defender_get_machine_actions

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

Annotations already cover readOnlyHint=true and destructiveHint=false, so the description only needs to add context beyond that. It does so by noting the tool shows actions taken by anyone and that it is the way to verify containment status. It doesn't discuss paging behavior or response shape, but those are less critical given the annotations and schema-covered parameters.

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 core behavior is front-loaded, followed by filter examples and then a use case. It is dense and every clause contributes information, though the final 'so it is how to check whether a containment still stands' is phrased a bit informally.

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 read-only annotations, fully documented parameters, and no output schema, the description provides enough context: what actions are returned, what fields appear, how to filter, and when an agent should use this tool. Nothing essential for selecting and invoking it is missing.

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 description coverage is 100%, so the baseline is a 3. The description adds value with concrete OData filter examples ('machineId eq \'<id>\'', 'type eq \'Isolate\''), giving agents usable syntax beyond the schema's generic 'OData $filter expression'.

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?

States a specific verb ('List') and resource ('response actions taken on devices'), enumerates the action types (isolation, release, scans, quarantine, packages, live response) and the fields returned (status, requestor, comment, times). The plural 'actions' and the 'List' wording clearly differentiate it from the sibling tool defender_get_machine_action_by_id.

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?

Gives a concrete use case: 'it is how to check whether a containment still stands'. Also provides practical filter examples with machineId and type. It does not explicitly name alternatives or state when not to use it, so it stops slightly short of full exclusion guidance.

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