zms_get_agent_version_statistics

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

Annotations already declare readOnlyHint=true, and the description adds a redundant 'Read-only' but also contributes 'curated aggregate view' and the ZSCALER_CUSTOMER_ID requirement. While useful, it does not explain return structure, pagination, or how the search parameter affects behavior, so the added transparency is moderate.

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 compact and front-loaded: it opens with a clear summary, then provides the key behavioral note and auth requirement. Every sentence contributes useful information, with no filler.

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 aggregate statistics tool, the description covers purpose, result type, and auth. However, the optional 'search' parameter is left unexplained, and without an output schema, the agent has limited understanding of the exact response format or edge cases.

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 is one optional 'search' parameter with 0% schema description coverage. The description does not mention or explain this parameter at all, so the agent gets no guidance on what filtering or behavior 'search' controls beyond the schema's minimal 'Search' label.

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 tool returns ZMS agent version statistics as a curated aggregate view, specifically the distribution of agent software versions across the fleet. This distinguishes it from sibling tools like zms_get_agent_connection_status_statistics, which targets connection status, and zms_list_agents, which lists individual agents.

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 provides clear usage context: it is useful for spotting outdated agents and explicitly requires ZSCALER_CUSTOMER_ID. However, it does not explicitly mention when not to use this tool or name alternative tools, so it falls short of full 'when/when-not' guidance.

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