Get Device Model Details (Slots and Modules)

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

readOnlyHint=true already signals that this is a safe read, so the description only needs to add scope, which it does: it reveals that empty slots are reported as empty and that module descriptions come from Packet Tracer. It does not discuss failure modes (for example, an unknown device name), but that is a minor gap given the annotations and the output schema.

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 in the first sentence, and the examples follow as concrete usage illustrations. The examples are useful rather than filler, though the leading sentence is long and could be split for faster scanning.

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?

An output schema exists, so return values need not be explained, and the single parameter is fully documented in the schema. Naming the follow-up tool add_module_to_device closes the workflow loop; only edge-case behavior (invalid device name, models with no slots) is unaddressed.

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 there is a single required parameter, so the schema already carries the parameter meaning (device display name such as 'Router0'). The description only implies it through "a device's", 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 states a specific verb and resource: it shows a device's expansion slots (including whether a module and its ports are installed, or the slot is empty) plus all module models the device supports. This is clearly distinct from the sibling get_device_models, which enumerates models rather than a single device's slots.

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?

"Use before add_module_to_device" gives a concrete workflow trigger and names the follow-up tool, and the three example questions show the situations this tool answers. There is no explicit statement of when not to use it, but the context is unambiguous.

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