get_device_info

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

With no annotations, the description bears full responsibility for disclosing behavior. It states the operation is a 'Get' (implying read-only) but does not explicitly confirm no side effects, no special permissions, or any latency concerns. It also does not mention error handling or that it aggregates multiple sources, leaving behavioral traits unspecified.

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, front-loaded sentence that states the action and resource first, then lists the specific fields. There is no fluff or redundancy; every word contributes to the tool's purpose.

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?

For a parameterless tool with an existing output schema, the description fully specifies what the agent can expect: model, hostname, software version, and operating mode. This covers the tool's intended scope without missing essential details. The output schema handles return formatting, so the description is complete.

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?

There are zero parameters, so the schema trivially covers 100% of them. The description adds no parameter-specific information, but none is needed. The baseline for a 0-parameter tool is 4, which applies 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?

The description clearly states the action 'Get' and the resource 'WLAN Pi device identity', then enumerates the specific attributes returned (model, hostname, software version, operating mode). This distinguishes it from siblings like get_device_model and get_device_mode, which are more granular, making the 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 given on when to prefer this combined tool over the granular get_device_model or get_device_mode, nor any exclusion criteria. The description implies a one-stop query for identity, but it does not explicitly state when this is the better choice or when to use alternatives.

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