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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds that results include each user's department role, which is useful output context, but it omits pagination behavior, permissions requirements, and return shape details.

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 compact sentence with no wasted words and the key scope (one department, department role) is front-loaded. It is efficient, though its brevity contributes to gaps in usage guidance.

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 read-only list tool with full schema coverage and safety annotations, the description is minimally adequate. It still leaves out routing versus gocanvas_list_users, pagination expectations, and any sense of result volume or format.

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 100%, and the department_id parameter is fully documented in the schema, including its source from gocanvas_list_departments. The description adds no further parameter semantics beyond indicating that exactly one department is involved, so the baseline of 3 is appropriate.

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 names a specific resource (users in one department) and adds useful scope detail (department role), making the core purpose clear. However, it does not explicitly differentiate this from sibling gocanvas_list_users or state the list verb beyond what the title already provides.

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 explicit guidance on when to use this tool versus gocanvas_list_users, gocanvas_get_user, or gocanvas_list_departments. Usage is only implied by the required department_id parameter in the schema.

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