list_departments

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

With no annotations, the description carries the burden, and it does at least disclose 'Calls GET /departments', which strongly implies a read-only, side-effect-free operation. However, it does not mention auth, authorization scope, pagination defaults, or anything about the response shape, so it only covers the most basic behavioral signal.

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 short and front-loaded: purpose, HTTP method, and parameter placement are each stated in a compact sentence. The initial 'List departments' is somewhat redundant with the tool name, but the whole definition avoids fluff and stays efficient.

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?

Without annotations, the description gives just enough to attempt a call: an HTTP method and parameter destination. But it is incomplete because it does not clarify what scope of departments this returns, how it differs from list_account_departments, or which route IDs apply. The output schema covers response shape, but the deciding contextual information about scope and alternatives is absent.

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 0% and all parameters are unconstrained generic objects, so any added meaning is valuable. The description tells the agent to put route IDs in path_params and filtering/pagination/sorting/include values in query_params, which is meaningful compensation for an empty schema. It does not explain the unused body param, a minor gap.

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 a specific verb and resource, 'List departments', and even names the exact endpoint via 'GET /departments'. It is not self-contradictory, but it fails to differentiate from the sibling list_account_departments, so an agent cannot tell whether this returns global or account-specific departments.

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 guidance about when to use list_departments instead of alternatives such as list_account_departments or get_department. The only usage-related text is mechanical ('Put route IDs in path_params...'), which does not help select between tools.

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