create_contact_group

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

Annotations already indicate readOnlyHint=false (mutation) and destructiveHint=false, so the description's simple 'creates' is consistent but adds no additional behavioral context. No side effects, permissions, or constraints are mentioned, which is acceptable given the annotations provide basic safety info.

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 extremely concise at one sentence. It is front-loaded with the action and resource, but the minimal approach borders on under-specification. No wasted words, so earns a high conciseness score.

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?

Given the tool's simplicity (single parameter, no output schema), the description is mostly adequate. However, it lacks context about what a contact group is or any implications of creation, such as assignment capabilities. The openWorldHint suggests unknown side effects, but the description does not address them.

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?

With 100% schema coverage and the parameter 'name' already described as 'name of a group', the tool description does not add further meaning. The description is sufficient but does not compensate for any gaps.

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 verb 'creates' and the resource 'contact group', making the purpose understandable. However, it lacks differentiation from other create tools among siblings, such as 'create_contact' or 'create_contact_person', which is acceptable given the distinct resource name.

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 guidance is provided on when to use this tool versus alternatives like 'assign_contact_groups' or 'update_contact_group'. The description does not indicate prerequisites or context, leaving the agent without direction on appropriate usage.

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