zins_get_iot_device_stats

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

Beyond the readOnlyHint annotation, the description discloses the single current-state object shape, the presence of an `entries` breakdown, the lack of a time window, and the meaning of empty/zeroed results. This adds real behavioral context about return structure and edge cases that annotations alone couldn't convey.

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?

Four tight sentences front-loaded with purpose, then return structure, then operational semantics, and finally edge-case interpretation. Every sentence earns its place and nothing is wasted.

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 read-only tool with one trivial parameter and no output schema, the description comprehensively covers the return value shape, present-state semantics, and empty-result interpretation. There's little else an agent would need to know.

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 0%, so the description was expected to compensate, but it never mentions the `limit` parameter. However, with only one optional integer parameter carrying a sensible default of 50, the semantic gap is minor and the parameter name is self-explanatory — the description simply doesn't add value 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?

"Get IoT device statistics and classifications" pairs a specific verb with a concrete resource, and the follow-up details (total/IoT/user/server/unclassified counts plus per-classification entries) leave no ambiguity about what this tool returns. This clearly distinguishes it from sibling tools like zins_get_shadow_it_apps and zins_get_web_protocols.

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?

The description clarifies when this applies: "No time window — this reflects the present network state," and explains what an empty result means. It provides clear context for appropriate use, though it never explicitly names alternatives or states when not to use the tool.

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