analytics_period_daily

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

Annotations already declare readOnlyHint=true and openWorldHint=true. The description adds that it returns 'day-by-day totals' but does not elaborate on return format or pagination. No contradictions, but limited additional value beyond annotations.

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 concise and well-structured: purpose first, then prerequisite, then usage, then trigger words. Every sentence adds value with no redundancy.

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?

While the description covers prerequisite and usage context, it fails to explain the optional parameters (paymentMethod, account) and does not describe the output format. Given the 3 required/optional params and no output schema, the description should provide more completeness.

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 0%. The description does not explain the meaning or expected format of the three parameters (period, paymentMethod, account), leaving the agent to guess. The only hint is 'statement period' in the purpose, but no parameter-level detail.

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 'Get daily totals for a statement period,' providing a specific verb and resource. The trigger words ('daily totals, by day, day-by-day, timeline') help distinguish from sibling tools like analytics_period_overview or analytics_range_daily.

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?

Explicitly instructs to call analytics_periods_list first to verify the period exists, and advises asking the user if missing. The 'When to use' section specifies the exact scenario. However, it does not mention alternative tools by name for other use cases.

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