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

Annotations already cover the read-only/open-world safety profile, and the description adds genuinely non-structured context: role-based permission failures ('fails with a permission error or returns no rows') and the API-key access requirement. This is useful behavioral detail beyond the 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?

Front-loaded with the core purpose and examples, and each sentence carries useful info. Minor redundancy: 'return its rows' is stated twice, which could be trimmed without loss.

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?

With no output schema, the description does supply the return shape ('returns its rows as JSON') and caveats about optional date ranges and permission errors. It could say more about row structure, but it is complete enough for correct invocation.

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 100%, so the schema already documents from/to/report/employee_id with formats and examples. The description only broadly echoes that date ranges are sometimes optional, adding little beyond what the schema provides, so the baseline 3 applies.

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?

States a specific verb (Run) and resource (built-in report) and names concrete examples like 'Sales by Day of the Week' and 'Employee Performance Report'. An agent can immediately tell this is the DaySmart reporting tool rather than one of the many list_*/get_* siblings.

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?

Gives implied usage via 'Runs a report from More, then Reports' and notes that most reports take a date range while a few have none. However, it never states when to prefer this over sibling tools such as daysmart_list_appointments, nor any explicit exclusions, leaving context to inference.

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