list_ticket_departments

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

Annotations already declare readOnlyHint and idempotentHint, so the description doesn't need to restate safety. It adds the useful cross-reference to create_ticket, but doesn't disclose any additional behavior such as authentication needs, rate limits, or output 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 tight sentence that front-loads the action and resource, then adds the key relationship to create_ticket. Every word earns its place with no filler.

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 zero-parameter, read-only list tool, this description is complete: it explains what is listed and why the agent would call it. The annotations cover safety and idempotency, and the department_id reference gives the agent the essential output contract.

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 is empty and schema coverage is 100%, so there are no parameters to document. The description adds conceptual value by explaining that the output is the source of department_id for create_ticket, which corresponds to the baseline 4 for zero-parameter tools.

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 uses a specific verb and resource: 'List support departments a ticket can be filed under.' It also names its role as the department_id source for create_ticket, which clearly distinguishes it from sibling ticket tools like list_tickets or create_ticket.

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 explicitly frames this tool as the source for department_id when creating a ticket, giving clear context for when to call it. It doesn't discuss exclusions or alternatives, but no sibling tool lists departments, so that omission is not material.

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