device_status

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

Annotations already declare readOnlyHint=true, and the [READ] tag reinforces it without contradiction. The description adds genuine value by enumerating the four returned status values, which matters since there is no output schema. No auth or rate-limit caveats are mentioned.

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?

Purpose is front-loaded in the first line, followed by a compact Args block. No filler sentences; every line maps to a parameter or the core 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 simple read-only, single-device lookup with no output schema, the definition covers purpose, all parameters, and the possible return states. Only minor gaps remain around auth/permission expectations and what fields accompany the status.

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?

With 0% schema description coverage, the description carries the full burden and documents all three parameters: serial with a format example, org_id with meaning and default-omission behavior, and target with its source. The 'target' explanation ('name from config') is a bit thin but functional.

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 ([READ]) and resource ('One device's availability status') and enumerates the possible states (online/offline/alerting/dormant). The singular 'one device' scope implicitly distinguishes it from the bulk sibling org_device_statuses, though it never names the alternative.

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 use this versus alternatives such as org_device_statuses. The only conditional text ('omit to use the target's default org') is per-parameter behavior, not usage routing, so the agent must infer selection from the name alone.

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