Get sys model

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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint and destructiveHint=false, so the safety profile is fully covered elsewhere. The description adds only the underlying endpoint path, with no note on device reachability requirements, auth, or failure behavior for a network-facing call.

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?

One short sentence with the endpoint and the returned value front-loaded; nothing is wasted. It is arguably too terse rather than bloated, which limits it to a 4.

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?

With no output schema, the description carries the burden of describing the return value, and 'the device model name' covers that at a minimal level. It says nothing about how the value is formatted or what happens if the device is unreachable, leaving gaps for an openWorld network tool.

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 takes zero parameters, so there is nothing for the description to clarify and no risk of misuse from undocumented inputs; a neutral mid score reflects that it neither helps nor hurts here.

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?

Names the specific resource it returns ('the device model name') and ties it to the /sys/model endpoint, which separates it from siblings like hdhomerun_get_sys_version, get_sys_features, and get_sys_copyright. It stops short of stating an explicit verb, but the resource is 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?

There is no guidance on when to call this versus hdhomerun_get_sys_version or hdhomerun_check_firmware_model, both of which an agent might plausibly confuse with a model lookup. The agent must infer usage entirely from the tool name.

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