get_menstrual_cycle_summary

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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds nothing beyond that: the claim that date limits follow the official interface is opaque and gives no concrete constraint, format, or return behavior.

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?

Bilingual duplication and a meta sentence about being one-to-one with the official client consume space without informing the agent. The useful content is a single clause; the rest is filler that dilutes front-loading.

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 one-parameter tool with no output schema, the description should at least pin down the date format and what the summary contains. Instead it points to external documentation, leaving the agent unable to construct a correct call confidently.

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 carries the full burden for the single calendar_date parameter. It names the parameter conceptually but never specifies the format (e.g., YYYY-MM-DD), timezone handling, or what date restrictions apply beyond a vague reference to the official API.

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 English sentence states a specific verb and resource ('Return menstrual-cycle summary data') scoped to a calendar date, so the agent knows what it retrieves. It does not differentiate from the sibling get_menstrual_cycle_day_view, leaving the summary-vs-day-view distinction ambiguous.

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 only guidance is '参数和日期限制沿用官方接口' (parameters and date restrictions follow the official interface), which defers to undocumented external behavior rather than telling the agent when to call this tool. Nothing explains when to prefer it over get_menstrual_cycle_day_view or what date ranges are valid.

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