zcell_list_sim_analytics_summary

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

Annotations already declare readOnlyHint: true and openWorldHint: false. Description reinforces 'Read-only' and specifies return content (total/used/active/inactive). Adds moderate value beyond annotations by clarifying the exact breakdown fields but lacks details like pagination or rate limits.

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?

Two tight sentences front-load the core purpose and read-only nature. No waste or repetition. The structure is optimal for an agent to quickly grasp the tool's function.

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 list tool with no output schema, the description adequately conveys what the tool returns (SIM count breakdown). It covers the essential behavioral aspect (read-only) and the specific fields. However, could mention that results are for the entire tenant and possibly that the query parameter allows filtering. Overall complete enough given low complexity.

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 description coverage is 100% for the one optional parameter 'query'. Description does not mention the parameter; the schema already provides a detailed explanation. With full schema coverage, baseline 3 is appropriate; no extra meaning added by description.

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?

Description clearly states it lists Zscaler Cellular SIM status summary with specific breakdown (total/used/active/inactive). Verb 'List' and resource 'SIM status summary' are specific, and it distinguishes from sibling tools like zcell_list_sim_usage_* by focusing on summary counts rather than per-day or per-country usage.

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?

Description implies usage for getting SIM count breakdown and states read-only, but does not provide explicit when-to-use guidance or exclude alternatives. Among siblings, there are many list tools, but no direct mention of when to prefer this over others like zcell_list_sim_usage_by_*.

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