defender_get_machine_group_exposure_score

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

Annotations already mark this as read-only and non-destructive, so the description adds no new safety context. The description states it retrieves scores but does not disclose the return structure (e.g., list of group objects with score fields) or any potential access requirements, which are not covered by annotations.

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, concise sentence that communicates the essential action and resource. All information is front-loaded with no redundant or filler words, making it highly 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?

Given the tool's simplicity (no parameters, no output schema, read-only annotations), the description is minimally sufficient. However, it does not specify the exact format of the returned data, such as whether it returns a list of group identifiers with numeric scores, which could leave ambiguity for an agent without additional context.

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 tool has zero parameters, and the schema coverage is 100%. Per the baseline for 0-parameter tools, a score of 4 is appropriate; the description does not need to explain parameters that do not exist.

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 states a specific verb ('Get') and resource ('exposure score of each device group'), clearly indicating a per-group listing. It could more explicitly distinguish from defender_get_exposure_score (which likely returns a global score) but the name and description make the primary purpose unambiguous.

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 defender_get_exposure_score or defender_get_secure_score. An agent is left to infer that this is for per-group scores, but there is no explicit differentiation or condition for selection.

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