prerequisites, or exclusions. The narrow scope ('update a group's name') makes usage self-evident, but it lacks the explicit alternative/context statements seen in higher-quality descriptions.

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